Abstract: Eight grape varieties under delayed cultivation in facilities in the Ningxia region were used as test material.The Utah model and two heat demand estimation models were used to estimate the cooling and heat demand.The cooling and heating requirements and the correlation between heat demand and cold demand, temperature change and cold demand of eight grape varieties in the process of breaking dormancy for two consecutive years under the delayed cultivation mode of facility grapes were investigated, in order to provide reference for the role of temperature in the release of dormancy in grapes under a delayed cultivation model.The results showed that under the delayed cultivation mode, the Utah model estimated the cold requirement of the eight grape varieties within two years ranged from 75.36 C.U to 392.41 C.U.The heat requirement of the eight grape varieties estimated by the length hour model and the effective accumulated temperature model ranged from 8 820 GDH ℃ to 12 096 GDH ℃ and 64.80 D ℃ to 140.22 D ℃,respectively.There was a significant negative correlation between the cooling requirement and the heat requirement estimated by the growth length hour model, and a positive correlation between the cooling requirement and the heat requirement estimated by the effective accumulated temperature model, but there was no significant difference.There was a significant negative correlation between the cooling requirement and the temperature difference between day and night and the cumulative hours of ＞20 ℃.In summary, under the delayed cultivation mode of facilities, the accumulation hours of variable temperature and high temperature were the main temperature factors for grapes to break dormancy.