The effects of different cutting roots and fertilization measure on soil nutrient

microbe quantity and enzyme activity both rhizosphere and non-rhizosphere soil in I-107 poplar plantation were studied by field plot experiment.Results showed that the pH value in rhizosphere soil of same treatments poplar plantation was lower than that in non-rhizosphere soil

but the content of organic

available nitrogen

available phosphorus

available K

utility cuprum and utility zincum were all higher than those in non-rhizosphere soil.The available nutrient content of cutting roots fertilizer treatment was significant more than other treatments both in rhizosphere and non-rhizosphere soil.Cutting roots fertilizer treatment increased the activity of soil urease

invertase

catalase

polyphenol oxidase

peroxidase significantly

compared with CK.Five soil enzyme activities by fertilizer treatment increased little

but cutting roots treatment decreased the activity.The quantities of microbe were orderly followed as cutting roots fertilizer

fertilizer

cutting roots

CK.The results implied that the measure of cutting roots fertilization may improve the root soil environment and enhance the plantation soil fertility.