"Three-suitable, two-defining, and five-position" soybean high-yield and high-efficiency planting method

Soybeans are widely grown in our county as economic crops. In recent years, through technical personnel's practical exploration and large-scale demonstration, new varieties of soybeans suitable for high yield in Yutian County have been screened out and high yields of “Three Adaptations, Two Sets, and Five Places” have been selected. Efficient planting method. The soybean used in this method has an average yield of 350kg or more for three consecutive years since 2001, which is 30% to 50% more than traditional methods. (A) Three suitable 1. Suitable varieties. That is, the varieties with drought-resistant, anti-cariogenic, disease-resistant, heavy-tolerant, water-resistant and water-increase potentials, such as Zhonghuang No.4, Tiefeng No.29, and Yuxuan Soybean No.1, were selected. In particular, the selection of soybean king No. 1 soybean, spring planting 1.65 ~ 1.80m, summer sowing 1.50m; growth period, spring sowing 110 ~ 120 days, summer broadcast 95 ~ 100 days; average yield of spring sowing 350 ~ 450kg, summer broadcast 250 ~ 300kg. 2. Suitable plots. That is, it is appropriate to choose a soil with deep soil, loose and fertile soil, and convenient drainage and irrigation. 3. Appropriate sowing date: spring sowing in 10cm ground temperature stable above 10 °C, you can sow; summer sowing immediately after the wheat harvest, delay affect the maturity. (b) two set 1. According to the method of scheduling fat. Mushi farmyard fertilizer before broadcast 1500 ~ 3000kg. Fertilization method: When sowing is the best seed fertilizer isolation, Mushi N, P and K each containing 15% of compound fertilizer 30kg (or 20kg of diammonium phosphate, potassium chloride 15kg); if the seed fertilizer is not isolated, N, P, K Contains 15% of compound fertilizer 10kg. Fertilizing time: Early flowering urea topdressing 5 ~ 7kg, 10-15 days after flowering spraying foliar fertilizer. 2. Look at the growing trend of Dingmiao. General soybeans start to be seedling when they are in two true leaves. The growth potential is strong, good looks are left, diseased seedlings, weak seedlings, deformed seedlings are unplugged, and seedlings are cut off, so they must be replanted in time to ensure sufficient density and reasonableness. The number of groups. (c) Five places 1. Broadcast density is in place. The average amount of seed per acre 4 ~ 5kg, sowing depth of 2 ~ 3cm. Row spacing: Spring planting distance 60cm, plant spacing 5cm, density 22000 or so; Summer sowing: row spacing 50cm, plant spacing 5cm, density 26000 or so. 2. The watering method is in place. After fertilizing or cultivating earth, water should be poured and small water should be flooded. Throughout the flowering and wetting period, we should keep the soil moist and avoid flooding with water to prevent soil compaction and root rot and rot. 3. Pharmacy grows in place. The use of ammonium molybdate seed dressing, the amount of seeds per kilogram 2 ~ 4g, improve the emergence rate and enhance plant resistance. The initial flowering period of 8 mu for swollen expanses and spraying of 20 kg of water on the foliar surface can make the root system develop well and grow steadily. The flower bud falling rate is reduced by 20% to 30%. Full-flood mu foliar sprayed with sodium bisulfite 4 ~ 6g, reduce the consumption of photosynthetic products, promote root growth, increase the number of rhizobia. The spraying of three iodobenzoic acid 3 to 5 g per acre leaves can increase the number of flower buds by 25% to 40%, reduce the rate of abscission of flower buds by 7%, increase the scab rate by 20%, and mature 5 to 7 days. 4. Weeding and weeding are in place. When the height of the seedlings is 10 to 15 cm, a shallow medium tillage is used to remove the grass, loosen the soil to ensure soil moisture, promote the root seedlings, prevent leggy and prematurely seal the ridges. Before emergence, use 12.5% ​​Gaixengeng Emulsion or 10% quizalofop Emulsion, 75 ~ 100ml per mu, 40 ~ 50kg of water, spray the field to kill the grass weeds. 5. Controlled in place. The initial flowering period uses 15% paclobutrazol wettable powder 50 to 100 g per mu, spraying 50 kg of water on the foliage, dwarfing the plants, shortening the internodes, increasing the stem diameter, preventing lodging and falling flowers, and increasing the scab rate and grain weight.

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