Influence of butachlor on soil enzymes and Microbial growth

文献类型： 外文期刊

第一作者： Xia, Xiaoming

作者： Xia, Xiaoming;Zhao, Ming;Wang, Hongyan;Ma, Hui

作者机构：

关键词： Butachlor; soil enzymes; microorganisms; toxic effect

期刊名称：JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT （ 影响因子：0.435； 五年影响因子：0.484 ）

ISSN： 1459-0255

年卷期： 2011 年 9 卷 2 期

页码：

收录情况： SCI

摘要： The effects of butachlor on soil enzymes activity (urease, phosphatase and dehydrogenase) and soil microorganism were determined. The results showed that urease activity was stimulated by butachlor (5 mg/kg and 10 mg/kg) on day 1 and 7 and inhibited on day 14 and 21. In the soil samples with 50 and 100 mg/kg of butachlor, urease activity was inhibited during the whole exposure time. In addition, butachlor decreased the activities of phosphatase, while increased dehydrogenase activities in all treatments during the whole incubation period. In the case of soil microorganisms, the application of 5 mg/kg of butachlor did not negatively affect the number of soil microbes. However, butachlor (100 mg/kg) significantly decreased the number of soil microbes and had adverse affects on microbial activity. In the present experiment, the effects of butachlor on the growth of microorganisms were similar to urease and phosphatase, while differed from dehydrogenase. These results suggested that changes in enzyme activity and soil microbial amounts during exposure periods were sensitive parameters to assess the extent of injury caused by butachlor.

分类号： TS2

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