| 阿维菌素B1a对土壤微生物和蚯蚓的影响 |
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| 引用本文： | 孙英健,刁晓平,沈建忠.阿维菌素B1a对土壤微生物和蚯蚓的影响[J].应用生态学报,2005,16(11):2140-2143. |
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| 作者姓名： | 孙英健 刁晓平 沈建忠 |
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| 作者单位： | 1. 中国农业大学, 北京 100094;2. 北京农学院动物科学系, 北京 102206 |
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| 基金项目： | 国家自然科学基金重点资助项目（30130140）. |
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| 摘 要： | 研究了不同阿维菌素B1a浓度对种土壤微生物生长和呼吸强度的影响及对土壤中蚯蚓的急性毒性.结果表明,土壤中阿维菌素B1a浓度在83.3 mg·kg-1以上时对种土壤细菌均表现出明显的抑制作用,但对土壤真菌不表现抑制作用.高浓度阿维菌素B1a对土壤微生物的呼吸强度有抑制作用,并且在不同土壤其作用有差异.采用滤纸接触试验和人工土壤试验测定阿维菌素对蚯蚓的急性毒性(半数致死量,LD50),接触毒性LD50为.63μg·cm-2,土壤法试验测定的LD50在处理后第7 d和第1 d分别为2.13和17.06 mg·kg-1.
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| 关 键 词： | 阿维菌素B1a 土壤微生物 蚯蚓 急性毒性 |
| 文章编号： | 1001-9332(2005)11-2140-04 |
| 收稿时间： | 2004-09-10 |
| 修稿时间： | 2005-06-22 |
Effects of avermectin B1a on soil microorganism and earthworm(Eisenia fetida) |
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| SUN Yingjian,DIAO Xiaoping,SHEN Jianzhong.Effects of avermectin B1a on soil microorganism and earthworm(Eisenia fetida)[J].Chinese Journal of Applied Ecology,2005,16(11):2140-2143. |
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| Authors: | SUN Yingjian DIAO Xiaoping SHEN Jianzhong |
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| Institution: | 1. China Agricultural University, Beijing 100094, China;2. Department of Animal Science, Beijing Agricultural College, Beijing 102206, China |
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| Abstract: | Avermectins are the pesticides widely applied in agriculture. This paper studied the effects of different concentration avermectin B1a (AVM B1a) on soil bacteria and fungi, soil respiration, and soil earthworm (Eisenia fetida). The results showed that in 4 test soils, bacteria were significantly inhibited when the AVM B1a concentration was higher than 83.3 mg x kg(-1), while fungi were less impaired. Soil respiration was also inhibited by high concentration AVM B1a, which differed with soil types. The half lethal dosage (LD50) of AVM B1a to soil earthworm was estimated as 4.63 microg x cm(-2) in filter paper contact test, and as 24.13 and 17.06 mg x kg(-1), respectively after treated 7 and 14 days in artificial soil. |
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| Keywords: | Avermectin B1a Soil microorganism Earthworm Acute toxicity |
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