| 河南三种土壤阳离子交换量相关性及预测模型研究 |
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| 引用本文： | 张水清,黄绍敏,郭斗斗.河南三种土壤阳离子交换量相关性及预测模型研究[J].土壤通报,2011(3):627-631. |
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| 作者姓名： | 张水清 黄绍敏 郭斗斗 |
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| 作者单位： | 河南省农业科学院植物营养与资源环境研究所; |
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| 基金项目： | 国家“十一五”科技支撑计划沃土工程项目(2006BAD25B06); 国家科技基础条件平台建设项目(SF2007-5); 河南省重大公益性科研项目(081100911500)资助 |
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| 摘 要： | 土壤阳离子交换量是一项重要的土壤理化性质,它是衡量土壤肥力和作物养分有效性的一个重要指标。通过对河南3种土壤1177个数据的相关性及回归分析来研究阳离子交换量与土壤有机质、pH值、粘粒含量、粉粒含量和砂粒含量的关系。结果表明:(1)对于阳离子交换量来说,砂姜黑土>水稻土>褐土;3种土壤的上层土>下层土;3种土壤的阳离子交换量比第二次土壤普查分别降低15.7%,12.7%,6.5%;(2)对与砂姜黑土和褐土来说,其阳离子交换量与pH值和0.02~2 mm砂粒含量成显著负相关,褐土与粘粒含量成显著正相关;对于水稻土来说,其阳离子交换量与有机质含量和粘粒含量成显著正相关,与砂粒含量成显著负相关;(3)利用这些数据做出的这三个土壤类型的6个回归模型是有科学依据的。总的来说,土壤有机质、pH值、粘粒含量与砂粒含量与CEC有着紧密联系,但还有其他因素影响着预测模型的准确性。
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| 关 键 词： | 阳离子交换量 pH值 有机质 相关性 预测 |
The Correlations and Prediction models of Cation Exchange Capacity in Three Soils in Henan |
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| ZHANG Shui-qing,HUANG Shao-min,GUO Dou-dou.The Correlations and Prediction models of Cation Exchange Capacity in Three Soils in Henan[J].Chinese Journal of Soil Science,2011(3):627-631. |
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| Authors: | ZHANG Shui-qing HUANG Shao-min GUO Dou-dou |
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| Institution: | ZHANG Shui-qing,HUANG Shao-min,GUO Dou-dou(Institute of Plant Nutrition and Environmental Resources Science,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China) |
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| Abstract: | Cation-exchange capacity(CEC) is an important soil property in describing soil fertilization and nutrient availability for plant growth.Measurements of CEC,however,are often not available or have been measured using different analytical methods.The need,therefore,exists to develop alternative procedures to predict CEC from accessory soil properties.In this study,1177 soil samples,correlation and regression analysis were used to examine the relationships between CEC and soil organic matter(SOM),pH value,clay... |
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| Keywords: | Cation exchange capacity pH value Organic matter Correlation Prediction |
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