| In this study, two kinds of leguminous plant, soybean and trigonella foenum-graecum, were imported
in monoculture greenhouse. The effects on soil microbial biomass N, microbial biomass C, soil microbial biomass, and
soil enzyme activity were investigated before/after green manure returned to field. The results showed that in the fallow
period of greenhouse, the enzyme activities of cellulase, urease, sucrase, significantly increased after planting soybean
and trigonella foenum-graecum. Compared with planting trigonella foenum-graecum, the amount of dry matter was
highter in soybean planted treatment. After green manure returned to field, the soil enzyme activities in soybean
treatment were lower than those in trigonella foenum-graecum, but the soil microbial population, population and ratio
of bacterial, soil microbial biomass N and C were significantly higher than those in trigonella foenum-graecum and
control, and microbial biomass C/N was more optimum. In conclusion, soybean could be used as short-term green
manure crop in greenhouse. |
