First, seed treatment to increase the germination rate.
Select seeds full of seeds for drying, in order to increase the seed growth potential. When sowing with ammonium molybdate O. 1% ~ 0.2% or rhizobia (0.5 kg bacteria mixed lO kg seeds) seed dressing. According to the test, the treated seed nodules formed early and many, rapid growth, early branches, seed setting rate and sorghum increased, and the yield increased by 15% to 25%.
Second, fine soil preparation, adequate base fertilizer.
Deep plowing 20 to 25 centimeters, and crushed repeatedly from the turtle back ridge ridge 1.2 meters (paddy field), dry sloping land can be wider, to prevent the accumulation of water rot. In the early stage, especially the three-leaf stage, potassium and phosphorus are particularly needed. Therefore, 1500 kg of soil-fertilizer, 600 kg of fire-soil ash or vegetation ash, 10 kg of phosphate fertilizer and 20 kg of compound fertilizer should be applied to Mushi. Mix well and make the base fertilizer, and then plant the hole. Line spacing 16 to 48 cm, spacing 12-14 cm. Each seed sowed 1 to 2 tablets, the number of plants per acre reached 2.88 ~ 30,000.
Third, use autumn seed to ensure a full seedling.
When it is sown in spring, it often encounters low temperature and rainy weather, resulting in bad seeds and affecting the whole seedlings. The use of high quality seedlings with good germination rate, strong growth potential, ability to preserve seedlings, and early maturation is the key to winning stable production and high yields. Suitable varieties for cultivation in paddy field are Yuedong No.1 and Yuedou No.2; good varieties suitable for planting in red soil hills include early yellow, big yellow yellow and Guangdong bean No.1. The above-mentioned improved varieties have compact, dwarf, drought-tolerant and wet characteristics. Soybeans are more resistant to hypothermia, generally stable in the temperature of IO "C (spring to rain) for the best sowing time, at this time is conducive to promoting more branches, easy to win high yield.
Fourth, early cultivator and early fertilizer. Promote flower growth and prevent back down and increase production.
l. Soybeans are hi-tillage crops, and their seedlings grow slowly and prone to weeds. When the seedling height is 15 to 20 cm, cultivating and weeding should be carried out in order to promote the development of rhizobia, and to prevent lodging on the cotyledon nodes. In the cultivating time, 60-60 kilograms of lime powder are used per mu, which can increase the ability to prevent pests and insects, resist lodging, and increase grain weight.
2. Apply 5 kg of urea and 7 kg of potassium chloride per mu in the beginning of the branching period, combined with the second cultivator, to increase the effective confinement rate.
3, in the closure of the line to promote dwarfism, acres of paclobutrazol 0.7 grams of water 25 kg, can promote dwarfing and increase the number of knots per plant.
4. During the flowering stage, spraying plant phytoalexin and potassium dihydrogen phosphate l 2 times, the seed setting rate can be increased by more than 20%.
V. Qiao spray inhibitors, topping the heart and increase production
Sodium sulfite 4 to 5 grams at the flowering time, 50 kg water, spray once a week, even spray 2 to 3 times, can increase the photorespiration intensity of soybean, reduce the consumption of photosynthesis products, increase dry matter accumulation and production of 8% to 10% %; Topping the heart and removing the top heart in the 20 days before harvest can increase the seed-setting rate by 8% to 10%.
Six, prevention and control of pests and diseases. Sleptiferous protection and conservation benefits.
Soybeans have locusts, ground tigers, and carnivores in the early stage, bean pods, ladybugs, and leaf spot diseases in the middle stage. They harm the spikes of young leaves and eat the pods, and should use the corresponding pesticides in a timely manner.
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