Abstract: 【Objective】To provide effective technical measures for resolving over use of chemical nitrogen fertilizer, decreasing costs and increasing benefit in dry pepper.【Methods】The experiment with the material of “Beixing No.6” pepper, the effect of chemical nitrogen fertilizer reduced and microbial fertilizer increased on the growth, quality and yield of dry pepper were studied. a total of 9 treatments designed, among them,268.8 kg/hm² N fertilization as control,and 2 N fertilization reduction level of 30% and 45% decrement, based on this 2 N fertilization reduction level, 4 treatments designed including microbial fertilizer increased, organic fertilizer increased, organic fertilizer+microbial fertilizer, and pure urea.【Results】The results showed that the treatment of T₈, N fertilization reduction 30% has little influence on yields of pepper, and the highest yield was N fertilization reduction 30%+organic fertilizer+microbial fertilizer,at 40 056.0 kg/hm². But when N fertilization reduction 45%, vegetative growth began to be limited, yield also decreased in different degrees. With the increasing of N fertilization reduction, nitrite and ascorbic acid content of pepper fruit showed decreasing tendency. Three treatments(microbial fertilizer,organic fertilizer+microbial fertilizer) significantly increased pepper growth index under the level of N fertilization reduction 30%. Compared with the treatment of urea only, treatments of microbial fertilizer, organic fertilizer, organic fertilizer+microbial fertilizer could significantly improve ascorbic acid content of pepper fruit under the different level of N fertilization reduction.【Conclusion】Optimum fertilizing scheme was N fertilization reduction 30%+organic fertilizer+ microbial fertilizer.

Key words: Pepper, Nitrogen-reduction, Organic fertilizer, Microbial fertilizer, Growth traits, Nutritional quality, Yield