山西省粮食增产影响因素的统计分析

Statistical Analysis of Factors Affecting Grain Production in Shanxi Province

运用多元统计分析中的主成分分析的方法对山西省建国以来粮食生产的发展变化趋势以及粮食增产的主要影响因素的贡献大小进行了分析,确定单产对粮食增产的贡献最大,其次是有效灌溉面积,而化肥等生产要素的投入在不同时期的贡献不同。在上述分析的基础上提出了山西粮食生产今后发展方向是:稳定粮食播种面积;增加科技投入,提高粮食单产;有机与无机肥的配施,提高化肥增产效力;加强农业基础设施建设,发展节水农业,提高有效灌溉面积率。

Since utilized in the muhi-dimensional statistical analysis the principal components analysis method to found a nation the major effect factor contribution size to Shanxi Province which the grain production development change tendency as well as the grain have increased production to carry on the analysis, the definite per unit area yield the contribution which increases production to the grain is biggest, next is the effective irrigated area, but element of production and so on chemical fertilizer invesUnents are different in the different time contribution. Proposed in the above analysis foundation the Shanxi grain production next development direction will be： Stable grain sown area; q]ae increase science and technology invesUnent, enhances the grain per unit area yield; executes, enhances the chemical fertilizer production Organic and inorganic fat matches increase potency; The enhancement agriculture infrastructure construction, the development saving water agriculture, enhances the effective irrigated area rate.