关键词: 化肥减量, 春甘蓝, 产量, 品质

Abstract: Reducing chemical fertilizer and adding organic manure is an effective way to achieve zero growth of chemical fertilizers application, so this paper took purple soil as substrate and studied the effect of reducing fertilizer by adding organic manure on high yield and quality of spring cabbage. Six different fertilization patterns were adopted for 2 successive years, including FCF (farmers routine chemical fertilizer), CK (recommended quantity by Agricultural Department of Sichuan Province), T-10 (amount of chemical fertilizer decreased by 10% than CK), T-20 (amount of chemical fertilizer decreased by 20% than CK), T-30 (amount of chemical fertilizer decreased by 30% than CK), T-40 (amount of chemical fertilizer decreased by 40% than CK), and then organic manure was added to top up the loss of fertilizer efficiency and analyzed the effects of different fertilization treatments on yield and quality of spring cabbage. The results showed that reducing chemical fertilizer and adding organic manure could significantly increase the yield of spring cabbage and improve its quality. Compared with CK, yield increase rate of T-10 and T-20 was over 9.8%. In addition, the sensory quality, nutritional quality and safety quality of T-30 were significantly higher than that of the other fertilization treatments, indicating that reducing chemical fertilizer application and adding organic manure could significantly increase the yield and quality of spring cabbage. This fertilization model was rational for increasing stable yield and improving quality of spring cabbage in purple soil areas. This paper provided theoretical basis for utilizing organic manure resources in purple soil regions and adjusting fertilization structure of spring cabbage.

Key words: reducing chemical fertilizer, spring cabbage, yield, quality