环境条件对土壤中啶虫脒降解的影响  

Effect of Environmental Conditions on the Degradation of Acetamiprid in Soil

作　　者：母昌立 余向阳 刘贤进 

机构地区：[1]江苏省食品质量安全重点实验室-省部共建国家重点实验室培育基地,南京210014

出　　处：《农药》2011年第5期355-358,364,共5页Agrochemicals

基　　金：国家科技支撑计划项目(2006BAD08A03);江苏省农业科技创新项目(CX09601)

摘　　要：[目的]研究土壤中啶虫脒在不同环境下的降解规律。[方法]在室内研究了环境条件对土壤中啶虫脒降解动态的影响。[结果]温度和湿度均可影响土壤啶虫脒降解,温度过高或过低均不利于啶虫脒降解,在25、35℃时,其降解较快,半衰期(t1/2)分别为8.12、5.34 d,在15、50℃时,t1/2分别为18.43、11.75 d;其降解的最适土壤湿度为40%、60%,t1/2分别为8.06、8.12 d;在灭菌和未灭菌土壤中,其t1/2分别为29.37、8.12 d。[结论]微生物降解是啶虫脒在土壤中的主要降解形式,影响微生物活性的因素均能影响其在土壤中的降解。In order to research the degradation regular of acetamiprid in soil under different conditions.[Methods]The effect of environmental conditions on the degradation dynamic of acetamiprid in soil wasresearched in lab conditions.[Results]The degradation of acetamiprid in soil were affected by temperature andsoil humility,excess or too low temperature was detrimental to the degradation,25 and 35°C were the optimumtemperature,the half-life value of acetamiprid（t1/2）were 8.12 and 5.24 d respectively,at 15 and 50°C,the t1/2were18.43 and 11.75 d.The optimum soil humilities to the degradation of acetamiprid were 40 and 60%,the t1/2were8.06 and 8.12 d,the t1/2in unsterilized soil and sterilized soil were 29.37 and 8.12 d,correspondingly.[Conclusions]Primarily,the degradation of acetamiprid in soil was induced by microbe,the factors which affect microbialactivity could affect its degradation in soil.

关 键 词：啶虫脒 温度 土壤湿度 土壤 降解 

分 类 号：X592[环境科学与工程—环境工程]