Primary Study on the Soil Urease Activity in Three Main Plant Communities in the Songnen Meadow Study on prolonged effect of humic acid-urea (long-term urea) on maize Mitigation effect of several controlled-release N fertilizers on ammonia volatilization and related affecting factors The distribution of urea concentrations and urease activities in the coastal waters of Hainan Island during the spring Effects of green manure application combined with chemical fertilizers on microbial biomass C, N and nitrogen supplying characteristics of tobacco-planting soils Urease Activity in the Loess Hilly Grassland Soil and its Relationship to Soil Property Relationship between Urease Activity and Urea Application Rate in Alpine Regions Studies on Soil Microbial Populations and Enzyme Activities of Degraded Hilly Meadow under Different Vegetative Restoration Measures in Yunnan Province Dynamics of urease activity in a long-term fertilized black soil and its affecting factors A preliminary study on the relationship between soil urease activity and soil fertility in the grazing grasslands of Yongchang county, Gansu province Effects of environmental factors on the growth and urease activity of the harmful dinoflagellate Prorocentrum donghaiense Soil urease activity during different vegetation successions in karst peak-cluster depression area of northwest Guangxi, China Ammonia volatilization characteristics and related affecting factors of humic acid urea Eco-toxicological effect of fenvalerate on soil urease activity in subtropical orchards Studies on urease activities of rhziosphere soil of legume Effect of combination of thiourea and inhibitors on soil urea-Ntransformation and corn yield Nickel — A nutrition element for higher plant growth Highest potential of subtracting nitrogen fertilizer through addition of urease inhibitor NBPT in double-cropping paddy fields