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日本农林省规定,葡萄果粒重7～10g为大粒,10g以上属特大粒。巨峰单果重约13g,属于特大粒品种。大粒葡萄枝梢生长旺盛,易徒长,易发生粒毛,这是由于水压使绒毛膨胀而成,不久即消失。大粒种如果株行距是12m×12m,整成x或V字形为好。平地大粒葡萄品种以主干为中心,四主枝对角线伸长的X字形为适宜。第一主蔓作为主干延长枝使其伸长,第二主蔓从架下30cm处向第一主蔓反方向延伸。第三主蔓从第
Japan’s Ministry of Agriculture and Forestry stipulates that grape berry weight 7 ~ 10g for large grains, 10g or more are extra-large grains. Jufeng fruit weighs about 13g, belonging to extra-large grain varieties. Large grain grapes shoot strong growth, easy leggy, prone to granular hair, which is due to water pressure to make villi expansion, soon disappear. Large grain if the line spacing is 12m × 12m, into x or V shape as well. Flat land grapes varieties to the trunk as the center, four main branches diagonal X-shaped extension is appropriate. The first main vine as the main trunk to extend its extension, the second main vine 30cm from the shelf to the first main vine opposite direction. The third main man from the first