Effects of chemical fertilizer reduction combined with microbial fertilizer application on yield,quality,and soil properties of broccoli
In order to explore a suitable fertilization method,which could both reduce the input of chemical fertilizers and increase the efficiency of broccoli production,a field experiment was conducted to investigate the effects of differ-ent fertilization modes on the yield,quality,fertilizer utilization efficiency,and soil nutrients and enzymes activities of broccoli.There were four treatments:CK,no fertilizer applied;W1,conventional fertilization mode;W2,chemi-cal fertilizer reduction by 10%(compared with the W1 treatment,the same as below)+microbial fertilizer 1 200 kg·hm-2;W3,chemical fertilizer reduction by20%+microbial fertilizer1 500 kg·hm-2;W4,chemical fertilizer re-duction by 30%+microbial fertilizer 1 800 kg·hm-2.The results showed that compared with the conventional fertili-zation mode,application of appropriate reduction of chemical fertilizer combined with microbial fertilizer could im-prove the biological traits and yield of broccoli,improve its quality,increase the utilization efficiency of nitrogen,phosphorus,potassium fertilizers,and enhance the soil nutrients content and enzymes activities.The subordinate function method was used to comprehensively evaluate the characteristics and quality of broccoli under different ferti-lization modes,and the W3 treatment exhibited the best performance,as well as the highest economic benefit,which could be promoted in agricultural production.
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