nitrogen fertilization rate 第1页

Effects of nitrogen rate and row spacing on winter wheat grain quality Effect of cultivation pattern and nitrogen application rate on soil fertility and nitrate accumulation under maize-wheat rotation system Effects of nitrogen fertilization rate and planting density on cotton boll biomass and nitrogen accumulation in extremely early maturing cotton region of Northeast China. Effects of nitrogen fertilization rate and planting density on cotton biomass and nitrogen accumulation in extremely early mature cotton region of Northeast China. Effects of irrigation amount and nitrogen fertilization rate on wheat yield and soil nitrate content. Effects of nitrogen fertilization rate in jujube-cotton intercropping on dry matter accumulation and yield and quality of cotton