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土壤中残留毒死蜱的作物效应
引用本文:汪立刚,蒋新,颜冬云,王芳,卞永荣,吴金水,李新爱.土壤中残留毒死蜱的作物效应[J].环境科学,2006,27(2):366-370.
作者姓名:汪立刚  蒋新  颜冬云  王芳  卞永荣  吴金水  李新爱
作者单位:1. 中国科学院南京土壤研究所,南京,210008;中国科学院亚热带农业生态研究所,长沙,410125
2. 中国科学院南京土壤研究所,南京,210008
3. 中国科学院亚热带农业生态研究所,长沙,410125
基金项目:国家杰出青年科学基金项目(40325001);国家重点基础研究发展规划(973)项目(2002CB415203,2002CB410805);中国科学院知识创新工程重大项目(KZCXI-SW-01-14)
摘    要:应用盆栽实验和室内分析方法,研究了红壤中残留毒死蜱农药对小麦、油菜苗生长及其对农药吸收的影响.结果表明,红壤中残留毒死蜱初始浓度为1~10μg/g,20d后,小麦苗地上部吸收的浓度可达0.257~4.50μg/g,油菜苗地上部吸收浓度可达到0.249~2.02μg/g;红壤中残留毒死蜱浓度低于10μg/g,对小麦苗地上部鲜重没有显著影响,低于5μg/g,对油菜苗地上部鲜重没有显著影响;残留毒死蜱在油菜苗根际的降解比非根际快1.4~4.2倍;油菜苗根际土细菌、真菌数量分别是非根际土的3.18倍、1.84倍,而放线菌数量差异不大;根际土比非根际土pH值低约0.19~0.23.

关 键 词:红壤  毒死蜱  残留  油菜  小麦
文章编号:0250-3301(2006)02-0366-05
收稿时间:1/5/2005 12:00:00 AM
修稿时间:2005-01-052005-04-15

Effect of Chlorpyrifos Residue in Red Soil on Crops
WANG Li-gang,JIANG Xin,YAN Dong-yun,WANG Fang,BIAN Yong-rong,WU Jin-shui and LI Xin-ai.Effect of Chlorpyrifos Residue in Red Soil on Crops[J].Chinese Journal of Environmental Science,2006,27(2):366-370.
Authors:WANG Li-gang  JIANG Xin  YAN Dong-yun  WANG Fang  BIAN Yong-rong  WU Jin-shui and LI Xin-ai
Institution:1. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; 2. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
Abstract:The pot cultivation experiment method, integrating with laboratory analysis, was employed for exploring the influence of chlorpyrifos residue in red soil on growth of wheat and oil-seed rape seedlings, and the uptake of crops to chlorpyrifos residue. The results show that, wheat seedlings and oil-seed rape seedlings can absorb chlorpyrifos residue from soil to reach the concentration of 0.257 to approximately 4.50 microg/g and 0.249 to approximately 2.021 microg/g, respectively, 20 days later since chlorpyrifos was introduced into the pots, on condition that the initial concentration of chlorpyrifos residue in red soil was 1 to approximately 10 microg/g. The initial concentration of chlorpyrifos residue in red soil equivalent to or below 10 micro/g has not significant influence on growth of wheat seedlings. Similarly, the concentration equivalent to or below 5 microg/g has not significant influence on growth of oil-seed rape seedlings. The degradation rate in oil-seed rape rhizosphere soil is 1.4 to approximately 4.2 times more than in that in unvegetated soil. The amount of bacterium and fungus in oil-seed rape rhizosphere is 3.18 times and 1.84 times as much as these in unvegetated soil, respectively. However, there is no substantial difference of actinomyces between in rhizosphere soil and in unvegetated soil. Compared with unvegetated soil, pH in rhizosphere soil is lowered by 0. 19 to approximately 0.23.
Keywords:red soil  chlorpyrifos  residue  wheat  oil-seed rape
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