WUE of wheat intercropping and barley intercropping was higher than that of wheat monocropping and barley monocropping, but WUE of broad bean intercropping was lower than that of monocropping.

• 间作小麦、间作大麦的WUE（水分利用率）比单作小麦、单作大麦高，但间作蚕豆的WUE比单作蚕豆低。