绿化苗木是城镇绿、美化的重要组成部分,它能改良空气、降低气温和城镇噪音。1 棕榈棕榈为常绿乔木,雌雄异株。它耐寒;据测量可耐到-7℃～8℃,在温暖、湿润气候条件下生长良好,有较强的耐阴能力,幼苗则更为耐阴。喜排水良好、湿润肥沃的中性或微酸性的粘质壤土,耐轻碱土、一定的干旱与水湿。耐烟 Green seedlings is an important part of greening and beautifying the town. It can improve the air and reduce the temperature and noise in the town. 1 palm palms are evergreen trees, dioecious. It is hardy; it can be measured to -7 ℃ ~ 8 ℃. It grows well under warm and humid climatic conditions, has strong shade-tolerance ability and seedlings are more shade-resistant. Hi drainage well, moist and fertile neutral or slightly acidic clay loam, resistant to light alkaline earth, a certain degree of drought and water wet. Resistance to smoke