【摘要】 采用通径分析方法,对影响黄淮海平原粮食产量的14个驱动因素进行统计分析,利用SPSS软件建立各因素线性回归模型,得出农业用电量、粮食作物播种面积、受灾面积、年平均气温、年底耕地面积5个因素对粮食产量的影响作用较大,进而提出要从提高农业机械化水平、稳定粮食面积、做好自然灾害预防工作、增加有效灌溉面积等多方面入手提高黄淮海平原的粮食产量。更多还原

【Abstract】 The effects of 14 factors on grain yield in the Huang- Huai- Hai Plain were analyzed by path analysis in this paper,and then the linear regression models of them were established by SPSS software. The results showed that the agricultural electricity consumption,sowing area of grain crops,disaster area,average annual temperature and cultivated land area in the end of the year had larger effects on grain yield. It was put forward to increase the grain yield in the Huang- Huai- Hai Plain through improving the level of agricultural mechanization,stabling yield,preventing natural disasters,increasing the effective irrigation area and other aspects.更多还原