银北地区硫磺改良盐碱土初探  

Primary study on function of sulfur on saline-alkali soil in Yinbei Area

作　　者：刘刚[1] 李新平[1] 张永宏 吕家珑[1] 魏迎春[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100 [2]宁夏农科院土肥所,宁夏银川750001

出　　处：《干旱地区农业研究》2008年第4期79-82,共4页Agricultural Research in the Arid Areas

基　　金：日本Cosmo石油株式会社资助

摘　　要：采用盆栽试验方法,以石膏为对照,探讨硫磺对宁夏平罗盐碱土的改良效果。结果表明:施用硫磺能有效降低土壤pH值,增大EC值;土壤中Ca2+、Mg2+和SO42-含量增加明显,交换性Na+有一定程度的降低;玉米生物量增加,其中低硫用量效果最为明显,增加了18.4%。Through the pot-culture method,with the gypsum as the comparison,we discussed the effect of applying sulfur on the alkali-saline soil in Pingluo,Ningxia Hui Autonomous Region.The results indicate that applying sulfur can effectively reduce the soil pH and enhance the soil EC.The exchangeable Ca^2＋,Mg^2＋ and SO4^2- content increase significantly,while the exchangeable Na^＋ reduces significantly.The application of sulfur can also promote the corn＇s growth.

关 键 词：硫磺 宁夏 盐碱土 改良 

分 类 号：S156.4[农业科学—土壤学]