海南省琼中县耕地地力评价研究  

Cultivated land productivity evaluation in Qiongzhong County of Hainan Province

作　　者：张冬明[1,2] 卓奂福 谭丽霞[3] 张文[1,2] 谢良商[1,2] 

机构地区：[1]海南省农业科学院农作物遗传育种重点实验室,海南海口571100 [2]农业部海南耕地保育科学观测试验站,海南海口571100 [3]琼中县农业技术推广服务中心,海南琼中572900

出　　处：《中国土壤与肥料》2014年第1期11-14,41,共5页Soil and Fertilizer Sciences in China

基　　金：农业部测土配方施肥资金补贴项目(琼中县耕地地力评价)

摘　　要：以海南省琼中县为研究区域,选取了地貌类型、成土母质、坡度、土壤养分等12个地力评价因子;在构建耕地地力评价指标体系的基础上,采用模糊数学理论确定指标隶属度,借助层次分析法对评价单元的指标隶属度进行加权求和计算地力综合指数,运用累积曲线法对琼中县耕地地力进行了等级划分。耕地地力共划分为4级:一级地844.37 hm2,占总耕地面积的9.73%;二级地3 306.39 hm2,占总耕地面积的38.12%;三级地3 786.85 hm2,占总耕地面积的43.66%;四级地736.24 hm2,占总耕地面积的8.49%。并针对影响琼中县耕地质量的障碍因子提出了改良建议。This paper take Qiongzhong County of Hainan Province as the study area, 12 tactors were chosen to evatuate cut- tivated lands, including geo-morphological types, parent materials, slope gradient, soil nutrient, etc. The Fuzzy Mathe- matical Approach was used to calculate the membership index, which were then weighted and summed with the Analytic Hi- erarchy Process to evaluate the cultivated land productivity across the county. The results derived from mass curves shown that 8 673.85 hm2 cultivated land could be classified into 4 grades, 1 st grade, 2ed grade, 3rd grade and 4th grade account for 844. 37, 3 306. 39, 3 786. 85 and 736. 24 hm2 respectively. Finally, several soil amelioration measures were suggested ac- cording to the barrier factors in the study area.

关 键 词：琼中县 耕地地力 评价 土壤改良 

分 类 号：S158[农业科学—土壤学]