摘要
采用层次分析法和权重对比法对渭北台塬区新增耕地土壤肥力的权重进行了分配,并对该区域土壤肥力做了进一步评价,提出了影响新增耕地土壤肥力的最大限制因素。结果表明：渭北台塬区澄城县新增耕地土壤肥力权重指标为p H值0.22,电导率0.03,有机质0.22,全氮0.22,有效磷0.15,速效钾0.10,质地0.06。澄城县土地整治项目新增耕地土壤肥力分值分布在38-66之间,平均值为54分,研究区总面积的90%为新增耕地,其土壤肥力综合分值在45-65分,有一半的新增耕地的土壤肥力分值在50-60之间,分值最高和最低的面积约占到5%和3%。造成土壤肥力指数低的主要因素是土壤有效磷（AP）、土壤有机质（SOM）、土壤速效钾（AK）、土壤全氮（TN）4项指标含量较低,其影响程度为AP〉SOM〉AK〉TN。运用层次分析法与权重对比法相结合的方法在土壤肥力评价上取得了较好的效果,具有较好的应用前景。
In this paper,the new farmland soil fertility index after the wild grassland reclamation was studied using the method of the analytic hierarchy process（ AHP） and weight comparison method,the weight of new farmland soil fertility index was distributed and evaluated,soil fertility index in this area,and the maximum limit factors of new farmland soil fertility was presented in Weibei Plateau. The results showed that： The soil fertility weight index of new farmland were that p H was 0. 22,conductivity was 0. 03,SOM was 0. 22,TN was 0. 22,AP was 0. 15,AK was 0. 10,texture was 0. 06 in Chengcheng county,Weibei Plateau. The soil fertility comprehensive index of new farmland was in the distribution of the scores between 38 and 66 in Chengcheng county,and the average value was 54. The comprehensive scores of the soil fertility of 90% the area were between45 and 65,and the half area of the new farmland soil fertility index was 50 to 60. The areas in the highest score and the lowest score were accounted for 5% and 3%,respectively. The main factors that caused the low soil fertility index were the low contents of AP,SOM,AK,TN,the influence was AP SOM AK TN. Combining the method of AHP and weight comparison method was a good application in the soil fertility comprehensive evaluation.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2016年第4期39-43,共5页
Soil and Fertilizer Sciences in China
基金
国家科技支撑计划“山地丘陵区空心村整治关键技术集成示范”(2014BAL01B03)
关键词
层次分析法
新增耕地
评价研究
限制因子
渭北台塬区
analytic hierarchy process
new farmland
evaluation research
limiting factor
Weibei plateau
