Diammonium phosphate is a common fertilizer and is widely used. However, many people do not know much about the functions and applications of diammonium phosphate. Below, the editor will take you to understand the functions and applications of diammonium phosphate. Application, usage and contraindications.
The role of diammonium phosphate
The chemical properties of diammonium phosphate are alkaline, so it is an alkaline fertilizer. Diammonium phosphate is a high-concentration, quick-acting nitrogen and phosphorus compound fertilizer mainly composed of phosphorus. It is suitable for most crops and is also suitable for use in various soils. It has a wide range of uses and can be used as base fertilizer or top dressing. Can.
Applications of diammonium phosphate
Diammonium phosphate can be used to fertilize a variety of soil types in paddy fields and dry lands. It is suitable for most crops such as rice, wheat, corn, sweet potato, peanut, rapeseed, and peanuts. It is especially suitable for hydrogen-loving crops that require phosphorus such as sugar cane and water chestnuts. Diammonium phosphate can be used together with ammonium bicarbonate, urea, ammonium chloride, potassium chloride, ammonium nitrate and other chemical fertilizers. Avoid mixing with acidic fertilizers such as ammonium sulfate and superphosphate. The effect after use is better. Promote plant growth.
How to use diammonium phosphate
1. Practice has proven that diammonium phosphate can be used to fertilize various soil types in paddy fields and dry lands. It is suitable for most crops such as rice, wheat, corn, sweet potato, peanut, rapeseed, and peanuts. It is especially suitable for hydrogen-loving phosphorus such as sugar cane and water chestnuts. crop.
2. Diammonium phosphate can be used together with ammonium bicarbonate, urea, ammonium chloride, potassium chloride, ammonium nitrate and other chemical fertilizers. Avoid mixing with acidic fertilizers such as ammonium sulfate and superphosphate.
3. Tests have shown that diammonium phosphate combined with nitrogen and potassium fertilizers (chlorine-containing fertilizers are not allowed for chlorine-averse crops) is suitable for crop base fertilizer application, with a dosage of 225~300kg/h㎡; for application in paddy fields: after plowing, apply it into the shallow water layer Rake and level; application on dry land: apply deeply when plowing and trimming the soil, and mix the fertilizer with the soil. Mix diammonium phosphate with decomposed organic fertilizer with neutral pH and then apply it after composting to improve fertilizer efficiency. When used as seed fertilizer, silicone coating additives should be applied 1 to 2 days before sowing. The dosage of silicone emulsion is 100 to 150kg/h㎡. The fertilizer should be evenly mixed to avoid direct contact between seeds and fertilizer.
4. For fertilization with diammonium phosphate aqueous solution, diammonium phosphate (nitrogen-potassium fertilizer depending on the type of crop) should be mixed with water at a ratio of 1:5 and dissolved at room temperature 1 to 2 days before fertilization. Stir several times during the process. After the fertilizer is completely dissolved, dilute the fertilizer solution with water at a ratio of 1:25 to 30 and apply it. Biogas liquid fertilizer can also be used to dissolve the fertilizer solution. The amount of fertilizer solution mixed with water is 60 to 80 times. The fertilization concentration should be lighter during the seedling stage of the crop or when the soil is dry; during the adult plant stage and when the soil is moist, the fertilization concentration can be appropriately increased.
Contraindications for using diammonium phosphate
Diammonium phosphate contains a lot of phosphate ions. After fertilizing plants, it will increase the acidity of the soil in acidic soil, which may affect plant growth. Be careful not to use it as a top dressing. Spread granular diammonium phosphate on the surface. The roots will not absorb it and the fertilizer effect will be lost. Avoid mixing it with acidic fertilizers, such as ammonium sulfate, superphosphate, etc., as this will make it more acidic and cause negative effects.
