四川省粮食生产影响因素分析

Analysis of Influencing Factors of Grain Production in Sichuan Province

基于四川省1990年~2020年粮食生产的相关数据,利用主成分分析法对影响四川省粮食生产的8个指标进行分析。结果表明:①第一主成分的方差贡献率为75.809%,包含农村用电量、农业机械总动力以及耕地灌溉面积三个指标,主要体现了农业生产建设投入方面的作用;②第二主成分的方差贡献率为12.659%,包含年末实有耕地面积和粮食作物播种面积,体现了粮食播种面积的影响。通过对四川省粮食生产影响因素的分析,对四川省粮食生产的技术创新和政策制定提供支持。

Based on the relevant data of grain production in Sichuan province from 1990 to 2020,eight indicators affecting grain production in Sichuan province were analyzed by using principal component analysis.The results show that:①the variance contribution rate of the first principal component is 75.809%,including rural electricity consumption,total power of agricultural machinery and irrigated area of farmland,which mainly reflects the role of agricultural production and construction input.②The variance contribution rate of the second principal component is 12.659%,which includes the actual cultivated land area and sown area of grain crops at the end of the year,reflecting the impact of sown area of grain.By analyzing the influencing factors of grain production in Sichuan province,this paper provides support for technological innovation and policy making of grain production in Sichuan province.