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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 the analysis of the fertility indexes of flue-cured tobacco growing area in Luoyang, Henan Province, the analytic hierarchy process was used to determine the weight of evaluation factors, the fuzzy mathematics method was introduced to establish the membership function of each evaluation factor to fertility, and the scores of each fertility evaluation factor were calculated. The index value sum method is used to calculate the comprehensive evaluation value of each evaluation unit, and the soil fertility level is divided according to the size of the comprehensive evaluation value, and the area is calculated by classification. Application of ArcView to Draw Map of Soil Fertility Suitability of Tobacco Field in Luoyang, Henan Province. The results showed that Luoyang, Icheon, and Yiyang belts were the most suitable ones. The most suitable regions were Mengjin, Yanshi and Xin’an, while Ruyang and Luoning belonged to the sub-suitable areas. The paper also established a decision support system for the recommendation of fertilization in tobacco growing. The system has the functions of generating soil fertility maps of large-scale geographical information, analyzing soil fertility resources, providing fertilizer consultation and formula recommendation.