地下水位上升条件下磷石膏改良剂对土壤盐分迁移的影响  

Effects of Different Applied Amounts of Phosphate Gypsum Agent on Soil Salt and Ions Transfer Under the Groundwater Level Rises

作　　者：郭全恩[1,2] 车宗贤[1] 曹诗瑜[1] 李保国[2] 李春越[3] 葛洪俊 

机构地区：[1]甘肃省农业科学院土壤肥料与节水农业研究所,兰州730070 [2]中国农业大学资源与环境学院,北京100193 [3]陕西师范大学旅游与环境学院,西安710119 [4]甘肃瓮福化工有限责任公司,甘肃金昌737100

出　　处：《水土保持学报》2014年第6期171-176,共6页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(41163002;41363004);国家科技支撑计划项目(2012BAD05B03);甘肃省自然科学基金项目(1208RJZA142);甘肃瓮福化工有限责任公司"磷石膏土壤改良剂研发项目"(TFSQYHZ-10-01)

摘　　要：采用室内土柱法,模拟研究了地下水位上升条件下不同用量磷石膏改良剂对4个地区(金昌、靖远、瓜州、新疆)盐渍化土壤盐分离子向上迁移的影响。结果表明:在地下水位上升条件下,不同用量磷石膏改良剂对4个地区盐渍化土壤盐分离子迁移的影响不同,对硫酸盐-氯化物壤土和氯化物-硫酸盐砂质壤土,施用不同用量的磷石膏改良剂可以显著影响水溶性Na+的向上迁移;对硫酸盐-氯化物壤土,施用改良剂6 000,12 000kg/hm2,对土壤中水溶性Ca2+和SO2-4的向上迁移有显著影响;对氯化物粘壤土,施用不同用量的磷石膏改良剂可显著影响盐分、水溶性Na+和SO2-4的向上迁移。A simulation experiment was adopted to study the effects of different applied amounts of ameliorant on the salt and ions transfer for four areas（Jinchang,Jingyuan,Guazhou,Xinjiang）under the groundwater level rises in laboratory with soil column.The results showed that：The effects was different under applied different amounts of ameliorant on the salt and ions transfer for four areas.The influence of the watersoluble Na^＋ upward movement in a loam soil of sulfate-chloride and a sandy loam of chloride-sulfate were restrained significantly with the applications of phosphate gypsum agent.The influences of the water-soluble Ca^2＋ and SO4^2-upward movement in a loam of sulfate-chloride were restrained significantly with the applications of 6 000kg/hm^2 and 12 000kg/hm^2.The influence of the salt,water-soluble Na^＋ and SO4^2- upward movement in a clay loam of chloride were restrained significantly with the applications of phosphate gypsum agent.

关 键 词：水位上升 磷石膏改良剂 盐渍化土壤 盐分迁移 

分 类 号：S156.41[农业科学—土壤学]