秸秆不同处理方式对土壤氮磷吸附特性的影响  

Effects of Different Treatments on Soil Nitrogen and Phosphorus Adsorption Characteristics

作　　者：陆文龙[1,2] 赵标[1] 郭景海[1] LU Wen-long ZHAO Biao GUO Jing-hai(College of Resource and Environment Engineering, Jilin Institute of Chemical Technology1 , Jilin 132022, P. R. China College of Environment and Resource, Jilin University2 , Changchun 130000, P. R. China)

机构地区：[1]吉林化工学院资源与环境工程学院,吉林132022 [2]吉林大学环境与资源学院,长春130000

出　　处：《科学技术与工程》2017年第2期126-129,147,共5页Science Technology and Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07208-011)资助

摘　　要：为探讨秸秆不同处理方式对土壤氮磷吸附特性,将破碎秸秆、腐熟秸秆和秸秆炭添加到模拟施肥的土壤中,研究了秸秆还田后对土壤氮磷吸附特征的影响。结果表明,不同处理的秸秆添加土壤对铵态氮吸附速率和吸附量大小均为秸秆炭>破碎秸秆>腐熟秸秆;对磷酸根吸附速率和吸附量大小均为秸秆炭>破碎秸秆,腐熟秸秆对磷酸根负吸附。Freundlich方程能更好的描述铵态氮和磷酸根的吸附热力学过程,吸附动力学都符合伪二阶动力学方程。In order to study the adsorption characteristics of soil nitrogen and phosphorus in different treatments of straw, the crushed straw, rotten straw and straw charcoal added to simulated fertilization in soil, the effect of straw returning on soil nitrogen and phosphorus adsorption characteristics was studied. The results show that the ad-dition of differently processed straws to soil showed different effects on ammonium absorption rates and amounts in the following order; straw charcoal 〉 crushed straw 〉 decomposition straw. As for the effect on phosphate effects and amounts, straw charcoal 〉 crushed straw. The Freundlich model can better describe the thermodynamics of ammoni-um and phosphate adsorption, and adsorption dynamics all conform to pseudo-second order kinetic models.

关 键 词：秸秆 土壤 氮 磷 吸附 

分 类 号：X52[环境科学与工程—环境工程]