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采用田间定点取样、定期播种与收获的方法 ,研究稻米品质与四川盆地区主要土壤生态因子之间的关系 ,结果表明 :①稻米品质各性状及综合品质不同程度地受海拔高度、质地、养分含量等因子的影响 ,不同土壤生态因子对稻米各品质性状及综合品质的影响不一致 ,利用偏相关分析较单相关更能准确地反映两个变量的线性程度 ;②从单相关分析结果来看 ,海拔高度、物理性粘粒、粗粉粒、有机质、有效铜、有效铁、有效锰含量是影响稻米品质的主要土壤生态因子 ;从偏相关分析结果来看 ,海拔高度、耕层厚度、有机质、全氮、碱解氮、有效铜含量是影响稻米品质的主要土壤生态因子。
The results showed that: ①The traits of rice quality and its comprehensive quality were affected to varying degrees by the altitude, texture and nutrient content The effects of different soil ecological factors on the quality traits and the comprehensive quality of rice are inconsistent. Partial correlation analysis can reflect the linearity of the two variables more accurately than the single correlation. (2) From the results of single correlation analysis, Height, physical clay, coarse grain, organic matter, available copper, available iron and available manganese content are the main soil ecological factors that affect the quality of rice. From the partial correlation analysis, altitude, thickness of topsoil, organic matter, total Nitrogen, alkaline hydrolysis of nitrogen, available copper content is the main soil ecological factors that affect rice quality.