【摘要】 无论是作底肥还是作追肥,施用钼肥均能显著抑制莴苣、油麦菜的硝酸盐积累。叶类蔬菜施肥应氮、磷、钾合理搭配,并宜作底肥施用;单施氮肥容易导致硝酸盐的大量积累。更多还原

【Abstract】 Appling molybdenum fertilizer could remarkably reduce accumulation of nitrate in lettuce and you-mai vegetable no matter which pattern of fertilization,basal-dressing and top-dressing.Nitrogen,phosphorus and potassium fertilizers should be used inproper proportions fertilizing for leaf-vegetables and should be used asbasic manure;Appling only nitrogen manure was sure to cause accumulation of nitrate easily.更多还原