Diammonium phosphate is a kind of binary compound fertilizer with high phosphorus content. It has the advantages of high content, convenient use, economical benefits, and significant yield increase, and is very popular among farmers. In addition to being used as base fertilizer, diammonium phosphate can be used in many ways. Today, I will show you a few more ways to use it.
1. Base fertilizer: Diammonium phosphate is used as base fertilizer, which can be used alone as base fertilizer for leguminous crops that like phosphorus and have strong nitrogen-fixing ability. When diammonium phosphate is used as base fertilizer on other crops, it is necessary to supplement an appropriate amount of nitrogen and potassium fertilizers to increase the content of nitrogen and potassium. Since the role of base fertilizer is to supplement the nutrition of crops in the middle and late stages, DAP should be applied deeper.
2. Seed fertilizer: When diammonium phosphate is used as seed fertilizer, for direct seeding crops, seeds and fertilizers can be sown separately into the soil when sowing, so that there is a certain distance between seeds and fertilizers, which can ensure the nutritional needs of seedlings. The dosage per mu is generally controlled at 2.5 to 5.0 kg.
3. As seedling fertilizer: When diammonium phosphate is used as seedling fertilizer, the fertilizer can be crushed first and then mixed into the nutrient soil. The dosage per cubic meter can be 1-2 kg, which can promote the differentiation of flower buds of seedlings and prevent premature aging of seedlings.
4. Fertilizer for raising seedlings: Phosphorus in ammonium phosphate has poor mobility in the soil. Only when it is applied to the distribution area of the main root system of crops, can the absorption efficiency be improved. Therefore, when the crop seedlings that need to be transplanted are planted, hole application can be carried out as a fertilizer for raising seedlings, so that the crops can bloom and bear fruit earlier. The dosage per mu is 2-3 kg.
5. Foliar fertilizer: 1 day before fertilization, dissolve diammonium phosphate with water at a ratio of 1:5, stir several times during the period, and take the fertilizer liquid after the fertilizer is completely dissolved. Double spraying can make crops bloom and bear fruit earlier, improve the disease resistance of crops, and prevent premature senescence of plants.
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