大丽花为菊科多年生块根花卉,又名西番莲、大丽菊,是世界名花之一。一般植株高大,多适于地栽。用作盆栽的最好选茎节短粗,多发枝权、勤开花的矮棵品种。笔者这几年在盆栽大丽花的实践中,获得了棵型矮(最高达50-60厘米)、花期长(6月-12月一直开花不断)、花多而艳的好效果。选种催芽:春分前后,选取无病斑的种块,用口径及盆高各约30cm的瓦盆或缸,底部垫5cm厚的粗炭渣,以利排水。再放上发酵迟缓、肥效期又长的蹄片、鸡、鸭毛及毛发作底肥,上面放肥分较多的营养土,再掺上1/3的锯末,把种块放在其中,上覆盖营养土,然后浇透水。盆口用铁丝或竹签扎成圆拱型,罩上塑料薄膜,罩内挂一温度计,罩内温度一般控制在20-25℃之间,当气温上升到30℃以上时,可将罩掀开两小洞,通风透气,以免温度过高湿度大而使块根腐烂;晚上如果温度低,可把盆放在炉火旁,给罩内增温,保持湿度适中,一般20-25天即可出芽。等芽长到1Ocm时,室外温度保持10℃以上时,可把塑料薄 Dahlia for Asteraceae perennial tuber flowers, also known as passionflower, Dahlia, is one of the world famous. Generally tall plants, more suitable for planting. The best selection for potted stem section stubby, multiple branches, dwarf ground flowering varieties. In recent years, the author in the practice of potted Dahlia, won the tree type short (up to 50-60 cm), flowering long (June-December has been flowering), flowers and more good results. Selection of germination: Before and after the vernal equinox, select the disease-free species of the block, with caliber and basin height of about 30cm pots or pots, bottom pad 5cm thick coarse cinder to facilitate drainage. Then put on the slow fermentation, long-term fertilizer efficiency of the shoe, chicken, duck hair and hair for the end of fat, fertilizers put more nutrient soil above, and then mixed with 1/3 of sawdust, the species on which, on Cover nutritious soil and then water. Bowl with wire or bamboo stick into a round arch, covered with plastic film, a thermometer attached to the hood, the hood temperature is generally controlled between 20-25 ℃, when the temperature rose to above 30 ℃, the hood can lift Open two small holes, ventilated, so as not to overheat the humidity and make the root rot; at night if the temperature is low, the pot can be placed next to the fire, the hood to warm, keep the humidity moderate, usually 20-25 days Budding. When the bud grows to 1Ocm, the outdoor temperature is maintained above 10 ℃, the plastic thin