Effects of controlled alternative irrigation on water redistribution of root zone and yield of maize

The water redistribution and crop yield of the maize with controlled alternative irrigation were studied with the lysimeters. The results show that to compare with conventional irrigation, the soil water of controlled alternative irrigation can decrease deep percolation, and increase water use efficiency. The salinization was reduced because of irrigation amount of controlled alternative irrigation was small. The surface water content in conventional irrigation was higher than that in controlled alternative irrigation. Therefore, the soil evaporation of conventional irrigation was increased. Compared with conventional irrigation, the yield of controlled alternative irrigation was improved with the feasible irrigation amount. These results showed that the controlled alternative irrigation was a feasible irrigation pattern in Shenyang.