THE EFFECT OF CONTINUOUS TOBACCO CROPPING ON THE MICROBES AND ENZYME ACTIVITIES IN RICE SOIL Effects of different fertilization on structure and function of soil bacterial community Relationship between the number of three main microorganisms and the soil environmentof degraded grassland on the north slope of the Tianshan Mountains Influence of eco-environment on crude fibre resolvability of ruminal microbial flora in vitro culture The effect of high-grain diets on small intestinal fermentation, morphological structure and microbial flora in goats On the effect of rice-straw returned to the field on microbes and enzyme activity in paddy soil Influence of the straw decomposition of Bt transgenic rice on soil culturable microbial flora Effect of mulching mode and wheat root on soil microbial flora Effects of Different Fertilizers on Functional Diversities of Microbial Flora in Rhizospheric Soil of Monoculture Tobacco