Abstract: By observing and analyzing different height,different mulching,different bagging temperature factors of multi-span plastic greenhouse and quality indexes of red globe grape,such as,average panicle weight,single fruit panicle weight,fruit panicle crossbar size,the content of soluble solid in fruit in north of Fujian.The results showed that the average air temperature was 0.9-1.6℃ higher than that at 50cm and 1.9-2.7℃ higher than that at 0cm in mid-May to mid-July,the difference between average maximum temperature and average minimum temperature of different bagging was 0.7-0.8℃.Daily difference was 0.2℃.The temperature change was beneficial to improving the quality of red globe grape,and especially the combination of different mulching and yellow bagging.The results could provide a reference to promoting the sustainable development of red globe grape industry in north Fujian,and managing production of multi-span plastic greenhouse.

Key words: Multi-span plastic greenhouse, Microclimate, Red globe grape quality, Plastic film mulching, Bagging