Shizuoka Prefecture of greenhouse melons are made ??of glass greenhouse of melon cultivation dedicated which is said to be three quota type. This greenhouse is, the area of the south side of the roof is not larger, the sun altitude is low, devised to incorporate to maximize the winter of light have been made. Also, how to leaves of melon so that the light hits well, cultivation beds are arranged in a staircase pattern, it has become higher toward the north.