Application of trace elements in soybean production

When sowing, apply 0.5-1kg zinc sulfate per mu or 0.2-0.3% zinc sulfate solution in seedling stage and early flowering stage.

The effective boron content in soil was less than 0.5 mg/l, and the boron effect was significant.0.1% boric acid or borax can be used as external spraying.

Molybdenum fertilizer can be mixed as seed fertilizer or deep root application.1. Seed dressing: put 1 ~ 2 grams of ammonium molybdate per kg of seeds into a porcelain basin and add water to dissolve the seeds. The amount of water can mix the seeds wet without remaining fertilizer.2. Outside root fertilization: apply 0.05% ~ 0.1% ammonium molybdate, 50 kg solution per mu, and spray the fertilizer from seedling stage to before flowering.3. Seed and fertilizer: 10 grams of ammonium molybdate per mu is dissolved in water and mixed with potassium phosphate or farm manure for furrow or hole application.