Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry

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Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry

更新时间：2024-11-07

- Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry
- Issue 1, Pages: 99-102(2006)
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- Published：2006
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Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry[J]. 2006, (1): 99-102.
DOI：

Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry[J]. 2006, (1): 99-102. DOI：

摘要

采用田间采样及室内培养方法，对内蒙古武川县耕地、退耕还灌地和放牧草原3种类型土地土壤微生物各类群的数量分布和层化比率进行了研究。结果表明：在土壤耕作层（0～30cm）土壤微生物数量呈逐层下降趋势，3种类型土地的土壤微生物总数相差不大，3种类型土地土壤微生物层化比率存在明显差异。同时提出了土壤微生物层化比率的概念，并认为土壤微生物层化比率可能是一个比较好的指示动态土壤质量（土壤演替方向）的指标，当一个区域土壤微生物层化比率大于2时，土地一般不会发生退化现象。在研究的3块实验区域中，耕地存在较高的退化风险．退耕还灌地正处于逐步恢复的阶段，放牧草原依然存在逐步退化的趋势。

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Distribution Character of Soil Microbial Numbers and Soil Microbial Stratification Ratio at Crossing Belt (Wuchuan County) of Agriculture and Animal Husbandry

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