【摘要】 运用灰色关联分析方法,对四川省1996~2003年粮食单产的主要影响因素进行分析,结果表明:单位面积化肥投入量、有效灌溉面积比例、单位面积财政支农支出和未受灾面积比例是影响四川省粮食单产的4个重要因子,其次是单位面积机械总动力,第3是单位面积地膜用量。更多还原

【Abstract】 The grey related theory was applied in the analysis of main influence factors of unit area grain yield in Sichuan province.The analysis showed that the quantity of pure fertilizer per unit area,the rate of valid irrigated area,the agricultural financial expenditure per unit and the non-disaster area were the most important factors afecting unit area grain yield and then total power of agricultural machine per unit area and the quantity of the plastic membrane per unit area.更多还原