Abstract: In order to explore the application effect of microbial fertilizer in potato production. In this paper,the effects of different dosages of F01 complex microbial agents on the growth of potato plants,the accumulation of nitrogen,phosphorus and potassium in various organs,as well as the yield and quality were studied by field experiments. The results showed that compared to the non-bacterial agent,the increase of the application amount of F01 compound micro-ecological bacteria in a certain range promoted the growth of potato plants to a certain extent,and increased the absorption and accumulation of nitrogen,phosphorus and potassium nutrients. The weight of single potato and tuber yield were increased,and the crude protein content of tubers was increased,but the starch content of tubers was not affected. The yield increase and the income increase were the best at 75.0 kg/hm²,and the yield was 46 957.90 kg/hm²,which was 16.0% higher than that of the control. The weight of single potato increased by 16.9%. Th economic income increased 4 391.8 yuan/hm² by an increase of 29.8%. The absorption and accumulation of nitrogen,phosphorus and potassium in the whole plant increased by 66.1%,31.7% and 87.3%,respectively.

Key words: Potato, Microbial agents, Nutrient accumulation, Yield, Quality