还田秸秆配施外源纤维素酶效应研究  

Effects of outer cellulose on straws

作　　者：韩玮[1] 聂俊华[1] 李飒[1] 王欣英[1] 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《生态环境》2005年第6期936-940,共5页Ecology and Environmnet

基　　金：国家科技部科技攻关计划项目(2002BA516A12);山东省自然科学基金项目(L2000D01)

摘　　要：为探求促进秸秆降解的新途径,采用室内培养法研究了外源纤维素酶对秸秆降解速率及土壤速效养分的影响。结果表明,整个培养期内,小麦秸秆,玉米秸秆加酶处理与不加酶处理降解率都存在极显著差异(p<0.01),到培养结束时小麦秸秆加酶处理降解率高出不加酶处理7.10%～11.86%,玉米秸秆高出8.01%～14.04%;整个培养期内,小麦秸秆,玉米秸秆加酶处理与不加酶处理间土壤速效氮、磷、钾含量都存在极显著差异(p<0.01),培养结束时,小麦秸秆最优处理速效氮、磷、钾含量高出对照4.15mg·kg-1,3.60mg·kg-1,32.35mg·kg-1,玉米秸秆高出6.50mg·kg-1,4.27mg·kg-1,47.97mg·kg-1。结果说明添加外源纤维素酶能够提高秸秆降解速率,促进秸秆养分矿化。In order to find the new way to promote the degradation rates of crop straws, the influences of outer cellulose on degradation rates of straws and available nutrients of soil were investigated by incubation experiments. When the incubation finished, the degradation rate of wheat straw added cellulose were increased by 7.10%-11.86%, and the rate of corn straw were increased by 8.01%- 14.04%. Compared with the CK, the contents of soil available N, available P and available K for the optimal Tr of wheat straw were increased by 4.15 mg·kg^-1, 3.60mg·kg^-1, 32.35mg·kg^-1, and for the Tr of corn straw were increased by 6.50mg·kg^-1, 4.27mg·kg^-1, 47.97mg·kg^-1 respectively when the incubation finished.

关 键 词：外源纤维素酶 秸秆 小麦秸秆 玉米秸秆 

分 类 号：S154.2[农业科学—土壤学] S158.3[农业科学—农业基础科学]