| 免耕覆盖对土壤微生物量碳的影响 |
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| 引用本文： | 陈英,陈蓓,张军,张仁陟.免耕覆盖对土壤微生物量碳的影响[J].生态环境,2008,17(6). |
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| 作者姓名： | 陈英 陈蓓 张军 张仁陟 |
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| 作者单位： | 甘肃农业大学资源与环境学院,甘肃,兰州,730070 |
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| 基金项目： | 澳大利亚国际农业研究中心(ACIAR)合作项目(SMCN(LWR2)/1999/094
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| 摘 要： | 通过设置在甘肃省定西县李家堡镇甘肃农业大学旱农实验站的用间定位试验,研究连续3年春小麦(Triticum aestivum)-豌豆(Pisum sativum Linn.)双序列轮作后6种不同处理土壤微生物量碳的变化情况,结果表明:免耕条件下表土层土壤微生物量碳总是显著地高于翻耕土壤;秸秆覆盖表土层和亚表层土壤微生物量碳明显高于不覆盖;不同处理对表土层和亚表层土壤微生物量碳的影响差异达极显著;表土层土壤微生物量碳有明显的季节动态变化;土壤微生物量碳随土层加深而递减.
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| 关 键 词： | 免耕 覆盖 土壤微生物最碳 |
Effects of no-tillage on soil microbial biomass carbon |
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| Chen Ying,Chen Bei,Zhang Jun,Zhang Renzhi.Effects of no-tillage on soil microbial biomass carbon[J].Ecology and Environmnet,2008,17(6). |
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| Authors: | Chen Ying Chen Bei Zhang Jun Zhang Renzhi |
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| Institution: | Chen Ying,Chen Bei,Zhang Jun,Zhang Renzhi College of Resource , Environmental Sciences,Gansu Agricultural University,Lanzhou 700070,China |
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| Abstract: | Based on a 3 years experiment located at the station of dry land farming of Gansu Agricultural University in Dingxi, the soil microbial biomass carbon of two rotation phases (the rotation of spring wheat-field pea and the rotation of field pea-spring wheat) under six different tillage patterns were studied. The results showed that soil microbial biomass carbon (MBC) under no-till was higher than that of tillage in soil surface, MBC under straw cover was larger than that under no straw cover, and that the va... |
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| Keywords: | no-till mulching soil microbial biomass carbon |
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