连续施用商品有机肥对耕地质量及蔬菜产量的影响

本试验采用连续3茬蔬菜种植试验,研究无肥、纯化肥、化肥配施不同量有机肥对耕地质量及各蔬菜产量的影响。结果表明,长期施用商品有机肥可导致砷、铅、铬在蔬菜地表层土壤中积累,且积累量随有机肥施用量的增加而增加;施用商品有机肥能降低碱性土壤的pH值,有利于作物正常生长;施用化肥配商品有机肥不仅能显著增加土壤中有机质、碱解氮、有效磷和速效钾的含量,还能显著增加包心菜、小青菜和玉米的产量,且随商品有机肥用量的增加而增加,表明肥料投入与土壤肥力和蔬菜产量呈正比。

Effect of Continuous Application of Commercial Organic Manure on Farmland Quality and Vegetable Yield

Field plot trials were carried out with cabbage, brassica chinensis and corn involving 3 different fertilization schemes including non-fertilizer, chemical fertilizer, chemical fertilizer with organic manure to investigate the effects of the fertilization schemes on farmland quality as well as vegetable yield. The results showed that the fertilization scheme of organic manure caused accumulation of arsenic, lead and chromium, and the accumulation increased with organic manure amount; pH of alkaline soil was decreased by organic manure; the chemical fertilizer with organic manure significantly increased the content of soil organic matter, available nitrogen, available phosphorus and available potassium, as well as the yield of cabbage, brassica chinensis and corn, which indicated the increasing of soil fertility and vegetable field were based on fertilizer inputs.