【摘要】 赤霉素（ＧＡ３）加均效剂对调节珍汕９７Ａ的生育有明显的生物学效应：能加快株高增长速度、促进抽租、提早花期和花时、解除包颈、改善授粉态势、增加柱头外露率和结实率及千粒重、提高制种产量。配加增效刑可使ＧＡ３的用量适应降低，有利于减少生产成本。更多还原

【Abstract】 There are obviously positive effects of GA3 with Activator on the Zhenshan 97A:acceleratingthe velocity of growth,promoting the heading,advancing the pered and time of flowering,releasing the rice ear encolsed in the leaf sheath, improving the posture of fertilization, raising hte amount of stigma exposed ,adding therate of setting,increasing the weight of 1000 grains and the grain yield of hybrid rice. Because of Activator,theamount used of GA3 was decreased and production costs reduced.更多还原