A Preliminary Study on Natural Matrix Materials for Controlled Release Nitrogen Fertilizers

被引:0
|
作者
DU Chang-Wen
机构
基金
中国国家自然科学基金;
关键词
carrier; controlled release fertilizer; nitrogen fertilizer; polysaccharides;
D O I
暂无
中图分类号
S143.1 [氮肥];
学科分类号
090101 ;
摘要
A controlled release N fertilizer was developed by the carrier method using natural polysaccharides (PS) and urea. The results showed that mixing of PS and urea led to significant control of urea release. When a cross-linker (boric acid or glutaraldehyde) was added, a better control effect was observed. During a 30 min leaching time the nitrogen release rate from the controlled release fertilizer was nearly constant, which was significantly different from normal urea. One of the controlled release mechanisms was related to space resistance from a large molecular structure. Infrared (IR) analysis indicated that interaction of PS with urea
引用
收藏
页码:45 / 52
页数:8
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