Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Agrestia Sinica》 2017-04
Add to Favorite Get Latest Update

Soil Saline Characteristics of Different Plants Inhabitant on Horqin Grassland

LV Xin-pei;ZHANG Ji-ping;LI Yong-sheng;HE Ao-lei;WANG Suo-min;ZHANG Jin-lin;State Key Laboratory of Grassland Agro-ecosystems,College of Pastoral Agriculture Science and Technology,Lanzhou University;  
Soil salinization threatens agricultural production seriously.So,we are looking forward to providing some improvement methods for salinized land.This study analyzed salinized grassland soil characteristics.In order to explore the long-term adaption of different halophytes communities on Horqin Grassland,we sampled four natural salinized grassland(Suaeda salsa,dwarf Suaeda salsa,Puccinellia tenuiflora and Iris lactea)soils along with alfalfa vegetation soil(improved by Suaeda salsa)in Horqin,Inner Mongolia.We measured soil pH,EC,Na~+,K~+and Ca2~+content.We calculated soil Na~+/K~+ratio and analyzed correlation between ion content and soil EC value by linear regression analysis.The results indicated that S.salsasoil had the highest pH value and soil salinity content,and it had strong adaptability to salinity.P.tenuifloracould live with high Na~+/K~+ratio in soil,and possessed significant selectivity for K~+over Na~+(P 0.05).Utilizing linear regression analysis,we found that Na~+content had the highest correlation with soil EC value,and Na~+was the major factor for causing soil salinization in this region.After planting S.salsa,soil pH and EC value,Na~+and Ca~+content decreased significantly.Therefore,S.salsa was very effective plant on the improvement of saline alkali soil.
【Fund】: 国家自然科学基金项目(31222053 31172256)资助
【CateGory Index】: S812.2
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