• ISSN 1008-505X
  • CN 11-3996/S
廖铁军, 黄云, 邹宗杰, 邓义林. 青海羊厩肥质量数值分类研究[J]. 植物营养与肥料学报, 1996, 2(2): 169-174. DOI: 10.11674/zwyf.1996.0211
引用本文: 廖铁军, 黄云, 邹宗杰, 邓义林. 青海羊厩肥质量数值分类研究[J]. 植物营养与肥料学报, 1996, 2(2): 169-174. DOI: 10.11674/zwyf.1996.0211
Liao Tiejun Huang Yun Zhou Zhongjie Deng Yilin, . STUDY ON QUALITY NUMERICAL CLASSIFICATION OF SHEEPFOLD MANURE IN QINGHAI PROVINCE[J]. Journal of Plant Nutrition and Fertilizers, 1996, 2(2): 169-174. DOI: 10.11674/zwyf.1996.0211
Citation: Liao Tiejun Huang Yun Zhou Zhongjie Deng Yilin, . STUDY ON QUALITY NUMERICAL CLASSIFICATION OF SHEEPFOLD MANURE IN QINGHAI PROVINCE[J]. Journal of Plant Nutrition and Fertilizers, 1996, 2(2): 169-174. DOI: 10.11674/zwyf.1996.0211

青海羊厩肥质量数值分类研究

STUDY ON QUALITY NUMERICAL CLASSIFICATION OF SHEEPFOLD MANURE IN QINGHAI PROVINCE

  • 摘要: 对青海东部农区6县21个羊厩肥样品采用主成份分析、模糊聚类、逐步判别分析回判的方法进行质量分类研究。结果表明,羊厩肥中有机质与全氮、全磷含量呈显著正相关,而与全钾含量成显著负相关。有机质与全钾含量的高低是决定羊厩肥质量的主要因子。依其质量特征,可将青海羊厩肥划分为三类,即一般型、高质低钾型和中质高钾型。各类的判别函数分别为: Y1=-0.6466-34.0838+0.1418x1-10.9872x3+3.6040x4 Y2=-1.6582-64.0458+0.2408x1-12.8819x3+4.2024x4 Y3=-1.2528-76.9947+0.2083x1-16.3417x3+5.4096x4

     

    Abstract: Study on quality feature and numerical classification for 21 samples of sheepfold manure in six counties of eastern Qinghai province were carried out by means of a principal component analysis, fuzz cluster analysis and stepwise discriminant analysis. There are significantly positive correlation between the organic matter content and total nitrogen, total phosphorus content, and the negative correlation between the organic matter content and total potassium. The quality of sheepfold manure was influenced by organic matter and total potassium content mainly. Based on the principal component value of quality index, the sheepfold manure were grouped into three types, which were general, high organic matter content-low total potassium conntent, middle organic matter content-high total potassium content. The stepwise discriminant analysis has proved that this classification was correct and trustworthy.

     

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