中文摘要：

农业生产要素的最优投入规模取决于要素的边际产出和市场价值,但由于缺乏足够激励或不合理的政策限制,要素投入和资源配置难以得到优化。研究表明,资本、劳动、土地等要素在农业生产中的数量变化难以带来产出的显著变化,需要在破解农户融资难题、完善土地产权制度、培育新型经营主体的基础上,优化要素配置方式,发挥整体协同功能,才能从根本上改善农业生产绩效。

英文摘要：

The best arrangement of agricultural factors is decided by its marginal production and market value.However,due to lack of incentive and excessive policy intervention,the arrangement of agricultural factors is hard to be optimized.The study reveals that there is hardly any changes in the output growth while capital,labor or land resource changes.It suggests that the allocation of factors and synergistic functions can be optimized only on the basis of solving the financing problem,reforming land property institution,and cultivating new business entities.