农药学学报2011，Vol.13Issue(4)：381-386,6.DOI:10.3969/j.issn.1008-7303.2011.04.09
降解菌株DG-S-01对菜薹和土壤中3种拟除虫菊酯类农药降解动力学的影响
Degradation kinetics of three pyrethroid insecticides by strain DG-S-01 in flowering Chinese cabbage and soil
摘要
Abstract
Degradation kinetics of beta-cypermethrin, lambda-cyhalothrin and fenvalerate by Ochrobactrum sp. Strain DG-S-01 in flowering Chinese cabbage ( Brassica campestris L. Sp. ) and soil were investigated by pot and field plot experiments. The results showed that strain DG-S-01 could effectively degrade these pyrethroid residues in flowering Chinese cabbage and soil. The degradation followed first-order kinetics and the half lives (t1/2) shortened by 1. 5 -53.2 h compared with control. The results also indicated that the pyrethroid residues in flowering Chinese cabbage evidently decreased as increase of treatment time. The residues of fceta-cypermethrin and lambda-cyhalothrin in flowering Chinese cabbage were below 0. 5 mg/kg after 72 h from treatment. The residues of beta-cypermethrin and lambda-cyhalothrin in soil also decreased as increase of treatment time, and the residues were below 1 mg/kg after 72 h. But it's observed that the fenvalerate residues in soil increased first,then decreasedwith the extension of treatment time. The pyrethroid residues in flowering Chinese cabbage and soilafter treated with strain DG-S-01 were significantly lower than the control.关键词
:降解菌/菜薹/土壤/拟除虫菊酯类农药/残留Key words
biodegradation/ Brassica campestris L. Sp. / soil/ pyrethroid insecticides/ residues分类
资源环境引用本文复制引用
陈少华,李亚楠,赖开平,胡美英,安国栋..降解菌株DG-S-01对菜薹和土壤中3种拟除虫菊酯类农药降解动力学的影响[J].农药学学报,2011,13(4):381-386,6.基金项目
国家自然科学基金项目(30871660) （30871660）
广东省科技计划项目(2009B,020310005) （2009B,020310005）
