Rape waterlogging prevention and control technical measures
2021-04-18 03:19:32
Waterlogging is also called "wet damage." Sustained rainfall will cause water accumulation, especially for rape and rape crops, which is more serious. According to the characteristics of rape flooding, the following technical measures for prevention and control of rape damage were put forward.
1. The main ditch and the gutter were dug in the dredging site and the gully system was improved. The main and branch ditch were unblocked. After the rainy weather is over, it is necessary to conduct timely drainage and drainage, so that the main channel, the gutter, and the gutter channel can communicate with each other, and the drainage can be unobstructed, so that the rain can be kept dry and the humidity in the field can be reduced. After the weather turns fine, we must timely carry out cultivating loose soil, control weeds, improve soil ventilation, and promote root development.
2. Applying effective fertilizer fertilizers will result in the loss of nutrients in the soil, and the roots will lose their nutrient absorption capacity. At this time, 4 to 6 kg of urea should be applied per acre according to seedling growth to promote pre-winter growth. On the basis of topdressing nitrogenous fertilizers, appropriate additional phosphorus and potassium fertilizers should be applied to increase plant resistance, and potassium chloride (3 to 4 kg per mu) or 0.2% potassium dihydrogen phosphate (2% to 3%) can be sprayed on the roots. Superphosphate solution 50 kg. In addition, the application of a boron fertilizer after budding, that is, with 0.1% to 0.2% boron fertilizer solution 50 kilograms of foliar spray to prevent "flowers but not real."
3. The roots of the roots are cut to prevent the underground part of the rape from being damaged by the development of the waterlogging, and in the middle and late period, the head and the foot may be expressed. Therefore, after the spring, the roots should be protected around the leaves to protect the roots of the cultivated soil and the soil. For the plots with prosperous tendencies in the spring, the growth regulator should be sprayed in time for the flood season. Generally, 15% paclobutrazol (50 mg) plus 50 kg of water per acre should be uniformly sprayed in order to improve plant shape and enhance lodging resistance.
4. Prevention of secondary disasters. Should pay attention to prevent the occurrence of secondary diseases, in the occurrence of waterlogged fields, in the low-temperature and high-humidity conditions susceptible to mildew mildew, high temperature and humidity conditions prone to Sclerotinia, and clubroot disease occurred. In this regard, we must promptly remove the yellow and old diseased leaves at the bottom of the plant in order to reduce the bacterial source of S. sclerotiorum; choose to spray 2-3 times of carbendazim, or eradication of disease, or thiophanate, or mancozebite. prevention. For fields where cabbage caterpillars are infested, avermectin emulsifiable concentrate or monthricin ester emulsifiable concentrate can be used as an alternative spray, and pyrethroid insecticides are also available for control. Locust-damaged fields can be treated with a dimethoate emulsion, imidacloprid wettable powder, or imidacloprid EC.
One of the climate features in the middle and lower reaches of the Yangtze River is that there is a lot of rain in the spring. Therefore, it is necessary to clear the trenches in time before the arrival of the rainy season after the beginning of spring to prevent post-rain damage. If the depth of the drainage ditch is not enough or unobstructed, deepen the rationality in time. At the same time, the combination of humic ash or decomposed compost and manure should be used in combination with cultivator to increase the ground temperature and enhance the ventilation and water permeability of the soil. For heavy soils with heavy soil moisture, appropriate amount of plant ash should be applied to the car.
1. The main ditch and the gutter were dug in the dredging site and the gully system was improved. The main and branch ditch were unblocked. After the rainy weather is over, it is necessary to conduct timely drainage and drainage, so that the main channel, the gutter, and the gutter channel can communicate with each other, and the drainage can be unobstructed, so that the rain can be kept dry and the humidity in the field can be reduced. After the weather turns fine, we must timely carry out cultivating loose soil, control weeds, improve soil ventilation, and promote root development.
2. Applying effective fertilizer fertilizers will result in the loss of nutrients in the soil, and the roots will lose their nutrient absorption capacity. At this time, 4 to 6 kg of urea should be applied per acre according to seedling growth to promote pre-winter growth. On the basis of topdressing nitrogenous fertilizers, appropriate additional phosphorus and potassium fertilizers should be applied to increase plant resistance, and potassium chloride (3 to 4 kg per mu) or 0.2% potassium dihydrogen phosphate (2% to 3%) can be sprayed on the roots. Superphosphate solution 50 kg. In addition, the application of a boron fertilizer after budding, that is, with 0.1% to 0.2% boron fertilizer solution 50 kilograms of foliar spray to prevent "flowers but not real."
3. The roots of the roots are cut to prevent the underground part of the rape from being damaged by the development of the waterlogging, and in the middle and late period, the head and the foot may be expressed. Therefore, after the spring, the roots should be protected around the leaves to protect the roots of the cultivated soil and the soil. For the plots with prosperous tendencies in the spring, the growth regulator should be sprayed in time for the flood season. Generally, 15% paclobutrazol (50 mg) plus 50 kg of water per acre should be uniformly sprayed in order to improve plant shape and enhance lodging resistance.
4. Prevention of secondary disasters. Should pay attention to prevent the occurrence of secondary diseases, in the occurrence of waterlogged fields, in the low-temperature and high-humidity conditions susceptible to mildew mildew, high temperature and humidity conditions prone to Sclerotinia, and clubroot disease occurred. In this regard, we must promptly remove the yellow and old diseased leaves at the bottom of the plant in order to reduce the bacterial source of S. sclerotiorum; choose to spray 2-3 times of carbendazim, or eradication of disease, or thiophanate, or mancozebite. prevention. For fields where cabbage caterpillars are infested, avermectin emulsifiable concentrate or monthricin ester emulsifiable concentrate can be used as an alternative spray, and pyrethroid insecticides are also available for control. Locust-damaged fields can be treated with a dimethoate emulsion, imidacloprid wettable powder, or imidacloprid EC.
One of the climate features in the middle and lower reaches of the Yangtze River is that there is a lot of rain in the spring. Therefore, it is necessary to clear the trenches in time before the arrival of the rainy season after the beginning of spring to prevent post-rain damage. If the depth of the drainage ditch is not enough or unobstructed, deepen the rationality in time. At the same time, the combination of humic ash or decomposed compost and manure should be used in combination with cultivator to increase the ground temperature and enhance the ventilation and water permeability of the soil. For heavy soils with heavy soil moisture, appropriate amount of plant ash should be applied to the car.
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