Prospect and production of coated controlled release fertilizer
Coated controlled release fertilizer The traditional chemical fertilizer, such as N or a certain proportion of N, P, K compound fertilizer, is coated with a special biological or chemical water soluble polymer film. Based on the characteristics of film thickness, particle radius, diffusion coefficient, nutrient composition and dissolution, the release rate and amount of fertilizer nutrient are controlled according to the time of growing nutrient demand of crops, so that the release rate of fertilizer nutrient can fully match the needs of crops. What are the advantages of coated controlled release fertilizer? 1. Reduce human management cost After the fertilizer is made into particles by the rotary drum granulator , the coating process is carried out. The coated fertilizer greatly reduces the times of artificial labor fertilization, reduces the amount of fertilizer used, and reduces the loss of fertilizer, thus saving time, labor and money. 2. Increase of economic benefi...