A method of fertility evaluation for paddy soils: I. First approximation: Chemical potentiality grading
作者： Kazutake Kyuma , Keizaburo Kawaguchi
DOI: 10.1080/00380768.1973.10432513
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摘要: In an effort to work out a method for soil fertility evaluation and grading, principal component analysis was applied 23 items of laboratory data 41 Malayan paddy samples. As many th...
sci-hub.se 参考文章(3)
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