【摘要】 为了稳定和扩大玉米产量,保证中国粮食安全和能源安全,分析了有效播种面积、单位播种面积的费用要素投入等影响玉米生产的主要因素。单位播种面积的费用要素投入包括化肥、农家肥、农业机械、排灌、农药、以及劳动力投入。采用计量经济学的方法,建立了玉米的生产函数模型。用该模型比较了近20年来各因素对玉米产量的贡献率。结果表明:有效播种面积和化肥投入费用是玉米增产最主要的贡献因素,而技术进步等其他因素目前贡献率比较小。更多还原

【Abstract】 The main factors affecting maize production,such as the effective planted areas and the unit area input cost factors,were analyzed to develop methods to raise the maize yield to ensure food and energy security in China.The unit area input cost factors included the chemical fertilizer,farm fertilizer,pesticide,irrigation and drainage,machine,and labor input.The product model used a maize econometric function model to analyze the effects of the main factors on the maize production for the past 20 years.The results show that the planted areas and fertilizer input are the most important factors,whereas other factors including technical progress have less effect though they can not be ignored.更多还原