High-yield cultivation methods for summer cucumber

The harvest period of summer cucumber coincides with the off season of vegetables, the price of fresh melons is stable, and the economic benefits are good. In addition, due to the high temperature in the summer, the sunshine is longer, the light is stronger, and heavy rain and showers are common. The female flower and the growing number of nodes, the number of female flowers and the number of diseases and insect pests are often problems. In order to cultivate good cucumbers in summer and achieve high yields and yields, the following points should be noted in cultivation: First, select good varieties to select varieties suitable for summer heat resistance, moisture resistance and disease resistance: such as Xia Qing No. 4 and Jin Green No. 4 , Jin Za 4th, Jinchun 5, Jinyou 40, etc. Second, nursery seedlings Transplanting summer cucumber breeding period, due to heavy rain and showers more, should not be live, should choose a well-drained field nursery transplants, shade net can be used to prevent high temperature rainstorm seedlings. The seed dressing is sterilized and then soaked with fresh water for 8-10 hours, picked up and drained for sowing. Seeding methods are commonly used plastic nutrient cups and nursery tray seedlings, nutrient soil should use new soil or vegetable garden soil not planted melons, sowing seeds per seed sowing. Seedlings of 2 true leaves gradually go to the net to increase the light hardening seedlings. Third, the selection site preparation cucumber should be selected in the former is not a melon, but the ground is flat, convenient irrigation and drainage, soil loose, high organic matter content, strong water retention and fertility of the neutral slightly acidic soil cultivation. The planting method used for the planting was a 1 meter wide, a 0.4 meter high and a 0.3 meter wide groove. Combined application of basal fertilizer when plowing, Mushi potassium sulfate compound fertilizer 20 kg, 30 kg of superphosphate, 1500 kg of organic fertilizer. Before the fertilization, the superphosphate is mixed into the organic fertilizer and piled for 2-3 days, so that the superphosphate effect can be improved. 4. Transplanting seedlings and planting When the seedlings grow to 3-4 true leaves, the transplanting will be carried out using double-row planting methods. The planting specifications (rows and spacings) are 0.6 m and 0.3 m, and about 3500 plants per mu are appropriate. Fifth, field management 1, the introduction of vine pruning When the plants began to pump vines, grow tendrils, plant height of 0.3-0.4 meters, should take the scaffold and lead vines. The bracket can be used "human" type bracket, with the center of the skull as the center frame, the top of the bracket above the surface of the skull. The introduction of vines should be carried out in the sunny afternoon. When vines are introduced, the vines should be distributed evenly and the vines should be introduced every 3-4 days. The introduction of vines combined with pruning, early removal of the main mango vine vines grow 1-6, after 6 vines left a leaf melon picking heart, wait until the main ranch after racking topping, the side vines will follow its natural growth. Timely removal of yellow leaves from the lower part of the plant 2. Management of fertilizer and water (1) Reasonable top-dressing: Cucumbers are hi-fertilizers, which have the characteristics of weak absorption of fertilizers at the seedling stage and large amounts of fertilizers in the middle and late stages of growth. Therefore, topdressing should be performed from lean to heavy. After 3-4 days of transplanting, 8%-10% of light urine water is applied before tendrils appear, and once every 3-4 days, the application rate is about 1200 kilograms; the tendrils appear to flowering and urine water concentration can be increased to 20%. , Flowering results can be increased to 30% concentration, spraying once every 4-5 days, Mushi 1500 kg. At the same time, because the cucumber needs more nitrogen and potassium in the result period, after the first time the melon is harvested, it is necessary to top-dress again and apply 20 kg of potassium sulfate compound fertilizer. After entering the harvest period, the ditch is opened in the middle of the loquat, and 15 kg of potassium sulfate compound fertilizer is applied in the mu and the soil is applied after the application. At the same time, extra-root fertilizer was also applied: seedlings were sprayed with 150-200ppm ethephon at the 3-leaf and 6-leaf stages to increase the number of female flowers and increase the yield. The combined spraying of the seedlings was followed by extra-root dressing, such as the spraying of potassium dihydrogen sulfate. Magnesium sulfate, boron and other trace elements or 1% urea solution to promote the growth of cucumber. If the plants are robust and grow vigorously, the amount of topdressing should be appropriately reduced. If the plant growth is weak, the amount of fertilizer and fertilizer should be increased. (2) Water Management: During the summer cucumber seedling stage, due to heavy rainfall, air humidity and soil moisture are large, it is generally not possible to pour water; in case of high temperature, the water temperature should be lowered to compensate for the loss of water due to transpiration. . With the growth of plant stems and leaves from weak to prosperous, especially in the fruiting period, it is necessary to meet the needs of stem and leaf growth and transpiration, but also to ensure that the flowering results of the water demand, so the sunny or dry place should be maintained during the day half ditch Water, night drainage, watering in the evening, spraying water in the morning or evening if necessary, to reduce the temperature and increase the number of female flowers. Sixth, pest control 1, disease prevention damping-down disease: with 70% of the enemy 300 times solution of dexamethasone, 75% chlorothalonil 800 times or 70% thiophanate-methyl spray 800 times; blight: 70 %Dikeson 800 times solution or 20% Rickets 800 times solution for spraying control; Downy mildew: 58% of fungal strain 600 times, 72% of gel 750 times or 70% of thiophanate methyl 800 times Spraying control; Powdery mildew: spraying with 20% triadimefon 2000 times, 10% Shigao 2000-3000 times or 75% chlorothalonil 700 times; keratoses: 200ppm agricultural streptomycin, 72% 600 times the liquid can be sprayed to prevent and cure; Blight: use 58% of diarrhea mildew 600 times, 75% chlorothalonil 600 times spray control or 70% of enemy pine 1000 times Irrigation root. 2. Insect Pest Control Gualou: Control with 1.8% afordin 3000 times, 2.5% Uranus 3000 times or 25% plutonium 15000 times; Gualou: 50% Culong 800x, 50 % Control of spraying 1000 times liquid of Pinus sylvestris or spraying of Bacillus thuringiensis etc.; Bactrocera cucurbitae: Spraying with 48% of L. subtilis 1000 times, 90% of trichlorfon 1000 times or 80% of dichlorvos 1000 times. Seven, timely harvesting cucumbers can be harvested 8-10 days after flowering. If the water and fertilizer are sufficient, the harvest will be more diligent and the yield will be higher. Generally, it is required to harvest every day. Harvesting should be carried out before 8 o'clock in the morning. Harvesting in the afternoon will not only make bitterness of the fruits and affect the quality, but also the melons will be too hot for storage and transportation.

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