DAP 18-46 Diammonium Phosphate. Diammonium Phosphate (Ammonium Phosphate Dibasic) is also a commonly used phosphate fertilizer. It has the following main uses in agriculture:
1.Phosphate fertilizer supplement: Diammonium phosphate is rich in phosphorus, which can effectively supply the phosphorus needed by plants. Phosphorus is an important nutrient element for plant growth and development, and plays an important role in root development, flower and fruit setting, etc. The use of diammonium phosphate can effectively promote the growth rate of plants, increase yield and quality.
2.Cover crops: DAP can be used for fertilization of cover crops. Cover crops are some fast-growing short-cycle crops planted after the main crops are harvested to protect soil quality, reduce nutrient loss, increase soil organic matter, and adjust soil pH. Provides cover crops with essential phosphorus for healthy growth.

3.Soil improvement: Also plays a certain role in soil improvement. Diammonium phosphate can increase the phosphorus content of the soil, improve soil nutrient status, and improve soil fertility. In addition, diammonium phosphate also has the effect of neutralizing the acidity of the soil, which helps to improve the acidic soil and increase the pH value of the soil.
4.Seed treatment: Similar to double superphosphate, diammonium phosphate can also be used for seed treatment. By soaking the seeds in the diammonium phosphate solution, the seeds can be provided with the required phosphorus and other nutrients, which can promote the germination and growth of the seeds, and improve the germination rate and viability of the seeds.