Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Research of Soil and Water Conservation》 2016-04
Add to Favorite Get Latest Update

Study on Dynamic Change of Ion Contents of Saline-Alkali Soil During Different Reed Growth Stages

ZHANG Lu;HAN Jichang;MA Zenghui;CHEN Tianqing;SHI Chendi;WEI Jing;Shaanxi Land Construction Group,Shaanxi LCG Land Project Technology Institute,Key Laboratory of Degraded and Unused Land Consolidation Engineering the Ministry of Land and Resources of China;  
It provides a reference for the application of biological measures to control saline soils to study the dynamic change of ion contents of saline-alkali soil during different reed growth stages.Using the saline-alkali soil in Dingbian County,Shaanxi Province to pack the cement column device[0.8m(φ)× 0.98m(h),20numbers],and planting reeds in 10 columns in a row,not planting any plants in 10 columns in another row,using soil auger to collect 0—20cm soil sample at each reed growth stage in every column,then salinealkali soil indexes of potential of hydrogen,electrical conductivity,Ca~(2+),Mg~(2+),K~+,Na~+,CO_3~(2-),HCO_3~-,Cl~-,SO_4~(2-) content were measured during reed seedling,leafing,flowering,maturity and withering period,respecitvely.The results showed that reed could make that the pH lower 0.65 units,the electrical conductivity overall declined 756.55μS/cm,Ca~(2+)content decreased 138.70mg/kg,SO_4~(2-)content decreased 115.35mg/kg,Cl-content decreased 57.76mg/kg,HCO-3content decreased 57.76mg/kg,Na+content decreased55.58mg/kg,CO_3~(2-)content decreased 31.66 mg/kg,Mg~(2+)content decreased 26.93 mg/kg,K+content decreased 12.65mg/kg during throughout growing stage.The potential of hydrogen,electrical conductivity,Ca~(2+),Mg~(2+),K+,Na+,CO_3~(2-),HCO_3~-,Cl~-,SO_4~(2-) contents of saline-alkali soil with planting reeds decreased more than not planting reeds.The reed capability to enrich salinity might exist,to a certain extent,and can improve the situation of soil salinization in Dingbian County,Shaanxi Province.
【Fund】: 陕西省自然科学基础研究计划“土地整治后农用地质量和生态环境在线监测方法研究”(2014JM5213)
【CateGory Index】: S156.4;S564.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved