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长期定位施肥对土壤质量影响的因子分析
Authors
周斌,王周琼
Publication date
1 January 2005
Publisher
Abstract
自1991至今,在新疆阜康荒漠生态站进行长期定位施肥试验,对灰漠土上9种不同施肥处理后土壤的15项理化指标进行了测试。结果表明,不同处理后土壤的理化性质差异较大,说明不同施肥方式有各自的优缺点;并用SPSS统计软件,采用因子分析的方法对实验结果进行综合分析:由于前三个主分量的累积贡献率达到88.9%,15个评价指标被划分为三个主分量,第一主分量为影响作物产量的有机质(氮)矿化有关的供氮指标,第二主分量为影响钾的容量指标,第三主分量为土壤的磷素指标。并根据因子综合得分得出:施用N2P2K、N1P1K+秸秆、N1P1K+猪粪对改良灰漠土的效果最好,是本区应大力推广的施肥方式
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Last time updated on 29/11/2016