Effects of Nitreogen Patterns on Nitrogen Use and Yield Benefit of Summer Maize Effects of urea, (NH4)2SO4 and NH4HCO3 on nitrification and acidification of a red soil THE MECHANISM OF INCREASING RICE OUTPUT BY APPLYING FERILIZERS TO WHOLE ARABLE LAYER Effects of Water Management and Slow/Controlled Release Nitrogen Fertilizers on Biomass, Nitrogen Accumulation, Translocation, and Distribution in Rice Effects of Nitrogen Deficiency on the Growth, Yield and Nitrogen Use for the Super Hybrid Early Rice Effect of drip nitrogen fertigation on growth of maize