乙烯利对迷你桔瓜雌性化效应研究初报

Preliminary report on effect of ethrel on mini-pumpkin feminization

秋季栽培中,在迷你桔瓜不同的幼苗期、不同的时间,喷施不同浓度、不同次数的乙烯利,结果表明:大于50 mg/L乙烯利是促进迷你桔瓜雌花分化的有效浓度,其中以80 mg/L为最佳喷施浓度;最佳的喷施时期为1叶1心期;6:00喷施效果优于17:00的喷施效果;而且用合适浓度的乙烯利连续喷施2次,可以增加雌花数量和单株平均座果数。

The field experiment of cultivating mini-pumpkin in autumn was carried out to study the effects of applying ethrel at different stages, concentrations and application times on the differentiation of mini-pumpkin＇s female flowers. The results showed that the effective concentration of ethrel to promote the female flower differentiation was 50 mg/L or more, and 80 mg/L was the optimal application concentration. The optimal application time was at one-leaf and apical bud stage, and the effect of the application at 6：00 was better than that at 17.00. Spraying successively twice at appropriate concentration of ethrel could increase the number of female flowers and the fruit setting num- ber per plant.