The Principle of Release of Controlled Release Fertilizer

The controlled release fertilizer is made from polymer resin, which packaging the fertilizers such as urea, compound fertilizer and granular potash. The nutrients are slowly released through the micropores on the membrane. Through the advanced coating process, the nutrient release curve being consistent withthe absorption of crop can be achieved, greatly improving the utilization of nutrients.

Advantages of controlled release fertilizer:
(1) It can improve fertilizer utilization rate and reduce nutrient loss caused by reducing fertilization is inconsistent with crop absorption.
(2) It can reduce the toxicity caused by high ion concentration (especially the damage to seeds).
(3) Reduce the number of fertilization, save fertilizer costs and energy consumption.
(4) Increase crop yield.