Summer soybeans have always had problems such as neglecting fertilization and extensive management, resulting in low soybean yield. In order to make a breakthrough in the production of soybeans, it is necessary to carry out scientific fertilization according to the characteristics of soybean fertilizer.

1. Adding organic fertilizer

Summer soybeans advocate the application of organic fertilizer to the former crops, and fertilize the soil, so that soybeans can increase the yield by using residual fertilizer.

2, skillfully apply nitrogen fertilizer

Because soybean itself has the ability to fix nitrogen, so nitrogen fertilizer does not need to be applied too much, the key is to highlight a "smart" word. Medium-low fertility fields, generally 5-8 kg of urea or 15-20 kg of ammonium bicarbonate; high-fertility fields can be applied with little or no nitrogen fertilizer, and excessive application is not only waste, but also reduces production.

3. Adding phosphate fertilizer

Soybean belongs to the phosphorus-producing crop and requires more phosphorus fertilizer. Therefore, it is necessary to increase the application of phosphate fertilizer in soybean cultivation. Phosphate fertilizer should be applied early, generally 20-25 kg of calcium phosphate per acre.

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4, with the application of potash

Potassium fertilizer plays an important role in improving crop stress resistance and preventing premature aging of crops. Generally, 10 kg of potassium chloride can be applied per mu, and it is applied to the soil together with the phosphate fertilizer.

5, foliar spray fertilizer

After the flowering period of soybean, the 2% urea solution can be sprayed on the weak and poorly growing fields; the field with the symptoms of deficiency can be sprayed with 0.5% ferrous sulfate solution or 0.2% zinc sulfate solution. Or 0.05% ammonium molybdate solution.

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