| 马亮,何继武,刘锋,陈亮亮.土壤盐分离子对浸提液电导率的敏感性分析建模[J].干旱地区农业研究,2011,29(6):143~146 |
| 土壤盐分离子对浸提液电导率的敏感性分析建模 |
| Modeling on sensitivity of soil salt ions to electrical conductivity of soil extract |
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| DOI：10.7606/j.issn.1000-7601.2011.06.27 |
| 中文关键词: 盐分离子 土壤浸提液电导率 敏感因子 主成分分析 灰色关联分析 |
| 英文关键词:salt ion electrical conductivity of soil extract sensitive factor principal component analysis grey re-lational analysis |
| 基金项目:新疆农业大学校前期资助课题(XJAU200921),教育部/新疆农业大学棉花工程研究中心项目；新疆维吾尔自治区高校科研计划项目(XJEDU2010S14) |
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| 中文摘要: |
| 为了研究土壤盐分离子对浸提液电导率的敏感性,首先采用灰色关联分析法对影响土壤浸提液电导率的盐分离子进行初步分析,之后采用缺省因子法与主成分分析法进一步分析检验。结果表明:Cl-、Na+这两种离子对土壤浸提液电导率的变化最为敏感;灰色关联分析法所得结果与基于缺省因子法的主成分分析模型结果基本一致;影响土壤浸提液电导率的7种盐分离子之间存在多重共线性,应用主成分回归方法建立的电导率预测模型能够对实测变量作出合理的模拟。 |
| 英文摘要: |
| A study was conducted on the sensitivity of soil salt ions to the electrical conductivity of soil extract to
promote technical progress in improved alkaline field and salt water movement theory in depth. A preliminary qualitative analysis was first made by applying grey relational analysis in electrical conductivity of soil extract and salt ions，and then by default factor analysis and principal component analysis for further authentication. The results show that: Cl- and Na+ ions are mors sensitive than any other ions to the electrical conductivity of soil extract; the results of qray relational analysis method are the same as the results of principal component analysis model based on the default factor method; the seven salt ions have multicollinearity on electrical conductivity of soil extract，and the conductivity prediction model based on principal component reqression method can make reasonable simulation of v ariables. This provides a new way for further study on salt- water movement theory. |
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