| 土壤水分和养分利用效率几种定义的比较 |
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| 引用本文： | 李韵珠,王凤仙,黄元仿.土壤水分和养分利用效率几种定义的比较[J].土壤通报,2000,31(4):150-155. |
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| 作者姓名： | 李韵珠 王凤仙 黄元仿 |
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| 作者单位： | 中国农业大学资源环境学院,北京100094 |
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| 基金项目： | 国家攀登计划(9219);国家自然科学基金八五重大项目资助(49391600) |
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| 摘 要： | 本文在综述了水分和养分利用效率的各种定义的基础上 ,提出了作者对利用效率的观点 ,并对几种常用的土壤水分和养分利用效率的不同定义作了比较 ,分析了它们的不同内涵 ,并用实例进行了分析 .建议今后在应用中应根据研究目的 ,明确所需用的利用效率的内涵和计算方法 ,并给以恰当的名称
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| 关 键 词： | 土壤水分利用效率 土壤养分利用效率 |
| 文章编号： | 0564-3945(2000)04-0150-06 |
| 修稿时间： | 1999年3月16日 |
Comoarison for various definitions about soil water and nutrient use efficiency |
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| Abstract: | The characteristics of geochemistry of Se and S in soils were reviewed here. The forms of the two elements in soils were similar and their concentrations were related to each other. In addition, the nature of adsorption of Se on soils is in line with that of S. The interaction of Se and S in soils is affected by the contents of the two elements and soil types. However, the mechanism of competition between Se and S needs to be clarified. |
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| Keywords: | Selenium Sulfur Geochemistry Adsorption Desorption Soil |
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