| Residue and persistence of insecticide l-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea in C hinese cabbage and soils in the Northern China |
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| 作者姓名： | Mo Hanhong An Fengchun Yang Kewu Bi Wangfu Deng Wenhong |
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| 作者单位： | Research Center for Eco-Environmental Sciences，Berg 100085，China,Research Center for Eco-Environmental Sciences，Berg 100085，China,Research Center for Eco-Environmental Sciences，Berg 100085，China,Biology Center of Befjing Forestry University，Berg 100083，China,Biology Center of Befjing Forestry University，Berg 100083，China |
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| 摘 要： | ![]()
The residue and persistence of the insect growth regulator 1-(2-(chlorobenzoyl)-3-(4-chlorophenyl)urga(CCU)in Chinese cabbage and soil in the field were studied in Northern China during 1988-1989．The degradation of CCU in soils was also studied under laboratory conditions．The CCU was found to be unstable in Chmese cabbage and soil in field．The half-life ofCCU was 13.2-14.0 days in Chinese cabbage and 8.8-27.0 days in soil,respectively．Three ppm as the maximum residue level for CCU in Chinese cabbage and 21 days as the preharvest interval for the vegetable treated with CCU were recommendced．
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| 关 键 词： | pesticide；l-(2-chlombenzoyl)-3-(4-chlorophenyl)urea,residue；Chinese cabbage soil． |
| 收稿时间： | 1991-12-05 |
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