悬铃木(Platanus hispanica Muenchh.)具有生长迅速、繁殖容易、树姿优美、枝干愈合及萌发力强等优点,被广泛地用作行道树。但其每年4-7月便有大量隔年果实开裂,轻而细的种毛随风飞扬,严重地影响城市卫生,危害人民身体健康,是目前亟待解决的城市污染问题之一。为了解决悬铃木种毛污染问题,1976-1983年,南京市的园林单位在悬铃木开花后的不同时期用不同浓度的乙烯利、萘乙酸、西维因等多种药剂进行叶面喷洒和内吸试验。试验结果表明,在悬铃木幼果期喷洒乙烯利,对抑 Platanus (Platanus hispanica Muenchh.) Is widely used as a street tree because of its advantages of rapid growth, easy breeding, graceful tree stalk, healing of branches and germination. However, from April to July every year, there are a large number of fruit cracking every other year. The light and thin variety of hair flying in the wind, seriously affecting urban health and endangering the health of the people is one of the most urgent problems to be solved. In order to solve the problem of hairy pollinosis, from 1976 to 1983, the garden units in Nanjing municipality carried out the leaf spraying and inhalation test with different concentrations of ethephon, naphthalene acetic acid and civinaine at different stages after the blooming of Platanus acerifolia . The results showed that the young Platycladus splendens ethephon on the suppression