The intercropping and interplanting between maize and potato were studied in Guizhou, China, to investigate the application rates and cultivation measures for balance high yield in the dry land with middle and lower yield. The maximum profit of the dry land with middle and lower yield in Nayong county with middle and high elevation was 1336.55 yuan/667 m 2 under the application ratio of 1:0.53:0.83 of N:P 2O:K 2O, and the comprehensive utilization rate of N, P 2O and K 2O was 33.52, 17.51 and 44.71%. The maximum profit of the dry land with middle and lower yield in Weining county with high elevation was 1349.09 yuan/667 m 2 under the application ratio of 1:0.69:1.10 of N:P 2O:K 2O, and the comprehensive utilization rate of N, P 2O and K 2O was 29.68, 10.58 and 26.80%, respectively.
