Fertility significance of microbial biomass in red soil ryegrass system

Abstract

Abstract: The study on the inherent relations of microbial biomass in red soil with soil nutrient cycling and ryegrass growth shows that the microbial biomass was not only significantly correlated with soil organic C, total N and available N, but also highly correlated with dry matter yield and Nuptake of plants,indicating that soil microbial biomass could be used as an important indicator for soil fertility and plant production. The turnover period of microbial biomass Nin red soil was relatively short, and the annual flux of Nthrough microbes was as 1.5 times or more as microbial biomass N.

Key words: Red soils, Microbial biomass, Soil-ryegrass system

Yao Huaiying, He Zhenli, Chen Guochao, Huang Changyong . Fertility significance of microbial biomass in red soil ryegrass system[J]. Chinese Journal of Applied Ecology, 1999, 10(6): 725-728.

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Fertility significance of microbial biomass in red soil ryegrass system

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