苏中地区县域农田土壤肥力综合评价——以江都市为例  

Integrated evaluation of soil fertility intra-county area in Central Jiangsu——taking Jiangdu City for example

作　　者：潘永敏[1] 郑俊[2] 沈兵[2] 华明[1] 朱伯万[1] 

机构地区：[1]江苏省地质调查研究院,江苏南京210018 [2]江苏省江都市国土资源局,江苏江都225200

出　　处：《地质学刊》2011年第2期170-176,共7页Journal of Geology

基　　金：中国地质调查局基础地质大调查项目(200312300008)

摘　　要：根据模糊数学和多元统计分析原理,利用加乘法原则对苏中地区典型县域(江都市)农田土壤肥力水平进行了定量综合评价。评价结果显示,研究区土壤氮、有机质总体相对较丰富,而磷、钾则较缺乏,与1982年江都市土壤普查数据相比,土壤全氮、有效磷、速效钾、有机质含量有所增加,仅全磷在减少,说明近20年来研究区土壤肥力质量整体有所提高;综合肥力质量以中等和中等以上水平为主,北部综合肥力质量明显好于南部。成土母质、土壤质地、种植结构、施肥管理等是影响评价区土壤肥力质量的主要因素。研究区局部土壤钾、有机质总体含量不足,建议该地区在施用氮肥、钾肥的同时,还应增施有机肥和磷肥。According to fuzzy mathematics and principle of multi-statistics analysis as well as add and multiplication principles,the quantitative comprehensive evaluation of soil fertility intra-county in Jiangdu City showed that the concentrations of nitrogen and organic matters in soil of the research area were relatively enriched,but the contents of phosphorus and potassium were relatively lower.Integrated fertility quality was mainly at the medium level or above.The integrated fertility quality in the northern area was evidently better than that in the southern srea.The main factors that affected the evaluation of soil fertility levels in the study area were considered as soil parent material,soil texture,planting structure and fertilizer management.The comparative analysis suggested that in the last 20 years,the contents of total nitrogen,available phosphorus,rapidly-available potassium and organic matter in soil of the research area were increased,while the content of total phosphorus was decreased.This phenomenon revealed that the overall soil fertility was enhanced and the overall contents of potassium and organic matter in the local research area were insufficient.So,the volume of organic fertilizer and phosphate fertilizer should be increased besides the use of nitrogenous and potash fertilizer.

关 键 词：县域农田 土壤肥力 评价分析 江苏江都 

分 类 号：S158[农业科学—土壤学]