Eggplants for the autumn-winter crop in greenhouses are transplanted in mid-August. The period from transplanting to flowering lasts 44 days. For this growth stage, the suitable irrigation frequency is 4 times with an average irrigation interval of 11 days, the average single irrigation volume is 266 m3/ha, and the appropriate total irrigation volume for the stage is 1065 m3/ha. One irrigation of 450 m3/ha shall be applied right after transplanting, followed by a seedling-recovering irrigation of 225 m3/ha 5 to 7 days later. Afterwards, seedling hardening is carried out until mid-September when the eggplants enter the bud emergence stage. Seedling hardening is then terminated, and irrigation resumes at a single volume of 225 m3/ha with an irrigation interval of 6 to 7 days. The fruit setting stage of eggplants lasts 8 days, requiring 1 irrigation with a suitable volume of 300 m3/ha. The ripening stage lasts 3 days, also requiring 1 irrigation of 300 m3/ha. The harvesting stage of eggplants lasts 170 to 245 days, with a suitable irrigation frequency of 22 to 32 times, an irrigation interval of 6 to 7 days, a single irrigation volume of 280 m3/ha, and a total stage irrigation volume ranging from 6150 m3/ha to 9000 m3/ha.