旱作条件下海拔梯度对土壤理化性质的影响  

Effects of Altitude Gradient on Soil Physical and Chemical Properties under Dryland Farming Conditions

作　　者：吴大方 黄明镜 王国芳[1] 张吴平 WU Dafang;HUANG Mingjing;WANG Guofang;ZHANG Wuping(College of Resources and Environment,Shanxi Agricultural University,Taigu 030801,China;Shanxi Institute of Organic Dryland Farming,Shanxi Agricultural University,Taiyuan 030031,China;College of Software,Shanxi Agricultural University,Taiyuan 030801,China)

机构地区：[1]山西农业大学资源环境学院,山西太谷030801 [2]山西农业大学山西有机旱作农业研究院,山西太原030031 [3]山西农业大学软件学院,山西太谷030801

出　　处：《山西农业科学》2021年第5期603-607,共5页Journal of Shanxi Agricultural Sciences

基　　金：山西省重点研发计划重点项目(201703D211002-2);山西省科技攻关项目(20130311008-5)。

摘　　要：为探究山西省旱作条件下耕地土壤理化性质与海拔梯度之间的关系,通过实地采样和室内分析测定,采用回归分析和显著性检验的统计方法,对晋南地区不同海拔梯度的耕地土壤理化性质进行了分析研究。结果表明,0~10 cm和10~20 cm有机质含量随着海拔升高呈上升趋势,且呈极显著正相关,相关系数分别为0.737和0.669;0~10 cm和10~20 cm全氮含量随着海拔升高呈下降趋势,且呈极显著负相关,相关系数分别为-0.873和-0.608;0~10 cm和10~20 cm的pH值和容重与海拔相关性均不显著。研究结果可为山西省有机旱作农业在海拔梯度较复杂地区的发展提供理论基础。To explore the relationship between the physical and chemical properties of cultivated soil and the altitude gradient under dry farming conditions in Shanxi,through field sampling,experimental determination,regression analysis and statistical methods of significance testing,the physical and chemical properties of cultivated soil in different altitude gradients in the south of Shanxi were analyzed to explore the relationship between the physical and chemical properties of cultivated soil and altitude.The results showed that the surface organic matter of 0-10 cm and 10-20 cm cultivated land had a very significant positive correlation with altitude,and the correlation coefficients were 0.737 and 0.669,respectively.0-10 cm and 10-20 cm total nitrogen had a very significant negative correlation with altitude,the correlation coefficient were-0.873 and-0.608,respectively.0-10 cm and 10-20 cm pH and bulk density did not change significantly with increasing altitude.The research results can provide a theoretical basis for the development of organic dry farming in areas with more complex altitude gradients in Shanxi.

关 键 词：旱作条件 海拔 土壤理化性质 晋南地区 

分 类 号：S153[农业科学—土壤学]