《中国花卉盆景》2002年第5期发表了彭友洲的《也谈榆桩养护》一文,读后感到有一些问题值得研究探讨,尤其是对榆树的习性及新桩施肥时机,笔者与彭友洲的观点恰恰相反。①榆树的习性,无论在理论上讲,还是从实践中看,人们基本上是熟知的。即喜干怕湿(这是与其它树种作比较得出的,如赤楠、映 “Chinese flower bonsai” in 2002 fifth issue of Peng Youzhou, “also talk about Yu pile conservation,” a text, after reading some questions worthy of study, especially for the habits of elm and fertilization of new piles, the writer and Peng You Chau just point of view in contrast. ① Elm habits, both in theory and in practice, people are basically well-known. That is, like dry afraid of wet (which is compared with other species derived, such as red Nan, Ying