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本研究以1976年定植的青岛温州为试材,分两年进行。1983年选4～5叶的有叶果枝,分别在5、6、8月的中旬疏果,亦设不疏处理,以营养枝为对照,于7、9、11月及次年3月中旬采样分析。1985年5月到次年1月,营养枝每月采样,有叶果枝隔月采样。 据1985年测定,花期营养枝茎中类赤霉素活性高,其后急剧降低,7月几乎测不到活性;9、11月迅
This study was conducted in Wenzhou, Qingdao, which was planted in 1976, for two years. In 1983, 4 to 5 leaves of fruiting branches were selected, respectively, in the middle of May, June and August to thin fruit, also set not sparse treatment, with nutrition as a control in July, September and November and the middle of March the following year Sampling analysis. May 1985 to January of the following year, nutrition branch monthly sampling, leaf fruiting branches every other month sampling. It was determined in 1985 that flowering stems have high activity of gibberellin, then dropped sharply, and almost no activity was detected in July;