毒死蜱在土壤中的淋溶规律  

The Leaching Law of Chlorpyrifos in Soil

作　　者：王玉军[1] 张铎 李文朋[1] 张妤[1] 邢志贤 

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]长春净月经济开发区环保局,长春130122 [3]河北省环境监测中心站,石家庄050037

出　　处：《农药》2012年第2期114-116,126,共4页Agrochemicals

摘　　要：[方法]通过土壤柱试验,模拟研究了在扣除地表径流影响的条件下,毒死蜱在黑土和草甸黑土中淋溶规律。[结果]当淋溶速度由1.8 mL/min增加到4.4 mL/min时,毒死蜱在土壤中的残留量降低,淋出量增幅分别为10.9%(黑土)和9.7%(草甸黑土);淋溶液pH值越低、土壤有机质含量越高对毒死蜱的淋溶作用越明显;当毒死蜱的添加量增加1倍时,淋出量分别增加69.7%(黑土)和71.2%(草甸黑土)。[结论]毒死蜱在土壤柱中的淋溶受到淋溶速度、pH值、土壤有机质等因素的影响。[Methods] The leaching law of chlorpyrifos was studied in the black soil and meadow black soil under the conditions of deducting the influence of surface runoff through the soil column test.[Results] When the leaching speed increased from 1.8 to 4.4 mL/min,the amount of chlorpyrifos decreased on the soil residues.The amount of the increase in leaching out were 10.9（black soil） and 9.7%（meadow black soil） respectively.The more obvious effect on the leaching of chlorpyrifos was achieved with the lower solution pH and the higher content of soil organic matter.When the additive amount of chlorpyrifos was doubled,the amount of the leaching out were increased 69.7（black soil） and 71.2%（meadow black soil） respectively.[Conclusions] The leaching of chlorpyrifos in soil column was affected by the leaching speed,pH value,soil organic matter and other factors.

关 键 词：毒死蜱 淋溶 土壤 PH值 有机质 

分 类 号：TQ450.26[化学工程—农药化工]