水溶性高分子材料肥料包膜与缓控释性能研究  

Application of the Hydrophilic Polymer in Fertilizer Coating

作　　者：王亮[1] 秦裕波[2] 于阁杰[1] 石元亮[1] 

机构地区：[1]中国科学院沈阳应用生态研究所 [2]海南大学,海南海口570228

出　　处：《土壤通报》2008年第4期861-864,共4页Chinese Journal of Soil Science

基　　金：07KLT911J6缓释肥料新产品研制

摘　　要：以亲水基团-COOH改性后的水溶性聚氨酯溶液为包膜材料,用转鼓包衣工艺制备包膜肥料。选择土柱淋溶法和土壤培养法对包膜肥料进行评价表明:水性聚氨酯在喷涂到肥料表面后能发生交联反应,去除其亲水性,成膜性良好。包膜后肥料比未包膜肥料,在释放性质上大大改善,可以有效控制养分的释放,包膜量为6%时较为理想。PU resin was choosen for fertilizer coating. Hydrophilic group -COOH was grafted into PU resin, then it could be dissdved with water at any ratio. And the hydrophilic PU solution was used to coat N and K compound fertilizer in rotating drum. Soil column leaching method and soil incubation experiment were used to study the nutrient release property of coated fertilizer. The result shows that the hydrophilic PU occurs crosslinking reaction after it was sprayed to fertilizer particle, and the membrane formed can control the nutrient release of fertilizer efficiently, the optional amount for PU was 6% in weight.

关 键 词：改性 交联反应 控释 包膜肥料 

分 类 号：S143.15[农业科学—肥料学]