湖北农业科学
湖北農業科學
호북농업과학
Hubei Agricultural Sciences
2015年
17期
4380-4384
,共5页
耕地追加质量%耕地标准系数%C-D函数%政府购买公共服务%湖北省
耕地追加質量%耕地標準繫數%C-D函數%政府購買公共服務%湖北省
경지추가질량%경지표준계수%C-D함수%정부구매공공복무%호북성
additional farmland quality%cultivated land standard coefficient%C-D function%government’s purchase of public service%Hubei province
通过计算湖北省耕地标准系数评价耕地综合质量的动态变化，进而构建C-D生产函数模型，实证分析了耕地追加质量中各投入因素对粮食单产的贡献率。研究表明，化肥与地膜对粮食单产水平提高的正向效益呈边际递减趋势，而农业机械的使用对粮食单产存在边际报酬递增效应。各级政府应通过购买化肥、地膜、农机等农技推广公共服务，提高耕地追加质量，实现粮食稳产高产。
通過計算湖北省耕地標準繫數評價耕地綜閤質量的動態變化，進而構建C-D生產函數模型，實證分析瞭耕地追加質量中各投入因素對糧食單產的貢獻率。研究錶明，化肥與地膜對糧食單產水平提高的正嚮效益呈邊際遞減趨勢，而農業機械的使用對糧食單產存在邊際報酬遞增效應。各級政府應通過購買化肥、地膜、農機等農技推廣公共服務，提高耕地追加質量，實現糧食穩產高產。
통과계산호북성경지표준계수평개경지종합질량적동태변화，진이구건C-D생산함수모형，실증분석료경지추가질량중각투입인소대양식단산적공헌솔。연구표명，화비여지막대양식단산수평제고적정향효익정변제체감추세，이농업궤계적사용대양식단산존재변제보수체증효응。각급정부응통과구매화비、지막、농궤등농기추엄공공복무，제고경지추가질량，실현양식은산고산。
By calculating the “cultivated land standard coefficient” to explain the dynamic changes of comprehensive quality of cultivated land in Hubei province, and then build C-D function model to analyze each factor’s effect on grain yield in the process of extra quality improvement of cultivated land. The result indicates that the use of fertilizer and plastic film has di-minishing marginal effects on the growth of grain yield while the use of agricultural machinery has increasing marginal effects on the growth of grain yield. Therefore, government should purchase public service of agricultural technology, such as fertiliz-er, plastic film, agricultural machinery for the purpose of extra quality improvement of cultivated land and high grain yield.
