Effect of Different Organic Fertilizer Application Amount on the Yield of Potato

The results of effect of different organic fertilizer application amount on potato showed that,on the basis of the equivalent chemical fertilizer,the yield was the highest when organic fertilizer was 60 t/hm2.It was suggested that at the same time of the rational use of chemical fertilizer,the yield increased obviously when the organic fertilizer was 30~60 t/hm2.