Dynamics of soil microbial biomass and soil enzyme activity and their relationships during maize growth

Abstract

Abstract: The dynamics of soil microbial biomass Cand Nand of the activities of soil catalase, invertase, protease and urease, and their relationships during maize growth were studied. The microbial biomass Cand Nand the enzyme activities increased rapidly and gradually reached a maximum during the early and middle periods of maize growth, then decreased and gradually remained stable during the later period. The microbial biomass and the enzyme activities were the highest in straw plus urea treatment, compared with straw treatment, urea treatment and control. No relationships were observed between microbial biomass Cand Nand hydrolyzable nitrogen, active humus and pHduring the late period of maize growth, while the relationships between microbial biomass Cand Nand activities of catalase, protease and urease reached significant or extremely significant level during maize growth.

Key words: Soil microbial biomass C and N, Soil enzyme activity, Maize

Shen Hong, Cao Zhihong, Xu Bensheng. Dynamics of soil microbial biomass and soil enzyme activity and their relationships during maize growth[J]. Chinese Journal of Applied Ecology, 1999, 10(4): 471-474.

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