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据六年定位施肥试验,有机肥与无机氮肥单施及配合施用,土壤中的有机质含量都有所增加,以混合施用和单施有机肥效果显著,单施有机肥、有机肥和无机氮肥混合施用能调节土壤中的磷和钾,增加土壤中有效磷和缓效钾。有机肥能改良土壤物理性和调节土壤温度。作物产量以有机肥和无机氮肥配合区最高,比单施有机肥,单施无机氮肥增加的产量显著。
According to the six-year fertilization experiment, organic and inorganic nitrogen fertilizers and organic nitrogen fertilizers combined with organic fertilizers increased the content of organic matter in soil. Application can regulate soil phosphorus and potassium, increase soil available phosphorus and slow-acting potassium. Organic fertilizers improve soil physical properties and regulate soil temperature. Crop yield to organic fertilizer and inorganic nitrogen fertilizer with the highest area, than the single application of organic fertilizer, single application of inorganic nitrogen increased output significantly.