Cotton scientific fertilization technology

Scientific fertilization of cotton is the key to achieving high yield. Fertilization should master the principles of applying base fertilizer early, increasing organic fertilizer and increasing phosphorus and potassium fertilizer. Focus on the following "four fertilizers".
1. Lifting seedling fertilizer: Generally, the bottom fat foot is not applied to the seedling fertilizer, and the bottom fertilizer is insufficient. In particular, there is no quick-acting nitrogen fertilizer in the base fertilizer, and 5-7 kg of ternary compound fertilizer can be applied per mu.
2. Light application of bud fertilizer: bud period should promote seedlings and control large seedlings to make the group balance growth. The bud fertilizer should be applied lightly and deeply. Generally, 7-10 kg (or 15 kg of ammonium bicarbonate), 1 kg of boron fertilizer, 10 kg of potassium fertilizer, or 20-25 kg of compound fertilizer should be applied per mu.
3. Reapply flower bell fertilizer: flower bell fertilizer should be early and heavy. Apply 20-25 kg of urea per urea (or 25 kg of ammonium bicarbonate) and 15 kg of potassium fertilizer.
4. Apply top cover fertilizer: 8-10 kg of urea per acre after topping. Or foliar spray fertilizer.
Huaxian County Shang Hongyan
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