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《Journal of Anhui Agricultural Sciences》 2005-08
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Effects of the Exogenous Cellulase on Soil Enzyme Activity and Enzymatic Hydrolysis under Different Substrates

LI Sa et al (Deptment of Resource and Environment Shandong Agricultural University, Taian, Shandong271018)  
To explore a newway of improving the utilization ratio of crop straws in the soil, the effort of exogenous cellulase in the soil on nativeenzyme activity and the enzymatic hydrolysis, which was based on the different substrates of CMC from corn straws and wheat straws, wasresearched. The research results indicated that: under the CMC substrate, the enzyme activity and enzymatic hydrolysis in the soil withexogenous cellulase were obviously higher than that in without exogenous cellulase, the total max enzymatic hydrolysis and the part of soil nativeenzymatic hydrolysis was 1.39 % and 1.22 %, the no-enzyme soil's was 0.73 %. When under the corn straws and wheat straws, the total enzymeactivityand enzymatic hydrolysis in the soil with out-cellulase were higher than that in the no-enzyme soil, but the soil native enzyme activity andenzymatic hydrolysis with out-cellulase were only higher than the no-enzyme soil in the first two days. Under corn straws, the total max enzymatichydrolysis and the part ofsoil native enzymatic hydrolysis was 0.45 % and 0.28 % in the second day, the no-enzyme soil's was 0.26 % in the forthday; under wheat straws, the total max enzymatic hydrolysis and the part of soil native enzymatic hydrolysis was 0.49 % and 0.33 % in the secondday, the no-enzyme soil's was 0.28 % in the forth day. Compacting with the three substrates of soil enzyme activity and enzymatic hydrolysis, theorder was that CMCcorn strawswheat straws.
【Fund】: 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)资助。
【CateGory Index】: S154
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