榆树喜光、怕湿、耐旱、耐高温,夏季必须针对其习性采取有别于其它树种的养护方法。1.防积水过湿:榆树最怕土壤过湿。夏季也不例外,稍干无妨,过湿害大,榆树耐旱力比耐湿力强,很多榆树盆景(特别是新桩)夏季枯死多因浇水过多,水多温度高或施肥浓度掌握不当,造成根系慢慢腐烂而导致死亡。这也是人们常说的新桩难度夏的原因之一。笔者认为榆树盆景的夏季浇水原刚应该是:干透湿透,稍干无妨,不可过湿。2.光照仍需充足:榆树喜光,只有在阳光充足处才能生长良好健壮。夏季也不例外。如光 Elm hi light, afraid of wet, drought, high temperature, the summer must take its habit to take different from other species conservation methods. 1. Anti-wetting water: Elm fear of soil over wet. Summer is no exception, a little drunk, wet damp, elm drought tolerance than the strong, many elm bonsai (especially the new pile) dead in summer and more due to excessive watering, juicy temperature or inappropriate concentration of fertilizer , Causing the root slowly decay and death. This is also one of the reasons people often say that the difficulty of the new pile summer. I think the elm bonsai summer watering just should be: dry thoroughly wet, dry it anyway, not too wet. 2. Light still need plenty: Elm hi light, only in sunny enough to grow well and robust. Summer is no exception. Such as light