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The effect of subsoiling on corn in dryland farming was discussed. The results showed that corn yields were higher increased compared subsoiling with traditional cultivation, especially in the rainfall less year. At same time, crop water consumption was not increased with the increased in output of the corn. The output of small amount of water increases actually. Water use efficiency was affected not only by the impact of water consumption, but also by the depth and cycles of subsoiling cultivating. Under certain conditions of the impact of the water consumption, the appropriate subsoiling cultivation cycle and depth could not significantly increase production, however, significantly increase water use efficiency.