PROBLEM TO BE SOLVED: To provide a method of cultivating grapes with which grape vines do not lose the tree vigor, and sufficient harvesting more than once a year can be continuously achieved every year. SOLUTION: Using a pair of greenhouses of grapes in which heating equipment is provided in order to harvest grapes at three terms every two years, grapes are cultivated in one greenhouse of grapes in a cultivation season different from the other greenhouse of grapes so that grapes can be harvested at three terms a year in the pair of greenhouse of grapes every year. COPYRIGHT: (C)2013,JPO&INPIT
