通过一年3茬小白菜田间试验,研究了4种不同施肥模式[不施肥、施纯化肥、化肥和猪粪配合施用(其中化肥氮占80%,有机肥氮占20%)、化肥和沼肥配合施用(其中化肥氮占80%,有机肥氮占20%)]对小白菜产量及硝酸盐含量的影响。结果表明,与不施肥(对照)相比,20%的沼肥综合施肥模式 Four kinds of fertilization models were applied in three kinds of field trials of cabbage per year (no fertilization, application of pure fertilizers, combined application of chemical fertilizers and pig manure (80% for chemical fertilizers and 20% for organic fertilizers), fertilizers and marsh Fertilizer with the application (including 80% nitrogen fertilizer, organic fertilizer nitrogen accounted for 20%) on the yield and nitrate content of Chinese cabbage. The results showed that, compared with non-fertilization (control), 20% biogas fertilizer comprehensive fertilization mode