轻稀土硝酸盐对小白菜中溴氰菊酯降解的影响  

Effect of Light Rare Earth Nitrate on Degradation of Decamethrin in Chinese Cabbage(Brassica chinensis Linn.)

作　　者：汪承润[1] 汪承刚[2] 卢英杰[2] 卢韫[1] 施翠娥[1] 郭汉卿[1] 

机构地区：[1]淮南师范学院 [2]淮南市农业科学研究所

出　　处：《中国蔬菜》2006年第12期16-19,共4页China Vegetables

基　　金：安徽省教育厅自然科学基金项目(2005KJ197);淮南市科技局自然科学基金项目

摘　　要：运用单一轻稀土硝酸盐及其不同混合溶液喷施或灌施小白菜,10d后喷施溴氰菊酯,喷药3d后检测叶片中农药残留量。结果表明,高剂量稀土硝酸盐溶液(≥1.8×10-5mg·L-1)抑制溴氰菊酯的降解,低剂量稀土硝酸盐溶液(≤1.8×10-6mg·L-1)则促进溴氰菊酯的降解,且稀土溶液与农药的不同处理方式(喷施,灌施或处理的时间顺序)对小白菜中溴氰菊酯降解的促进或抑制作用均产生不同影响。Chinese cabbage（Brassica chinensis Linn. ）was sprayed or irrigated with various doses of single light rare earth nitrate or their different compounds;pesticide residue was tested 3 days after spraying decamethrin. The result showed that decamethrin＇s degradation was suppressed by high concentrations of rare earth nitrate solutions （ ≥ 1.8 ×10^-5mg·L^-1 ）, and promoted by low concentrations （ ≤ 1. 8 ×10^-6mg·L^-1）. Additionally, the suppression or promotion of pesticide＇s degradation was influenced by the treating methods of pesticide and rare earth solutions,such as spraying, irrigation or treating scheduling.

关 键 词：轻稀土 小白菜 溴氰菊酯 农药残留 降解 

分 类 号：S634.3[农业科学—蔬菜学]