【摘要】 在昆明树木园和丽江指云寺以及丽江香格里拉大道,开展了云南乡土树种脉瓣卫矛的城市绿化适应性研究。其内容包括脉瓣卫矛的苗木培育及抗性试验,实生及嫁接苗的开花结果效应观测,林木的抗城市污染性能以及萌生能力的调查研究等内容。结果表明:疏松、肥沃的土壤利于脉瓣卫矛苗木的生长;1年生幼苗在-7℃低温下,生长良好,3年生苗木在42℃温室内,生长旺盛,其平均高达141.5?,平均地径1.83?,平均发枝数为8.99梢/枝;人工栽培的3年生实生苗及2年生嫁接苗的开花结果率分别为1.09%与36.46%,显现出具有较早的观赏性能;街道栽培的脉瓣卫矛叶片滞尘能力可达35.778 g.m-2,其叶片对重金属污染物的吸收总量为680.215 mg.kg-1。该树种表现出较强萌发能力和抗寒性及耐高温特性,对城市污染物具有较强的抗性和净化能力。更多还原

【Abstract】 Urban greening adaptability of Euonymus tingens was conducted in Kunming arboretum,Zhiyun temple and shangrila avenue of Lijiang.The study contents included seedling raising,resistance experiment, flowing and fruiting of seedlings and grafted plants,ability to urban area pollution and sprouting ability etc.The experimental results indicated that loose and fertile soil were good for the growth of Euonymus tingens seedlings.One year old seedlings showed good growth performance at the low temperature of 7℃.In the green house,under the temperature of 42℃,the average height and average basal diameter achieved 141.5 cm and 1.83 cm,with the average number of new branch achieved 8.99 shoots/branch.The flowering and fruiting rate of 3 years old seedlings and 2 years old grafted plants achieved 1.09 % and 36.46 % respectively.Dust intercepting ability of leaf of Euonymus tingens achieved 35.778 g/m^-2,absorption amount to heavy metal pollutants was 680.215 mg/kg^-1.This species showed promising ability of sprouting,cold resistance and high temperature resistance,with high resistance to urban pollutants and purifying ability.更多还原