In view of the problem that the amount of organic fertilizer applied in the current soybean fertilization is small, the rhizobial agent is not inoculated, and the nutrients of the medium and trace elements such as calcium, magnesium, magnesium, sulphide and molybdenum are neglected, the following scientific fertilization method is adopted: the organic fertilizer is re-applied, and the soybean rhizobium is inoculated; Targeted application of trace element fertilizers to soils lacking medium and trace elements; 100% organic and phosphate fertilizers and 50% of nitrogen and potassium fertilizers are applied to the base fertilizer before transplanting, and the fertilizer is poured into the soil after application. The soil and fertilizer are mixed; 30% of the nitrogen and potassium fertilizers are applied as seedlings; 20% of the nitrogen and potassium fertilizers are applied as pre-flower fertilizers, and when the topdressing is applied, the fertilization ditch with a depth of 15-20 cm is firstly dug between the two rows of soybeans, and then Fertilizing the soil.
First, the amount of organic fertilizer application: about 2000 kg per mu.
Second, the application rate of nitrogen, phosphorus and potassium: the yield level per mu is less than 150 kg, 8 kg of nitrogen fertilizer, 4 kg of phosphate fertilizer and 5 kg of potassium fertilizer; the yield level per mu is 150-200 kg, 7 kg of nitrogen fertilizer per mu, phosphate fertilizer 3.5 kg, potassium fertilizer 4.5 kg; per mu yield level of more than 200 kg, 6 kg of nitrogen fertilizer, 3 kg of phosphate fertilizer, 4 kg of potassium fertilizer.
Third, seed dressing: seed sowing with soybean rhizobium before planting.
Fourth, calcium fertilizer: 50-100 kg of calcium fertilizer per acre.
5. The soils lacking boron and molybdenum are sprayed with 0.1% borax and ammonium molybdate leaves at the seedling stage and initial flowering stage respectively.
First, the amount of organic fertilizer application: about 2000 kg per mu.
Second, the application rate of nitrogen, phosphorus and potassium: the yield level per mu is less than 150 kg, 8 kg of nitrogen fertilizer, 4 kg of phosphate fertilizer and 5 kg of potassium fertilizer; the yield level per mu is 150-200 kg, 7 kg of nitrogen fertilizer per mu, phosphate fertilizer 3.5 kg, potassium fertilizer 4.5 kg; per mu yield level of more than 200 kg, 6 kg of nitrogen fertilizer, 3 kg of phosphate fertilizer, 4 kg of potassium fertilizer.
Third, seed dressing: seed sowing with soybean rhizobium before planting.
Fourth, calcium fertilizer: 50-100 kg of calcium fertilizer per acre.
5. The soils lacking boron and molybdenum are sprayed with 0.1% borax and ammonium molybdate leaves at the seedling stage and initial flowering stage respectively.
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