摘要
在分析平顶山市烟区各项肥力因子的基础上,对该烟区土壤肥力适宜性进行了综合评价.根据S型或抛物线型作物效应曲线建立各项评价指标的隶属函数,采用层次分析法确定评价因子权重,从而求得每个评价单元的综合指标值.使用m apG IS地理信息系统软件作为空间数据管理工具,建立了该烟区土壤综合肥力评价图.研究表明,研究区内的汝州、郏县、宝丰的北部和叶县的东部一带各土壤肥力因子含量适中,且搭配比例适当,综合肥力水平为适宜以上地区;而鲁山、叶县的西部、宝丰的南部一带虽然烟区土壤中有机质含量和pH值都为适中,但全氮和速效磷含量都偏低,影响了该烟区土壤综合肥力的发挥,综合评价定为次适宜区,该烟区应增加氮肥和速效磷的施用,充分发挥土壤肥力的综合效应.
Based on analysis of the physical and chemical properties of soil samples collected from Pingdingshan tobacco planting regions, the index system of soil fertility suitability of tobacco was established. S-type or parabola-type dependence functions were developed according to their effect on tobacco crop and the function value was also calculated. AHP was applied to judge the weight of each evaluation factor. Then the integrated index vaules for every evaluation unit were obtained. Based on all the ed to total N and olsen P. And corresponding strategies were also put forward.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2008年第5期545-549,共5页
Journal of Henan Agricultural University
基金
国家烟草专卖局重点资助项目(110200401021)
关键词
GIS
烤烟
评价因子
权重
土壤肥力适宜性
GIS
tobacco
evaluation factors
weight
soil fertility suitability
