Evaluation Method for Nutrient Release Characteristics of Coated Controlled-release Urea Fertilizer

According to the popularity of urea,we studied a method for determining nitrogen chemistry from coated controlled-release urea fertilizer.With the leaching experiments of soil and water,the model of N nutrient releasing characteristics was ama;gsed.The results showed that the method could evaluate the effect of coated controlled-release urea fertilizer.This method was more precise for studying the mechanism of water resisting material coated controlled-release urea fertilizer.