Abstract: Effects of FGR on fruit setting and shoot growth in ‘Shui-zhang’ longan trees were studied during 1990-1991 in south China. The two-year studies indicated that the application of FGR at 1000-3000 ppm to longan trees in mid-April had a significant effect on the increased number of fruit setting. With FGR at 3000 PPm,the increased number of fruit setting was 1.38 and 1.07 times higher in 1990 and 1991, respectively, than that of the check (P≤0.05). The quality of the fruits and shoot growth were not adversely affected in all treatments.

Key words: FGR, ‘Shuizhang&rsquo, pongan, Number of fruit setting, Shoot growth

摘要： 1990~1991年的研究结果表明,FGR 1000~3000 ppm 4月中旬处理水涨龙眼,对提高果实座果数有明显效果,两年呈一致结果。高浓度(3000 ppm)处理,1990年及1991年的座果数比对照分别增加1.38倍和1.07倍(P≤0.05),具有显著的保果效应。FGR各处理对龙眼果实品质及结果期间的夏延秋梢生长发育两年均未见不良影响。

关键词: FGR, 水涨龙眼, 座果数, 枝梢生长