National standard ammonium dihydrogen phosphate high-purity industrial grade fertilizer raw material, Shandong Dingxin spot supply

Description :

  Ammonium dihydrogen phosphate, commonly known as diammonium, is a high concentration quick acting nitrogen phosphorus compound fertilizer with the chemical formula (NH4) 2HPO4. It mainly solves the urgent needs of crops for nitrogen and phosphorus nutrients in the early stages of growth, especially suitable for phosphorus deficient soils and economic crops with high phosphorus requirements. As a typical binary compound fertilizer, diammonium dihydrogen phosphate not only provides essential nitrogen for plants to promote branch and leaf growth, but also provides efficient phosphorus to promote root development and flowering and fruiting. This product is widely used as a base fertilizer and topdressing, especially in arid and rainless areas or when used as a seed fertilizer. It can significantly improve crop yield and quality, and is an indispensable basic agricultural material in modern agricultural planting.

  This product is strictly produced and inspected in accordance with the national standard GB/T 10205-2009 "Monoammonium Phosphate, Diammonium Phosphate". In typical specifications, the total nutrient (N+P2O5) content is ≥ 64%, with nitrogen (N) content ≥ 18% and effective phosphorus pentoxide (P2O5) content ≥ 46%. The product appearance is gray white or dark gray particles with uniform particle size, usually between 2mm and 4mm, with good compressive strength and low moisture absorption, making it easy to store and mechanically fertilize. The high proportion of water-soluble phosphorus ensures that it can be quickly absorbed and utilized by crop roots after being applied to the soil. During the production process, strict granulation, drying, and screening processes are carried out to ensure that the product is free of impurities and clumps, meets the physical and chemical requirements of agricultural diammonium phosphate, and ensures the quality stability of each batch of products.

  When selecting, it is necessary to clarify the difference between diammonium hydrogen phosphate and monoammonium phosphate (MAP): diammonium has a higher nitrogen content, a pH value of about 7.8-8.2, is weakly alkaline, and is more suitable for use in acidic soils, effectively neutralizing soil acidity; And ammonium is acidic, more suitable for alkaline soil. In addition, when purchasing, attention should be paid to whether the total nutrient content meets the national standard requirement of 64%, in order to avoid purchasing low content alternatives that may affect fertilizer efficiency. For chlorine free crops such as tobacco and grapes, diammonium phosphate is an ideal phosphorus source supplement. If used for drip irrigation or sprinkler irrigation systems, it is necessary to choose water-soluble fertilizer grade products with extremely low insoluble content. Ordinary granular diammonium is only suitable for soil application and cannot be directly used in water fertilizer integrated facilities to avoid clogging the nozzle.

  It is recommended to apply deep as base fertilizer, with a soil cover thickness of 5-10 centimeters, to avoid direct contact between seeds and fertilizer to prevent seedling burning. The distance between seed and fertilizer should be kept at least 5 centimeters. In calcareous soil, diammonium dihydrogen phosphate is prone to combine with calcium ions to form insoluble calcium phosphate, which reduces fertilizer efficiency. Therefore, it is recommended to mix it with organic fertilizers or adopt centralized application. When storing, it should be placed in a cool, dry, and well ventilated warehouse to prevent moisture, clumping, and packaging damage. Although the product properties are relatively stable, long-term exposure to high temperature and humidity environments may still cause moisture absorption and decomposition, release ammonia gas, and result in nitrogen loss. Daily maintenance only requires regular inspection of the integrity of the packaging bags, following the first in, first out principle, to ensure the optimal use of diammonium hydrogen phosphate.

AfterSalesService :