1Vegetable Research Institute，Beijing Academy of Agricultural and Forestry Sciences，Institute of Agri-food Processing and Nutrition，Beijing Academy of Agricultural and Forestry Sciences，Beijing 100097，China；2National Engineering Research Center for Vegetable，Beijing 100097，China；3Key Laboratory of Urban Agriculture North China，Ministry of Agriculture and Rural Aff airs，Beijing 100097，China
Abstract：In order to explore the eff ects of defi cit irrigation treatment and harvest time on tomato shortterm storage，the changes of color，weight loss rate，hardness，VC，soluble sugar，titratable acid，peroxidase（POD）and polyphenol oxidase（PPO）of tomato fruits with 5 types of diff erent maturity（S1-S5）under 3 types of irrigation volume（normal irrigation CK，light defi cit irrigation T1 and moderate defi citirrigation T2）were compared at under the conditions of substrate cultivation in a solar greenhouse．The resultsindicated that tomatoes of lower irrigated amount（moderate defi cit irrigation T2）exhibited higher levels of hardness，soluble sugar，VC content，POD and PPO activities compared to those treated with higher irrigated amount（normal irrigation CK，light defi cit irrigation T1），whereas the titratable acid content was relatively lower．Tomato with low maturity could keep good appearance quality during storage，and its antioxidant enzyme content was relatively higher．Considering the comprehensive irrigation volume and harvest maturity，the tomato storage quality of the S2 stage under moderate defi cit irrigation（T2） was optimal and more suitable for short-term storage.
