草业科学2016，Vol.33Issue(5)：990-995,6.DOI:10.11829/j.issn.1001-0629.2015-0408
苜蓿、小麦、玉米经济效益比较
Comparison of economic benefit of alfalfa,wheat and maize---A case study in Gansu Province
摘要
Abstract
Based on the investigation in 5 counties in Gansu Province,the inputs and outputs,factorial outputs elasticity and marginal outputs of alfalfa (Medicago sativa),wheat(Triticum aestivum)and maize(Zea mays) at household level were analysed and compared.The results showed that alfalfa had the least inputs,maize and alfalfa had the highest and lowest outputs,respectively.At the moment,wheat and maize were in the stage of decreasing returns to scale,on the contrary,alfalfa was in the stage of increasing returns to scale indicating al-falfa industry had potential improvement.All factors marginal production of wheat and maize closed to zero,in contrast,marginal production of alfalfa were far greater than zero,indicating improvement of seed and fertilizer inputs can increase alfalfa production.关键词
苜蓿/投入产出/C-D生产函数/要素边际产量Key words
alfalfa/output-input/C-D production function/factorial marginal production分类
农业科技引用本文复制引用
刘会芳,南志标,唐增,王丽佳..苜蓿、小麦、玉米经济效益比较[J].草业科学,2016,33(5):990-995,6.基金项目
国家牧草产业技术体系项目(CARS35-08) （CARS35-08）
