Because the appreciate interplanting period is between wheat heading and milking stage,when wheat needs 1500-1800 m3/ha water, water supply should both ensure wheat requirement and prepare suitable soil moisture for maize emergence.

• 因为适宜套种期是小麦抽穗灌浆期，小麦需水1500~1800米3/公顷，供水应保证满足小麦需要和玉米出苗的土壤湿度。