苜蓿与竞争农作物投入产出的比较

本研究以对牧草种植区内苜蓿（Medicago sativa）、小麦（Triticum aestivum）、玉米（Zea mays）和马铃薯（Solanum tuberosum）生产住户的实地调研数据为基础，对苜蓿及竞争农作物的投入产出进行分析。结果表明，种植苜蓿有良好的经济效益，且其潜在效益很大。本研究还通过建立苜蓿、小麦和玉米3种作物的产出模型，对其要素弹性进行分析，得出影响苜蓿及竞争农作物生产的显著要素，并提出意见和建议。

Input and output comparison between alfalfa and its competitive crops

Based on the survey data of farmers who planted alfalfa, wheat, corn and potato in forage planting areas, an analysis of input and output of alfalfa and its competitive crops was made in this study. The results indicated that, alfalfa could bring a good economic benefit to farmers, and its potential benefit was also great. The significant factors that influenced the production of alfalfa and crops were put forward, through making the input output models of alfalfa, wheat and corn, and analyzing their elasticity of factors. Besides, some comments and suggestions were put forward in this study.