Bacterial and Fungai Biomass and Activities in Straw Mulch No Tillage Soils

Abstract

Abstract: Longterm continuous straw mulch no tillage increased soil total and active microbial biomass and activities.Tillage methods influenced soil bacterial and fungal biomass and activities.Conventional tillage increased soil bacterial biomass,but the shapes and distributions of soil bacteria differed insignificantly for different tillage soils.No tillage increased soil total and active hyphal length and biomass.The bacterial and fungal contributions to respiration differed remarkably for tillage method experimental soils.Conventional tillage surface soil layer concentrated largely fungal component,while no tillage soil had much bacterial activities.It showed that soil microbial activity and is not consistent with biomass and its composition in different tillage method soils.

Key words: fireline intensity, fuel consumption, moisture content, fuel loading, fuelbed thickness, Quercus mongolica.

CLC Number:

S154.36

Gao Yunchao, Zhu Wen shan, Chen Wenxin. Bacterial and Fungai Biomass and Activities in Straw Mulch No Tillage Soils[J]. cje, 2001, (2): 30-36.

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