基于GIS的土壤肥力综合评价研究  

GIS-based Integrated Evaluation of Soil Fertility

作　　者：陈宏金[1] 朱艳[1] 刘小军[1] 马广[2] 梅淑芳[2] 

机构地区：[1]南京农业大学江苏省信息农业高技术研究重点实验室/农业部作物生长调控重点开放实验室,南京210095 [2]金华职业技术学院,浙江金华321017

出　　处：《农机化研究》2008年第1期28-31,共4页Journal of Agricultural Mechanization Research

基　　金：国家863计划项目(2003AA209030)

摘　　要：利用GIS对浙江省金华市现代农业高新园区地图进行数字化,以500×500网格取得表层土样110份,并在室内测试分析了土壤样品的有机质、全氮、全磷、碱解氮、速效磷、速效钾、pH、阳离子交换量等指标;同时,进一步采用层次分析法确定了土壤肥力评价因子的权重,对评价指标建立了相应的隶属函数,通过计算其隶属度,从而求得每个评价单元的土壤肥力综合指标值,并依据综合值确定了土壤肥力等级及其面积,从而为农业高新园区的精确管理奠定了基础。Map digitization of Jinhua Modern Agriculture High-New Garden of Zhejiang Province was carried out with GIS. 110 soil samples from the topsoil were obtained based on 500 m-by-500 m grids, and then soil properties such as organic matter content, total nitrogen content, available nitrogen content, total phosphorus content, available phosphorus content, and available potassium content, pH and CEC were analyzed in the laboratory. AHP was applied to calculate the weights of the evaluation factors, and then the subjection function was developed to calculate the subjection degrees of evaluation factors, and finally the integrated index value of each evaluation unit was calculated. Soil fertility grades and its area were determined according to the, integrated index value. This research lays a foundation for precision management of agriculture high-new garden.

关 键 词：农作物 土壤肥力 理论研究 GIS 层次分析 

分 类 号：S5-061[农业科学—作物学]