The balances application technique for balance high yield in the dry land with middle and lower yield.

The intercropping and interplant between maize and potato was studied to investigate the application amounts and cultivation measures for balance high yield in the dry land with middle and lower yield.The results showed that the maximum profit of the dry land with middle and lower yield in Nayong county with middle and high elevation was to 1336.55 yuan/667m2 under the application ratio of N∶P2O∶K2O= 1∶0.53∶0.83 and the comprehensive utilization rate of N,P2O and K2O was 33.52%,17.51% and 44.71%,and the maximum profit of the dry land with middle and lower yield in Weining county with high elevation was to 1349.09 yuan/667m2under the application ratio of N∶P2O∶K2O= 1∶0.69∶1.10 and the comprehensive utilization rate of N,P2O and K2O was 29.68%,10.58% and 26.80% respectively.