【摘要】 在建立因子分析模型基础上,本文对中国粮食单产和播种面积的影响因子进行了实证分析。研究结果表明,在粮食单产方面,科技进步水平因子具有较高载荷,对粮食单产的影响力最大,其次是物质投入因子、环境与气候因子和政策因子。对中国粮食播种面积影响最大的因子是资源及科技因子,其次是比较效益及政策因子。上述研究的政策含义是,为稳定和提高中国粮食综合生产能力,要保护耕地资源,稳住粮食播种面积,提高科技对粮食生产的支撑能力,加大粮食生产的投入力度,建立健全粮食生产支撑体系。更多还原

【Abstract】 A Factor Analysis Model is constructed to analyze variables influencing yield and sown area in grain production. It is revealed that higher grain yield can be best explained by adoption of advanced technologies, followed by material inputs, environment and climate, and policy. In terms of area sown under grain, resource availability and technology play a leading role, followed by comparative benefits and policy. Policy implications are discussed更多还原