In view of the current application of organic fertilizers on soybean fertilization, the inoculation of rhizobium agents, and the neglect of nutrients in soy, calcium, magnesium, sulfur, boron, molybdenum, etc., it is recommended to adopt the following scientific fertilization methods: re-application of organic fertilizer, inoculation of soybean rhizobium In the soil lacking medium and trace elements, the application of medium and trace element fertilizers; 100% organic and phosphate fertilizers and 50% of nitrogen and potassium fertilizers are combined with the soil preparation before the transplanting, and the fertilizer is poured into the soil after application. Make soil and fertilizer fusion; 30% of nitrogen and potassium fertilizers are applied for seedlings; 20% of nitrogen and potassium fertilizers are applied as pre-flower fertilizers, and when fertilizing, firstly digging a fertilization ditch with a depth of 15-20 cm between two rows of soybeans. Then fertilize the soil.
The specific operation is as follows: the application rate of organic fertilizer is about 2000 kg per mu. The application rate of nitrogen, phosphorus and potassium is less than 150 kg per mu, and 8 kg of nitrogen fertilizer, 4 kg of phosphate fertilizer and 5 kg of potassium fertilizer; the yield per mu is 150-200 kg, 7 kg of nitrogen fertilizer and 3.5 kg of phosphate fertilizer. Potassium fertilizer 4.5 kg; the output level per mu is more than 200 kg, 6 kg of nitrogen fertilizer, 3 kg of phosphate fertilizer and 4 kg of potassium fertilizer. Seed dressing with soybean rhizobium before planting. Apply 50-100 kg of calcium fertilizer per acre. The soils deficient in boron and molybdenum were sprayed with 0.1% borax and ammonium molybdate leaves at the seedling stage and the initial flowering stage, respectively.
The specific operation is as follows: the application rate of organic fertilizer is about 2000 kg per mu. The application rate of nitrogen, phosphorus and potassium is less than 150 kg per mu, and 8 kg of nitrogen fertilizer, 4 kg of phosphate fertilizer and 5 kg of potassium fertilizer; the yield per mu is 150-200 kg, 7 kg of nitrogen fertilizer and 3.5 kg of phosphate fertilizer. Potassium fertilizer 4.5 kg; the output level per mu is more than 200 kg, 6 kg of nitrogen fertilizer, 3 kg of phosphate fertilizer and 4 kg of potassium fertilizer. Seed dressing with soybean rhizobium before planting. Apply 50-100 kg of calcium fertilizer per acre. The soils deficient in boron and molybdenum were sprayed with 0.1% borax and ammonium molybdate leaves at the seedling stage and the initial flowering stage, respectively.
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