The use of greenhouses for cowpea cultivation after the fall, the average yield of about 3000 kilograms of kidney beans, per mu yield up to 10,000 yuan. Soil preparation before ridge crops After the crop is harvested, the soil is deep-spilled 30 cm, with 2500 kg of fertilizer applied per mu, 25 kg of 45% compound fertilizer, and 40 kg of ammonium bicarbonate. The soil is mixed with shallow soil. After the formation of ridge, ridge width 60 cm, height 16 to 18 cm, groove width 60 to 70 cm. Appropriate sowing time selection of heat resistant cowpea varieties. Seeding at the beginning of August. Before sowing, soak in 15 minutes with 55°C warm water plus 0.1% potassium permanganate, soak for 4 to 5 hours with clean water, and soak. Each ridge is planted in two rows, with a distance of 28 cm, 3 to 4 seeds per hole, and a depth of 3 to 4 cm. After pouring soda, ensure that the whole seedling is broadcast. Fertilizer and water management Three seedlings per hole were kept after seedlings were sprayed, and water was poured one time after 10 days to promote seedling growth. Timely cultivating loose soil to promote root growth. When the pods are 3 to 5 cm long, they should be poured every 7 to 10 days to keep the soil moist. Combined with the first watering, 15 kg per gram of urea and 10 kg of potassium chloride are applied. From the beginning of the flood season, watering and fertilization are carried out alternately. Generally, fertilization is carried out twice. The first application of ammonium bicarbonate is 20 kg per acre, and the second application of urea is 10 kg per acre. Temperature control In early September to early October, shade nets and insect nets are stamped. When the temperature drops to 15°C at night, the film is snagged, and the film is generally fastened around October 10th. After the shed, the temperature in the shed during the day is kept at about 25°C, and the temperature at night is kept at about 20°C. When the plant adjusts the plant to extend the vine, it is inserted into the "person" shaped frame to bind the vine. The lateral vines below the first inflorescence of the main vine should be promptly removed to promote the thickening of the main vine and the early lateral scab. Central side branches need to be picked up. The main vine spreads when it is 18 to 20 knots. Timely harvesting is generally harvested 60 to 65 days after sowing, and harvesting takes place at intervals of 2 to 3 days in the early stages of harvesting. Harvesting takes place once a day during the harvest season and the harvest period is approximately 50 days.
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