秸秆改良剂对沙质土有机质和阳离子交换量的影响  

Effects of Straw Modified Material on Cation Exchange Capacity and Organic Matter of Sandy Soil

作　　者：王训 闫飞[1] 王永敏[1] 王定勇[1,2] 

机构地区：[1]西南大学三峡库区生态环境教育部重点实验室西南大学资源环境学院,重庆400715 [2]重庆市农业资源与环境研究重点实验室,重庆400716

出　　处：《中国农学通报》2010年第23期224-228,共5页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划课题(2007BAD39B02);西南大学生态学重点学科"211"建设项目

摘　　要：通过盆栽实验,探究秸秆、膨润土和PAM的共同作用对沙质土壤有机质和阳离子交换量的影响,寻找改良剂的最佳配方,为秸秆沙质土壤改良剂与产业化示范提供数据基础。结果表明,秸秆、膨润土和PAM共同作用显著提高了沙质土的有机质的含量、腐殖化系数以及阳离子交换量。当秸秆预产物、膨润土和PAM的比例按900:100:30,施加量为10g/kg时,处理60天后达到了最好的效果,使沙质土有机质、腐殖质含量以及阳离子交换量分别较对照提高了28%、25%、36%。In order to provide the data foundation for the demonstration of the straw stalk modified material,the pot experiments used to inquire into the interacted function of the straw stalk and Bentonite and PAM （Polyacrylamide） were designed.The results indicate that it obviously raises the content of the soil cation exchange capacity and the contents of the soil organic matter and humus.The best formula respectively improves the content of the soil cation exchange capacity and the contents of the soil organic matter and humus by 36%,28%,25% compared with the contrast in 60 days.

关 键 词：秸秆 膨润土 PAM 土壤有机质 阳离子交换量 

分 类 号：S156.2[农业科学—土壤学]