Effects of Nitrogen Forms on Rhizosphere Microorganisms and Soil Enzyme Activity for Nitrogen Transform of Wheat Cultivar during Elongation and Grain Filling Stage
With pot experiments,the effect of three nitrogen forms,nitrate(NaNO3),ammonia(NH4HCO3) and urea(NH2CONH2) on rhizosphere microorganisms and soil enzyme activity for nitrogen transform of wheat cultivar(Yumai 34) of different stage was studied.The results indicated as follows: There were prominent difference among the activities of different rhizosphere microorganisms and soil enzymes for nitrogen transform,the activity turn was: The activity of bacterial of denitrafication,nitrification,proteinase,sub-nitr...