Abstract: The aim was to provide a theoretical basis for feasibility of combined application of vinasse biogas slurry and chemical fertilizer with nitrogen reduction. Using field experiment,T1(CK,no nitrogen),T2(fertilizer),T3(biogas slurry+fertilizer),T4(biogas slurry+20% reduction of nitrogen),T5(biogas slurry +40% reduction of nitrogen),T6 ( biogas slurry + 60% reduction of nitrogen)6 treatments were set,fertilizer was N 225 kg/ha+P₂O₅ 135 kg/ha+K₂O 120 kg/ha,vinasse biogas slurry was 800 L/ha,to explore the effect of vinasse biogas slurry and chemical fertilizer on yield,quality and nitrogen fertilizer utilization efficiency of Chinese cabbage. The results showed that compared with the treatment without nitrogen fertilizer(T1),the application of nitrogen fertilizer and biogas slurry(T2—T6)could promote the growth of cabbage,significantly increase the yield of cabbage by 58. 6%-177.1%,and improve cabbage quality including vitamin C,amino acid and nitrate content. Compared with the full amount of fertilizer treatment(T2),biogas slurry + full of amount fertilizer treatment (T3) significantly increased cabbage yield by 26.6%,vitamin C,nitrate contents were significantly increased by 17.57%,6.35%,reducing sugar,amino acid contents were significantly reduced by 36.45%,17.39%,Chinese cabbage nitrogen and potassium nutrient uptake per plant increased by 20.31% and 32.89%, respectively, to increase nitrogen use efficiency,indicating that vinasse biogas slurry had a great influence on cabbage yield,quality and nitrogen use efficiency. Compared with the total fertilizer treatment(T2),there was no significant differenc in the yield of treatments of biogas slurry with 20% and 40% nitrogen reduction (T4,T5),and the nitrogen utilization efficiency was better.T6 treatment significantly reduced production.Therefore,in order to prevent the increase of environmental pollution risk caused by excessive nitrogen application,supplementing vinasse biogas slurry can reduce nitrogen application by 20%-40% in cabbage production.

Key words: Vinasse, Biogas slurry, Fertilizer, Chinese cabbage, Production, Quality, Nitrogen efficiency

摘要： 为了对酒糟沼液与化肥配施的可行性提供理论依据，采用田间试验，设置T1（CK，不施氮肥）、T2（化肥全量）、T3（沼液+化肥全量）、T4（沼液+减氮20%）、T5（沼液+减氮40%）、T6（沼液+减氮60%）6种处理，化肥全量为 N 225 kg/hm²+P₂O₅ 135 kg/hm²+K₂O 120 kg/hm²，沼液用量为800 L/hm²，探讨酒糟沼液与化肥配施(T2—T6)对白菜产量、品质及氮肥利用效率的影响。结果表明，与不施氮肥处理（T1）相比，施用氮肥和沼液能够促进白菜生长，显著增加白菜产量58.6%～177.1%；改善白菜品质包括维生素C、氨基酸和硝酸盐含量。与化肥全量处理（T2）相比，沼液+化肥全量处理（T3）白菜产量显著增加26.6%，维生素C、硝酸盐含量分别显著增加17.57%、6.35%，还原糖、氨基酸含量显著降低36.45%、17.39%，白菜单株氮、钾养分吸收量分别增加20.31%和32.89%，增加氮肥利用效率，说明酒糟沼液对白菜产量、品质和氮肥利用效率均有较大影响。与化肥全量处理（T2）相比，增施沼液并分别减氮20%、40%处理（T4、T5）产量差异均不显著，且氮肥利用效率较优；T6处理产量显著下降。因此，为防止过量施氮导致环境污染风险提高的情况发生，在白菜生产中增施酒糟沼液可减施氮肥20%~40%。

关键词: 酒糟, 沼液, 化肥, 白菜, 产量, 品质, 氮肥利用率