Summer tomato double cover cultivation

Summer tomatoes are listed during the September-October shortfall, with high prices and good returns. Such as the use of film, shade net double covering cultivation techniques, can eliminate the problems of high temperature and rain, the loss of fruit during the growth of tomatoes, improve the yield and quality. 1. To cultivate disease-free strong seedlings, use high temperature resistant, aphid-free, antiviral hair powder 802. Seedlings in late May. Before sowing, soaking with 1% potassium permanganate solution for 15 minutes, soaking with fresh water for 3-4 hours, washing the seeds, drying the surface moisture and sowing. Add 50% carbendazim powder 5 grams per square meter cap soil, cover soil thickness 0.5 cm. After sowing straw cover insulation, arch cover film (two ventilation) and shade net rain cooling. Remove the straw after emergence. Cover the shade net before and after noon on sunny days. From the vomiting period to the sub-seedling stage, the seedbeds are sprinkled with soil for 2 times of sealing, the seedlings at the 3rd leaf stage, the 6 leaf stage for planting, and the seedling age is about 40 days. 2, high ridge planting membrane double-covered Daejeon per acre Shiren farmyard fertilizer 4000 kg, 50 kg of cooked cake fertilizer, compound fertilizer 50 kg. 80cm after the preparation of the saddle-shaped high ridge, according to a large row of 70 cm, 40 cm row spacing planting, spacing 27 cm, acres planted 4500 or so. Planting water by pouring enough water and planting fresh wheat straw in large rows after planting. Then a large scaffolding was erected and a 0.6 mm thick film was placed on the frame to prevent rain. The sides were covered to 40 cm from the ground for ventilation. 3. Strengthen the management of field management After 3-4 days of planting, irrigate water once. Using single stem pruning, the base part of the branch length to 10 cm when removed, in order to promote root growth, the subsequent branch removal as soon as possible. Timely trussed vines. In summer, the temperature is high, flowers are less, and it is not easy to set fruit. When the flower is half open, use 20-30ppm Tomato Spirit to promote fruit setting. Leave 3 ear fruit per plant, leave 3-4 fruit per ear, and leave 2-3 leaves topping in the third ear fruit. Each ear began to expand when combined with water per acre topdressing urea 10-15 kg, potassium dihydrogen phosphate 2-3 kg. Water is usually poured 8-10 days. In the middle and late period, spray 3-4 times of 0.3%-0.5% potassium dihydrogen phosphate solution or spraying foliar fertilizer to prevent premature aging.

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