| 秸秆覆盖对桑园土壤微生物年变化的影响 |
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| 引用本文： | 刘刚,佟万红,杜周和.秸秆覆盖对桑园土壤微生物年变化的影响[J].蚕业科学,2003,29(2):185-188. |
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| 作者姓名： | 刘刚 佟万红 杜周和 |
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| 作者单位： | 1. 四川省农业科学院蚕业研究所,南充,637000
2. 四川省绵阳市大桥中学 |
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| 摘 要： | 为提高桑园土壤肥力,调查了用秸杆覆盖桑园对桑园土壤微生物年变化的影响。结果表明:在桑树生长期内,采用秸秆覆盖措施可明显增加桑园土壤微生物数量,增加最多的是细菌,年平均增加150.99％;其次是氨化菌和固氮菌,分别增加142.24％和95.47％;真菌增加最少,为56.33％。4种土壤微生物年变化曲线,无论覆盖与对照,均呈单峰曲线变化,高峰期出现在8月或9月。
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| 关 键 词： | 桑园土壤 秸秆覆盖 微生物 |
| 文章编号： | 0257-4799(2003)02-0185-04 |
| 修稿时间： | 2002年7月29日 |
The Annual Change of Soil Microorganism in the Srtaw-covered Mulberry Field |
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| LIU Gang TONG Wanhong DU Zhouhe.The Annual Change of Soil Microorganism in the Srtaw-covered Mulberry Field[J].Acta Sericologica Sinica,2003,29(2):185-188. |
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| Authors: | LIU Gang TONG Wanhong DU Zhouhe |
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| Abstract: | In order to raise the fertility of soil in the mulberry field, the annual change of soil microorganism in the straw-covered mulberry fields has been studied.The results showed that there are more soil microorgainisms in the straw-covered mulberry fields than that in the uncovered field during the mulberry growing periods, the bacteria increased 150.99% annualy,the ammoniation bacteria 142.24% ,the nitrogen-fixing bacteria 95.47% ,and the fungi the smallest, 56.33 % . The annual change curves of the four soil microbes are single peak curves no matter covered or uncovered, and the peak comes in August or September. |
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| Keywords: | Mulberry fields'soil Straw-covered Microorganism |
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