不同栽培方式下豇豆中4种农药的残留消解  

Degradation of Four Pesticide Residues in Cowpea among Different Planting Patterns

作　　者：李建国[1] 韩丙军[1] 谢德芳[1] 吕岱竹[1] 任红[2] 许如意[2] 

机构地区：[1]中国热带农业科学院分析测试中心,海南海口571101 [2]三亚市南繁科学技术研究院,海南三亚572000

出　　处：《热带作物学报》2012年第2期386-389,共4页Chinese Journal of Tropical Crops

基　　金：海南省自然科学基金项目"几种农药在热带地区冬种豇豆上的消解动态研究"(No.311054)

摘　　要：为了研究保护地和露地2种栽培模式下高效氯氰菊酯、苯醚甲环唑、乐果和乙酰甲胺磷4种农药在豇豆中降解残留规律,分别采用气相色谱法电子捕获检测器和火焰光度检测器测定豇豆中高效氯氰菊酯、苯醚甲环唑和乐果、乙酰甲胺磷的残留量。结果表明:4种农药在豇豆中的消解都遵循指数型降解规律。保护地栽培下农药的降解速率总体上比露地的慢,一方面可更长时间的对害虫产生防治作用,但另一方面可能更易引起农药残留的安全隐患。因此,在豇豆的种植中,应当规范农药的使用,选用半衰期较短、降解较快的农药。The protected and open field experiments were conducted to study the degradation of beta cypermethrin,difenoconazole,dimethoate and acephate residues in cowpea.The GC with ECD and FPD were used to determine the residues of the four pesticides.The four pesticide residues degradation dynamics equations were calculated by a simple first-order kinetics equation.Compared with the open field planting pattern,the degradation rates of the four pesticides under protected field were slower.The pesticides used in cowpea under protected field could control the pests longer,but there was more safety risks in cowpea.In order to ensure the safety of cowpea,the rational use of pesticides must be paid attention to and the shorter half-life pesticides should be used in cowpea planting.

关 键 词：豇豆 农药残留 降解 保护地 露地 

分 类 号：S643.4[农业科学—蔬菜学]