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于1990—1991年在洛阳市郊区孙旗屯乡俞家沟葡萄园进行了大粒葡萄无核化试验。供试葡萄品种为6年生巨峰、先锋、里查马特、红富士、红蜜、乍娜,赤霉素为上海生物制剂厂生产。用25、50、100、200mg/L 赤霉素浓度,每种浓度分别在花前2—5d(天)、花期(20%-80%开花)、花后10d 各喷布1次;在花前和花期、花前和花后、花期和花后各喷布2次;在花前、花期和花后各喷布3次,以喷清水作对照,每品种共29个处理。1990年每品种7株,每处理3个果穗;1991年每品种10株,每处理
In 1990-1991 in Luoyang suburbs Sun Qitun Yujiagou vineyard large grain grapes seedless test. Grape varieties for testing 6-year-old Kyoho, Pioneer, in check Matt, Red Fuji, Hongmei, Zachary, gibberellin production plant in Shanghai biological agents. The concentrations of gibberellic acid (25, 50, 100, 200 mg / L) were sprayed at the concentrations of 2-50 d (days) before flowering, flowering (20-80% Pre-and flowering, pre-and post-flowering, anthesis and anthesis each spraying 2 times; in the pre-anthesis, anthesis and anthesis each spray 3 times to spray water as a control, a total of 29 treatments per species. In 1990, there were 7 varieties per plant, with 3 ears per treatment. In 1991, 10 plants per treatment were treated