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榆树属榆科,落叶乔木,叶互生,小而密,厚而硬,青绿色,粗糙,新叶鲜嫩尤为可爱。三月开花结果,果名榆钱。它性喜阳,稍耐阴,适宜温暖湿润气候和半干燥土壤,适应性强,能耐寒、旱、瘠、晒。平时浇水要足,但不能积水。萌发力强,耐修剪,枝条柔韧,易蟠扎造型,是一种理想的好盆景材料。使用榆树大干扦插繁殖,生根容易,成型快,是获得较大型理想榆树桩景的良好途径。现将我的实践和体会叙述如下:每年大小寒之间从多年生老榆树上选择形状优美的大树干,截取下来。根据造型的需要,截去影响美观的枝条,选留顶端一二小枝,但要剪短,然后将接近横断面的表皮轻轻敲破(使根系能从击伤处长出来),放在生根剂溶液中浸泡一段时间,然后埋插苗床上或地栽。插桩须通风好、光照充足、朝南,土壤要透水透气良好,土壤中可加入煤渣、草木灰等以利透水透气。扦插时将插条周围泥土压实使插条与泥土密接,并套上塑料薄膜袋浇足水。以后保持土壤湿润,早晚去袋在插条上喷水。白天避阳,晚上去袋让枝条接触露水。一个月后出现芽点,生根萌叶,待芽长至5cm左右可撤去薄膜袋,但要遮荫。一星期后新枝形成,可逐渐增加光照,以至全日照,增加光合作用促进枝叶生长和根系发达。以后加强肥水管理,生长正常后每隔10天施
Elm is elm, deciduous trees, leaves alternate, small and dense, thick and hard, turquoise, rough, fresh and tender leaves are particularly cute. March flowering results, fruit name elm money. It Xiyang sexual, slightly shade-tolerant, suitable for warm and humid climate and semi-dry soil, adaptability, can be cold, dry, barren, sun. Watering usually enough, but not water. Strong germination, resistance to pruning, flexible branches, easy to pan shape, is an ideal good bonsai material. The use of elm stem cutting propagation, rooting easy, fast forming, is to obtain larger ideal elm piles King good way. Now my practice and experience narrated as follows: Between the size of the cold each year from the perennial elm to choose a beautiful shape of the trunk, cut down. According to the needs of modeling, truncated affect the appearance of branches, select the top branch twig, but to cut short, and then gently close the cross-section of the epidermis (so that the roots can be injured from the long out), on the root Soak the solution for some time, and then buried in the seedbed or planted. Instrumentation should be well ventilated, adequate light, south, the soil to be permeable to water well, the soil can be added cinder, ash and other wood to facilitate permeability of water vapor. Cuttings will cuttings around the soil compacted cuttings and mud close, and put on plastic film bags full of water. After keeping the soil moist, sooner or later go to the bag in the cuttings on the water. Avoid the sun during the day, go to the bag at night to contact dew. A month after the emergence of buds, root sprouting leaves until buds grow to about 5cm can be removed film bags, but to shade. A week after the formation of new branches, can gradually increase the light, and even full-day, increase photosynthesis to promote the growth of foliage and root system developed. After strengthening fertilizer and water management, growth after the normal application every 10 days