The role of diammonium phosphate The chemical nature of diammonium phosphate is alkaline, so it belongs to alkaline fertilizer. Diammonium phosphate is a high-concentration quick-acting nitrogen and phosphorus compound fertilizer with phosphorus as the main element. It is suitable for most crops and also suitable for use in various soils. It has a wide range of applications and can be used as base fertilizer or topdressing. can.
Application of diammonium phosphate Diammonium phosphate can be used to fertilize a variety of soil types in paddy fields and dry fields. It is suitable for most crops such as rice, wheat, corn, sweet potato, peanuts, rape, and peanuts. It is especially suitable for crops that require hydrogen and phosphorus such as sugarcane and water chestnuts. Diammonium phosphate can be used in combination with ammonium bicarbonate, urea,ammonium chloride, potassium chloride, ammonium nitrate and other fertilizers. Avoid mixed application with acidic fertilizers such as ammonium sulfate and superphosphate. The effect after use is relatively good. Promote plant growth.
How to use diammonium phosphate
1. Practice has proved that diammonium phosphate can be used to fertilize various soil types in paddy fields and dry land, suitable for most crops such as rice, wheat, corn, sweet potato, peanut, rape, peanut, etc., especially suitable for hydrogen-phosphorus demand crops such as sugarcane and water chestnut.
2. Diammonium phosphate can be used in combination with ammonium bicarbonate, urea, ammonium chloride, potassium chloride, ammonium nitrate and other fertilizers. Avoid mixed application with acidic fertilizers such as ammonium sulfate and superphosphate.
3. Experiments show that diammonium phosphate combined with nitrogen and potassium fertilizers (chlorine-containing fertilizers should not be used for chlorine-free crops) are suitable for crop basal fertilizer application, with a dosage of 225～300kg/h㎡; application in paddy field: After turning the plow, apply it to the shallow water layer; Dry land application: deep application during plowing and consolidation, mixing of fertile soil. Mix diammonium phosphate and decomposed organic fertilizer with neutral pH and apply after composting, the fertilizer is effective. When making seed fertilizer, it should be applied 1 to 2 days before sowing, the dosage is 100-150kg/h㎡, and the fertile soil is evenly mixed to avoid direct contact between seeds and fertilizer.
4. For fertilization with aqueous solution of diammonium phosphate, the diammonium phosphate (nitrogen and potassium fertilizer depending on the crop type) should be dissolved in water at a ratio of 1:5 at room temperature in the vicinity of the fertilization site 1 to 2 days before fertilization. After dissolving, take the fertilizer solution and dilute it with water at 1:25-30, or use biogas liquid fertilizer to dissolve, and the amount of fertilizer solution with water is 60-80 times. The fertilization concentration should be lighter in the seedling stage of the crop or when the soil is dry; the fertilization concentration can be appropriately increased during the adult plant stage and the soil is moist.
Contraindications for the use of diammonium phosphate Diammonium phosphate contains more phosphate ions.After fertilizing plants, it will increase the acidity of the soil on the acidic soil, which may affect the growth of plants. Be careful not to use it as a top dressing. Spread granular diammonium phosphate on the surface, the root system will not absorb it, and the fertilizer effect will be lost. Avoid mixing with acidic fertilizers, such as ammonium sulfate, superphosphate, etc., which will be more acidic and cause impact.