2009•Xibei Linxueyuan xuebaoRequires access
Degradation Dynamic of Cypermethrin in Apple Orchard Soil
Zhengyang Zhao
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Abstract
In order to assess its eco-environmental behavior and effect of cypermethrin,the degradation trends of cypermethrin in three kinds of soil planted apple were analyzed by gas chromatography.The results showed that the degradation was a macrobiotic process rather than nonbioligical degradetion.The degradation behaviors accorded with first order kinetics with half life from 19.8 d to 24.9 d at 25℃.Half lives of cypermethrin in apple orchard soils were highly negatively correlation with organic matter contents and pH values with correlation coefficients around 0.9.The suitable temperature for degradation of cypermethrin was 30~35℃.