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毒死蜱、联苯菊酯在模拟房屋白蚁预防施工的野外试验地的残留动态研究

Study on Residue of Chlorpyrifos and Bifenthrin in Field Soil Simulating House Termite Prevention Treatment

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【作者】 林雁黄晓光张锡良

【Author】 LIN Yan~*,HUANG Xiao-guang,ZHANG Xi-liang(Nanjing Termite Control Institute,Nanjing 210002,China)

【机构】 南京市白蚁防治研究所南京市白蚁防治研究所 江苏南京210004江苏南京210004

【摘要】 研究了在野外条件下不同施药量和不同处理方法毒死蜱和联苯菊酯在土壤中的降解动态。结果表明,联苯菊酯的持效期比毒死蜱的长。在白蚁防治推荐使用浓度下,两种农药在有覆盖处理组的降解都比无覆盖处理组的慢。同时,施药量对降解速率有重要影响。毒死蜱在施药量30g/m2、20g/m2有覆盖处理组及30g/m2无覆盖处理组的半衰期依次为186.3、171.3、60.2d。在施药量为1.875g/m2、1.250g/m2有覆盖处理组及1.875g/m2无覆盖处理组中,联苯菊酯的半衰期依次为302.6、203.3、107.0d。

【Abstract】 The residue of chlorpyrifos and bifenthrin in field soil at different dosage and treatment with or without covering was studied at termiticidal application rates.The results showed that bifenthrin was more stable than chlorpyrifos.The rate of degradation of two termiticides in treatment with covering was slower than without covering and the initial concentration of termiticides in soil had important effect on their degradation rate.The half-life of chlorpyrifos in 30 g/m~2 and 20 g/m~2 treatment with covering was 186.3 days and 171.3 days,but it was decreased to 60.2 days in 30 g/m~2 treatmentwithout covering.As for bifenthrin,the half-life was 302.6,203.3,107.0 days respectively in order in 1.875 g/m~2 and 1.250 g/m~2 treatment with covering and 1.875 g/m~2 treatment without covering.

【关键词】 毒死蜱联苯菊酯白蚁土壤残留
【Key words】 chlorpyrifosbifenthrintermiteresidue in soil
  • 【文献出处】 农药学学报 ,Chinese Journal of Pesticide Science , 编辑部邮箱 ,2006年02期
  • 【分类号】S482.3
  • 【被引频次】36
  • 【下载频次】225
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