Effects of nitrogen management on yield, quality, nitrogen accumulation and its transportation of watermelon in gravelmulched field. Effects of phosphorus fertilization on yield of winter wheat and utilization of soil nitrogen. Effects of planting density on  root spatiotemporal distribution and plant nitrogen use efficiency of winter wheat. Effects of irrigation on nitrogen uptake and distribution of wheat using the 15N tracer technique Response of yield, quality and nitrogen use efficiency to nitrogen fertilizer from mechanical transplanting super japonica rice. Effects of tillage mode and nitrogen application rate on nitrogen use efficiency of wheat in a farming-pasture zone of North China. Effects of nitrogen regulators on fertilizer nitrogen transformation in meadow cinnamon soil and on pakchoi growth.


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