土壤2017，Vol.49Issue(3)：500-504,5.DOI:10.13758/j.cnki.tr.2017.03.011
唑螨酯在土壤中的降解及淋溶特性
Degradation and Leaching of Fenpyroximate in Soils
摘要
Abstract
The behavioral characteristics of Fenpyroximate in environment was investigated by using the method of laboratory simulation test. The degradation and leaching of Fenpyroximate in three tested soils were studied through degradation half-life period andRf value to evaluate its safety in soil environment. The results showed that the degradation of Fenpyroximate in three tested soils satisfied the first-order kinetic equation. Under the aerobic conditions, the degradation half-life periods of yellow soil, paddy soil and calcareous soil were 81.5, 96.3 and 84.5 d, respectively. Fenpyroximate was most difficult to be degraded in paddy soil and more difficult to be degraded in yellow soil and calcareous soil. While under the anaerobic conditions, the half-life periods were 154.0, 56.3 and 43.3 d, respectively, Fenpyroximate was most difficult to be degraded in yellow soil and more difficult to be degraded in paddy soil and calcareous soil.Rfvalue of Fenpyroximate in yellow soil, paddy soil and calcareous soil were all 0.083. Fenpyroximate was not moveable in the three tested soils, thus, it would not pollute the underground water under normal conditions. Therefore, Fenpyroximate has strong stability in soil environment, thus, it is suggested that the dosage and application period of Fenpyroximate should be strictly controlled and the residual of Fenpyroximate also should be sternly monitored.关键词
唑螨酯/淋溶/降解/土壤Key words
Fenpyroximate/Leaching/Degradation/Soil分类
化学化工引用本文复制引用
段亚玲,李景壮,王睿,廖朝选,杨一,陈恺,杨鸿波,谭红..唑螨酯在土壤中的降解及淋溶特性[J].土壤,2017,49(3):500-504,5.基金项目
黔科中引地[2016]4001号、黔科合院地合[2012]7003号、黔科合外G字[2015]7001号、黔科合支撑[2016]2578-2号、黔科院J合字[2014]14号、黔科院J合字[2015]09号、黔科院J合字[2016]16号、黔科院J合字[2014]02号、贵州茶叶品质高质化技术与信息化合作研究(2015DFA41280)和西南地区典型茶园环境污染检测与评价项目(2010DS700124-KF1708)资助. （2015DFA41280）
