地表起伏度对耕地生产潜力的影响  

Influence of Relief Degree of Land Surface on the Potential of Cultivated Land Production

作　　者：张迅 司泽宽 彭熙 

机构地区：[1]贵州省土地整理中心,贵州贵阳550001 [2]贵州省山地资源研究所,贵州贵阳550001

出　　处：《贵州农业科学》2013年第10期197-199,共3页Guizhou Agricultural Sciences

基　　金：贵州省优秀科技教育人才省长专项资金项目[黔省专合字(2012)21];贵州省财政厅地表起伏度项目

摘　　要：为探索地表起伏状况对农业生产的影响,以全国各省(市、区)1∶200 000DEM数据为基础,计算地表起伏度值,研究不同地表起伏度地区主要作物的成本与利润率,揭示耕地生产潜力的影响因素。结果表明:1)全国地表起伏最大的区域为西南地区,最平整的区域为东部发达省份;2)地表起伏度标准值每增加10%,粮食单产减少0.12t/hm2,人工成本增加约12元/667m2,总成本增加18元/667m2,成本利润率降低5%;3)地表起伏度主要通过影响耕地面积、耕地生产条件、农业灾害、生产成本与产出等影响耕地生产潜力。In order to study the influence of surface relief of the research on agricultural production,the author studied the cost and profit rate of main crops,influence factors of production potential of cultivated land based on the provinces(city,area)1∶200 000DEM data as the foundation of surface waviness value of different surface relief.The results show that:1)the largest area of surface undulation was in the southwest area,and the flat area was in the eastern developed provinces;2)surface roughness standard value for each additional 10%,the grain yield reduced 0.12t/hm2,surface roughness standard value for each additional 10%,artificial cost per 667m2 increased by approximately 12Yuan,18Yuan of the total cost,profit rate of cost reduced by 5%;3)surface waviness affected production potential of cultivated land mainly by influencing cultivated land area,arable land production conditions,agricultural disaster,several aspects of production cost and output.

关 键 词：地表起伏度 耕地生产潜力 生产成本 

分 类 号：S159[农业科学—土壤学]