【摘要】 通过溶出率试验和淋溶试验对研制的2种包膜肥料ZP1,ZP2的氮素释放特征进行了研究,结果表明,ZP1的初期溶出率和养分平均释放速率均高于ZP2,包膜肥料的养分释放符合缓释/控释肥料的基本要求;ZP1有一个养分释放高峰,ZP2有两个释放高峰,2种类型肥料的养分累积释放量均符合一级动力学方程.更多还原

【Abstract】 The nutrient release characteristics of two types of coated fertilizers ZP1,ZP2 was tested by water dissolution rate method and eluviating method in laboratory.The result is shown as follows:the preliminary dissolution rate and average nutrient release rate of ZP1 are higher than that of ZP2; the nutrient release of those fertilizers is accorded with the basic demand for controlled releasing fertilizer; ZP1 has only one peak but ZP2 has two peaks.Cumulative nutrient releasing of two coated fertilizers can be described quantitatively by the first-degree reaction dynamic equation.更多还原