干旱地区农业研究Issue(4)：112-116,196,6.DOI:10.7606/j.issn.1000-7601.2015.04.18
羊草和脱硫石膏对内蒙古河套地区盐渍化土壤的改良效果
Effects of Aneurotepidimu chinense and desulfurization gypsum on the amelioration of Na2SO4 saline soil in Hetao Inner Mongolia
摘要
Abstract
To address the positive impacts of desulfurization gypsum and halophytes on saline soils ,a field experi-ment was set up in a Na2SO4 saline soil of Hetao Inner Mongolia .Desulfurization gypsum was added into the soil and then Aneurotepidimu chinense were planted .The monitored parameters included salts and basic soil properties .The results showed that spring irrigation largely reduced the levels of pH ,electrical conductivity (EC ) and salt ions in all soil lay-ers .Adding desulfurization gypsum resulted in further reduction of alkalinity .The main ions of Na+ and SO42- were re-duced by more than 80% and 39% ,respectively .However ,the addition induced the increases of EC value and nutrient leaching . Aneurotepidimu chinense had a good positive response to desulfurization gypsum , increasing dry matter by 30% .But phosphorus content in plant tissues was decreased by 22% .The contents of N and K in plant tissues were not significantly influenced by adding desulfurization gypsum .Aneurotepidimu chinense cultivation resulted in significant de-creases of Na+ and SO42 - in soil to 3 .38 and 132 .27 mg·kg-1 ,respectively ,but increases of soil organic matter and alkaline-released N by 12% and 37% ,respectively .The better improvement on soil fertility was obtained when Aneu-rotepidimu chinense was grown along with the addition of desulfurization gypsum .It was evident that there was a positive interaction between Aneurotepidimu chinense and desulfurization gypsum ,which accelerated the amelioration of saline soil .Additionally ,it should be noticed that addition of PK fertilizers might be needed to compensate loss of soil available P and K nutrients .关键词
羊草/脱硫石膏/盐渍化土壤Key words
Aneurotepidimu chinense/desulfurization gypsum/saline soil分类
农业科技引用本文复制引用
许毅,徐彦虎,林启美,李贵桐,赵小蓉..羊草和脱硫石膏对内蒙古河套地区盐渍化土壤的改良效果[J].干旱地区农业研究,2015,(4):112-116,196,6.基金项目
国家十二五科技支撑计划项目“河套地区盐碱地耐盐植物高效利用与生态修复模式研究与示范” （）
