| 不同种植年限苜蓿地土壤微生物区系及商值(qMB,qCO2) |
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| 引用本文： | 蒋平安,罗明,蒋永衡,杨玉海,艾尔肯.不同种植年限苜蓿地土壤微生物区系及商值(qMB,qCO2)[J].干旱区地理,2006,29(1):115-119. |
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| 作者姓名： | 蒋平安 罗明 蒋永衡 杨玉海 艾尔肯 |
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| 作者单位： | 1. 新疆农业大学资源与环境学院,新疆,乌鲁术齐,831100
2. 新疆农业职业技术学院,新疆,昌吉,831100 |
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| 基金项目： | 新疆科技厅资助项目
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自治区土壤学重点学科基金 |
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| 摘 要： | 通过实验,研究了种植年限不同的3种苜蓿地0～10cm和10～20cm土层的土壤微生物数量、微生物量碳、微生物量氮、基础呼吸强度、代谢商和微生物生物量商(qMB,qCO2)。结果表明,微生物数量在不同年限苜蓿地之间有不同的变化。微生物量碳、微生物量氮指标显示土壤质量4年生苜蓿地>1年生苜蓿地>2年生苜蓿地,基础呼吸强度和代谢商指标显示土壤质量4年生苜蓿地>2年生苜蓿地>1年生苜蓿地。在不施肥的条件下,4年生苜蓿地土壤质量最好,表明苜蓿种植时间越长,对土壤肥力影响越大。
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| 关 键 词： | 苜蓿 土壤微生物 微生物量碳 氮微生物商值 土壤质量 |
| 文章编号： | 1000-6060（2006）01-0005-05 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2005-12-09 |
Soil microbial floras and their qMB and qCO2 values in the fields of different-year-aged Medicago sativa |
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| JIANG Ping-an,LUO Ming,JIANG Yong-heng,YANG Yu-hai,AI Er-keng.Soil microbial floras and their qMB and qCO2 values in the fields of different-year-aged Medicago sativa[J].Arid Land Geography,2006,29(1):115-119. |
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| Authors: | JIANG Ping-an LUO Ming JIANG Yong-heng YANG Yu-hai AI Er-keng |
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| Abstract: | After carrying out an experiment,the qMB and qCO values,quantity,biomass-C,biomass-N and respiration strength of soil microorganisms in the fields of different-year-aged Medicago sativa at different soil depths(0~10cm and 10~20cm) are researched.The results show that the microbial quantities are different in the fields of different-year-aged Medicago sativa.The biomass-C and biomass-N of soil microorganisms reveal that the soil quality is in an order of the field of 4-year-aged Medicago sativa > field of 1-year-aged Medicago sativa > field of 2-year-aged Medicago sativa,and the respiration strength and qMB and qCO values of soil microorganisms reveal that the soil quality is in an order of the field of 4-year-aged Medicago sativa > field of 2-year-aged Medicago sativa > field of 1-year-aged Medicago sativa.Under the conditions without fertilization,the soil quality in the field of 4-year-aged Medicago sativa is the highest,which reveals that the soil fertility in the fields of Medicago sativa is increased with prolonging the planted time of Medicago sativa. |
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| Keywords: | Medicago sativa soil microorganism biomass-C biomass-N microbial quotient soil quality |
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