现代密集型农业生产模式下农田土壤肥力质量演化趋势——以关中灌区澄城县为例  

Modern intensive agriculture production mode in farmland soil fertility quality evolution trend——A case study of Chengcheng county in Guanzhong irrigation area

作　　者：胡明[1] 

机构地区：[1]渭南师范学院化学与生命科学学院/陕西省多河流湿地生态环境重点实验室,陕西渭南714000

出　　处：《广东农业科学》2012年第16期87-90,共4页Guangdong Agricultural Sciences

基　　金：国家自然科学基金(41171061);陕西省科技计划项目(2010JM5014);渭南市科技计划项目(2011KYJ-7)

摘　　要：以1982年全国土壤普查材料为背景值,对2010年关中灌区农田土壤养分状况进行系统研究,分析了澄城县土壤养分的变异趋势。结果表明,关中灌区土壤有机质、全氮、碱解氮、有效磷含量均比1982年土壤普查时有较大程度的提高,速效钾整体呈现出下降趋势。当地农业用地土壤养分的提高与化肥投入量和秸秆还田等现代化农业耕作方式有关。This article based on the 1982 national soil survey data as a backdrop, analyzed the variation tendency of soil nutrients in farmland in Guanzhong irrigation district. The results showed the contents of organic matter, total nitrogen, alkali-hydroly zable nitrogen and available phosphorus in Guanzhong irrigation soil greatly increase compared with the date of in 1982, Available potassium the whole present a decline. The agricultural land soil nutrient improvement about with fertilizer inputs and straw returned modern agricultural cultivation way.

关 键 词：农田 土壤肥力 关中灌区 

分 类 号：S158[农业科学—土壤学]