fertilizerapplication 第1页

N2O emission from grassland soils and the teedback effect or nutrient changes resulting from global warming Effects of nitrogen fertilizer application strategy on N uptake, utilization and yield of cotton using 15N trace technique null Effects of a controlled-release nitrogen fertilizer on tea yield and quality and rational application technology Complexation characteristics of humic acids with Fe2+ and their fractions from soil with different fertilization Ⅱ- The complexation of humic acid fractions with Fe2+