Abstract:

Abstract: the soil microbial biomass and soil enzyme activities as indicators for evaluation of soil fertility properties. The effects of ryegrass manure application on soil microbial biomass and soil enzyme activities in tobacco field were studied by field experiments. The experimental results indicate that: ryegrass manure application can improve the soil microbial and soil enzyme activities (soil urease , soil acid phosphatase , invertase , catalase) as the amount of ryegrass manure application increased, but it does not mean that the more the better. The result of this experiment showed that the effect of ryegrass manure application (1500kg/667m2 )on soil fertility properties is the best .