Diammonium phosphate—— High concentration of quick acting chemical fertilizer
Di ammonium phosphate is a binary compound fertilizer containing 18% nitrogen (n) and 46% phosphorus (P205). It is a fertilizer with low nitrogen and high phosphorus, and the effect is particularly good when applied to phosphorus deficient soil. Di ammonium phosphate is a binary compound fertilizer with low nitrogen and high phosphorus. In phosphorus deficient soil, no matter what crop is planted, obvious yield increase effect can be obtained in the first year. This is because fertilization is in the right way, which solves the main contradiction between crop phosphorus demand and soil phosphorus deficiency. Di ammonium phosphate, also known as di ammonium hydrogen phosphate, is easily soluble in water and the aqueous solution is alkaline. Di ammonium phosphate is a high concentration of quick acting chemical fertilizer, which is suitable for all kinds of soil and crops. It has a more significant effect on crops that like nitrogen and need phosphorus. It is often used as base fertilizer and topdressing. Di ammonium phosphate contains nitrogen and phosphorus, so it can be regarded as a compound fertilizer with high concentration. Therefore, when it is used as seed fertilizer, avoid direct contact with seeds. Di ammonium phosphate is not only suitable for field crops and cash crops, but also for all kinds of soil. Di ammonium phosphate contains two nutrient elements, nitrogen and phosphorus, which are necessary for crop growth. The nitrogen element is an essential nutrient element in the plant growth stage and can promote the growth of crop leaves; Phosphorus is involved in photosynthesis and respiration in crops. It can not only promote the formation and growth of crop roots in the early morning, but also improve the adaptability of crops to the external environment, promote early maturity and improve the quality of crops. Phosphorus can also enhance the disease and insect resistance of some crops. Di ammonium phosphate is a high concentration nitrogen phosphorus compound fertilizer mainly containing phosphorus. The phosphorus content is about 60% and the nitrogen content is about 12%. The appearance is gray white or light yellow particles. Not easy to absorb moisture, not easy to agglomerate, easy to dissolve in water. Its chemical properties are acidic. It is suitable for all kinds of crops and soils, especially in alkaline soils and places with serious phosphorus deficiency. The yield increase effect is very obvious.
Di ammonium phosphate combined with nitrogen fertilizer and potassium fertilizer (chlorine containing fertilizer shall not be selected for chlorine avoiding crops) is the most suitable base fertilizer for crops; Application in paddy field: harrow the shallow water layer after ploughing; Dry land application: deep application during ploughing and border consolidation, and full mixing of fertilizer and soil. The fertilizer effect was the best when di ammonium phosphate was fully mixed with decomposed organic fertilizer with neutral pH and applied after composting. When seed fertilizer is used, it shall be applied 1 ~ 2 days before sowing, and the fertilizer and soil shall be evenly mixed to avoid direct contact between seeds and fertilizer.
For fertilization with Di ammonium phosphate aqueous solution, Di ammonium phosphate (nitrogen and potassium fertilizer according to crop type) shall be mixed with water at the ratio of 1:5 near the fertilization site 1 ~ 2D before fertilization, dissolved at room temperature, stirred for several times, and after the fertilizer is completely dissolved, the fertilizer solution shall be diluted with water at the ratio of 1:25 ~ 30, or dissolved with biogas gas-liquid fertilizer, and the water content of the fertilizer solution is 60 ~ 80 times. The concentration of fertilizer should be lighter at the seedling stage of crops or when the soil is dry; The fertilization concentration can be appropriately increased in the adult stage and soil moisture.
