摘要
在分析河南省洛阳烤烟种植区各项肥力指标的基础上,采用层次分析法确定评价因素的权重,引入模糊数学方法,建立各评价因子对肥力的隶属函数,计算各个肥力评价因素的评分,最后用指数和法求出各评价单元的综合评价值,根据综合评价值的大小划分土壤肥力等级,并分级统计其面积。应用ArcView绘制河南省洛阳植烟田土壤肥力适宜性状况图。结果表明,洛阳、伊川、宜阳一带为适宜区,最适宜的区域分布在孟津、偃师、新安一带,而汝阳和洛宁一带为次适宜区。文章还建立了植烟田施肥推荐支持决策系统,该系统具有生成大尺度下地理信息土壤肥力分布图、分析土壤肥力资源、提供施肥咨询与配方推荐等功能。
Based on analysis of the physical and chemical properties of soil samples collected from the tobacco-planting regions of Luoyang city,the index system for the suitability evaluation of soil fertility was established.S-shape or parabola-type dependent functions of various evaluation factors were developed according to their effects on the soil fertility,and the function value was also calculated.AHP was applied to judge the weight of each evaluation factor.Then the integrated index values of every evaluation unit were obtained.According to the above-mentioned results,the soil fertility map of tobacco-planting regions in Luoyang was drawn with GIS software ArcView 3.2.The corresponding strategies for the quality enhancement of tobacco leaves were also put forward.In this paper,the tobacco fertilization recommendation support decision system was established.Fertilization recommendation,fertilization consultation and prescription,making of GIS chart,analysis of soil fertility resources have been realized.
出处
《江西农业学报》
CAS
2010年第5期68-72,共5页
Acta Agriculturae Jiangxi
关键词
GIS
烤烟
土壤肥力
评价
施肥推荐
GIS
Tobacco
Evaluation factors
Soil fertility
Fertilization recommendation
