Chinese cabbage high-yielding cultivation techniques

First, prepare before broadcast

1. Variety selection Select disease resistant varieties and high ridge cultivation. The currently well-tolerated varieties include Beijing New No. 3, Fengkang 80, and Taiyuan Erqing.

2. For scientific fertilizers, the nitrogen requirement is greatest in the growth of Chinese cabbage, followed by potassium, and the least in phosphorus. The absorption ratio of the three elements is about 4:1:3. The basic rules for nutrient absorption are: Before the rosette stage, Nitrogen dominates, followed by potassium, and potassium dominates during the ball stage, supplemented by nitrogen, so base fertilizer must be applied. Before choosing the plot, the plots of cruciferous vegetables were not planted, and 5000 to 6000 kg of farmyard manure was used in combination with Mushi, and 10 kg of ammonium phosphate was used to make foot mites, which could improve the disease resistance of the plants.

3, sowing 1 chemical seed dressing, seed disinfection can effectively prevent soft rot, black rot. Soft rot: Seeds soaked with 3% potassium permanganate before sowing. The seeds were soaked in cold water for 1 hour, and soaked in the liquid for 30 minutes. The water was rinsed, germination was sowed, or Zhuangfengling was used for seed dressing of 50 grams per mu. Black rot: can be soaked in warm water at 50°C for 20-30 minutes or streptomycin 1000 times for 2 hours, and sown after drying. 2 sowing date: generally 3 to 5 days after the beginning of autumn. Generally, seeds are sown from sowing to sprouting for 24 hours, so they should be sown in the afternoon so that the seedlings can be unearthed in the early evening of the third day after sowing. After a night's growth, they can tolerate a stronger sun.

Second, field management

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

1. Variety selection Select disease resistant varieties and high ridge cultivation. The currently well-tolerated varieties include Beijing New No. 3, Fengkang 80, and Taiyuan Erqing.

2. For scientific fertilizers, the nitrogen requirement is greatest in the growth of Chinese cabbage, followed by potassium, and the least in phosphorus. The absorption ratio of the three elements is about 4:1:3. The basic rules for nutrient absorption are: Before the rosette stage, Nitrogen dominates, followed by potassium, and potassium dominates during the ball stage, supplemented by nitrogen, so base fertilizer must be applied. Before choosing the plot, the plots of cruciferous vegetables were not planted, and 5000 to 6000 kg of farmyard manure was used in combination with Mushi, and 10 kg of ammonium phosphate was used to make foot mites, which could improve the disease resistance of the plants.

3, sowing 1 chemical seed dressing, seed disinfection can effectively prevent soft rot, black rot. Soft rot: Seeds soaked with 3% potassium permanganate before sowing. The seeds were soaked in cold water for 1 hour, and soaked in the liquid for 30 minutes. The water was rinsed, germination was sowed, or Zhuangfengling was used for seed dressing of 50 grams per mu. Black rot: can be soaked in warm water at 50°C for 20-30 minutes or streptomycin 1000 times for 2 hours, and sown after drying. 2 sowing date: generally 3 to 5 days after the beginning of autumn. Generally, seeds are sown from sowing to sprouting for 24 hours, so they should be sown in the afternoon so that the seedlings can be unearthed in the early evening of the third day after sowing. After a night's growth, they can tolerate a stronger sun.

Second, field management

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

2. For scientific fertilizers, the nitrogen requirement is greatest in the growth of Chinese cabbage, followed by potassium, and the least in phosphorus. The absorption ratio of the three elements is about 4:1:3. The basic rules for nutrient absorption are: Before the rosette stage, Nitrogen dominates, followed by potassium, and potassium dominates during the ball stage, supplemented by nitrogen, so base fertilizer must be applied. Before choosing the plot, the plots of cruciferous vegetables were not planted, and 5000 to 6000 kg of farmyard manure was used in combination with Mushi, and 10 kg of ammonium phosphate was used to make foot mites, which could improve the disease resistance of the plants.

3, sowing 1 chemical seed dressing, seed disinfection can effectively prevent soft rot, black rot. Soft rot: Seeds soaked with 3% potassium permanganate before sowing. The seeds were soaked in cold water for 1 hour, and soaked in the liquid for 30 minutes. The water was rinsed, germination was sowed, or Zhuangfengling was used for seed dressing of 50 grams per mu. Black rot: can be soaked in warm water at 50°C for 20-30 minutes or streptomycin 1000 times for 2 hours, and sown after drying. 2 sowing date: generally 3 to 5 days after the beginning of autumn. Generally, seeds are sown from sowing to sprouting for 24 hours, so they should be sown in the afternoon so that the seedlings can be unearthed in the early evening of the third day after sowing. After a night's growth, they can tolerate a stronger sun.

Second, field management

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

3, sowing 1 chemical seed dressing, seed disinfection can effectively prevent soft rot, black rot. Soft rot: Seeds soaked with 3% potassium permanganate before sowing. The seeds were soaked in cold water for 1 hour, and soaked in the liquid for 30 minutes. The water was rinsed, germination was sowed, or Zhuangfengling was used for seed dressing of 50 grams per mu. Black rot: can be soaked in warm water at 50°C for 20-30 minutes or streptomycin 1000 times for 2 hours, and sown after drying. 2 sowing date: generally 3 to 5 days after the beginning of autumn. Generally, seeds are sown from sowing to sprouting for 24 hours, so they should be sown in the afternoon so that the seedlings can be unearthed in the early evening of the third day after sowing. After a night's growth, they can tolerate a stronger sun.

Second, field management

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

Second, field management

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

1. Spleen seedlings, supplementary seedlings, timely seedlings from the seed germination to Dingmiao, the general seedling age is about 18 days, during which multiple seedlings should be carried out. The seedlings were unearthed for 3 days and the first seedlings were planted so that there was a gap between the seedlings. When 4 to 5 leaves were used, the second time the seedlings were left, leaving 2 to 3 plants per hole. According to the strength of the seedlings, leaving strength to weak, when the leaves grow to 8 to 9 leaves, according to the spacing of about 50 cm from the planting Dingmiao. The timing of seedlings should be controlled at high temperatures in the noon. Due to the different ability to adapt to the environment, some weak seedlings and diseased seedlings show their morbidity and are easier to identify and eliminate. If there is a shortage of seedlings, it should be replanted promptly.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

2. Cultivated weeding and thinning are carried out in the middle of Dingmiao and Rosette respectively. According to the principle of “Shallow, double, deep, and triple without damaging roots”, the cultivation of high ridges should follow the principle of “deep ditch and shallow ditch”. , Combined with cultivator turfgrass soil, such as Rosette late growth, can be seedlings.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

3, watering topdressing fertilizer, such as the amount of base fertilizer can be used to recover a fertilizer in the seedling period. Mushi urea 10 kg. In the rosette period, the ball beginning and middle period, each chase a fertilizer, Mushi urea 15 ~ 20 kg, combined with spray foliar fertilizer potassium dihydrogen phosphate and urea mixture once every 10 days. Watering should be carried out in conjunction with topdressing. The soil in the early stage of the ball is dry and wet, and the soil is moist during the ball stage. Stop watering until 10-15 days before harvest to facilitate storage.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

4. Ten days before the harvest, the outer leaves shall be raised and wrapped with wheat straw or straw to prevent the frost damage or mechanical damage before harvest. Late-maturing varieties extend the growing period as much as possible, but must be harvested before frost.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

Third, pest and disease control

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

1. Earthworms, earthworms, and soil pests should be spread evenly on the ground with 2.5% methyl isophorus powder, or be made of 50% methamidophos with wheat bran and cottonseed cake. When sowing in the afternoon, they should be sprinkled on the surface. .

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

2. Downy mildew can be controlled by spraying 75% chlorothalonil 500 times solution or 60% fluomodin zinc 500 times solution, spraying agricultural streptomycin, or using 70% of dexamethasone to water the diseased plants and the surrounding plant roots to prevent soft rot. disease. Timely control of aphids can reduce viral transmission vectors. Antivirus disease uses 3% force to kill the enemy spray, and it can be sprayed with 1.5% of Shiyiling II or virus A800-1000 times in the initial stage of disease.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

3, cabbage caterpillar, diamondback moth can be used pyrethroid or avermectin EC 3000 times spray control.

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