long-term located experiment 第1页

Effect of long-term single application of chemical fertilizer on soil properties and crop yield Inorganic phosphorus in a regosol (purple) soil under long-term phosphorus fertilization Influence of long-term fertilization on phosphorus fertility of calcareous soil Ⅱ.Inorganic and organic phosphorus. Effects of long-term mixed application of organic manure and chemical fertilizers on farmland weed soil seedbank