Fresh soy spring sowing cultivation management skills
First, characteristics Soybean sexual warmth, seeds began to germinate at 10-12 °C, optimum temperature 15-20 °C, optimum temperature for growth 20-25 °C, optimum temperature of flowering and seedling stage of 20-28 °C, delayed freezing at low temperature, less than 14 °C can't flower, if the temperature is too high, the plant will end prematurely. Seed germination requires more water, and the flowering period requires soil moisture to be 70-80%, otherwise the rate of flower bud loss increases. Soybeans absorbed less than 15% of the total amount before flowering, while flowering and podling accounted for more than 80% of the total amount of sown fertilizer. Second, cultivation points 1. Soil selection. Soybean roots are well developed, and soils with deep soil layers, irrigation and drainage conditions, and medium fertility should be selected. 2, timely sowing. It is cultivated in a small shed, usually in early February, with a seedling age of about 25 days. It is planted in a small arch shed in early March and harvested in early May. It is planted in the middle and late March in the mulching film in open field, harvested in mid-June, and harvested in April. It can be broadcast live in mid-half, with 2-3 capsules per hole. 3, rational close planting. A small row of narrow rows of planting methods, with a width of 80 cm wide, double row acupuncture at a distance of 40 cm, 20 cm around the hole, cover soil should not be too thick. Otherwise it is easy to rotten species, not easy to emerge. 4, scientific fertilization. Basal superphosphate 150-200 kg per mu. In the first week after the emergence of the first fertilizer, Mushi 30 kg of ammonium bicarbonate, 30 kg of superphosphate, mixed evenly, each with three pounds of water in the middle of pouring water; after a week after the second fertilizer, mu Ammonium bicarbonate 40-50 pounds, superphosphate 30 pounds, mixed evenly, each replenishment with 4-5 pounds of plutonium poured in the middle; about 30 days of seedling (initial flowering period) mus urea 10-15 pounds, 30 pounds compound fertilizer Evenly spread applicator. Later, see the seedlings make up the fertilizer, after each fertilization should be filled with a half ditch. 5, field management. The first cultivating was carried out after the emergence of two compound leaves to promote root growth, and the second cultivating was carried out in the later stage of the gangue combined with the Qinggou soil. At the beginning of the flood season, we must pay attention to the prevention of damage to voles, and we should eliminate the accumulation of stagnant water in the field to prevent rot and ensure high yields. 6, pest control. To prevent underground pests, it is better to use phoxim granules for boring.
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