[Effects of returning maize straw into field on dynamic change of soil microbial biomass C, N and P under different promoted decay condition]
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Updated: Aug 13, 2026

Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures
Published on: October 29, 2016
Dianxue Zhang1, Zhiqing Han, Dongpo Li
1Department of Agronomy, Hebei Normal University of Science and Technology, Changli 066600, China. zdxzjj@163.com
Abstract:
A 2-year field experiment of wheat-maize rotation was conducted on a cinnamon soil of east Hebei Province to study the effects of returning maize straw into field on the dynamics of soil microbial biomass C, N and P, and their relationships with soil nutrients and enzyme activities. The results showed that under the condition of returning maize straw combined with applying chemical fertilizer to adjust straw C/N, the application of effective microorganisms could increase soil microbial biomass C, N and P in each crop growth period, advance their peak time, and better regulate soil nutrient supply, compared with no application of effective microorganisms. Soil microbial biomass had a significantly positive correlation with soil enzyme activities, but its correlation with soil hydrolysable N and available P was strongly affected by crop growth and fertilization system.
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