叶锈病是杨树苗圃和人工林中发生最普遍的病害,常造成叶片提早脱落,使树木生长减慢。我国寄生于杨属的锈菌中,最常见的两个种是Malampsora magnusiana 及M.larici-populina。前者侵染白杨派各树种,只银白杨表现抗病,青杨、黑杨和胡杨均不受侵染;后者主要侵染青杨和胡杨,黑杨中有感病和抗病多种类型,白杨则全部表现免疫。防治叶锈病最为经济有效的方法是培育和 Leaf rust is the most common disease in poplar nurseries and plantations, often resulting in early leaf fall and slowed tree growth. Mycoplasma parasitized in the genus Populus, the two most common species are Malampsora magnusiana and M. larici-populina. The former invaded all kinds of poplar trees, only poplar Poplar disease resistance, Populus, poplar and Populus are not infected; the latter mainly invaded Populus and Populus, black poplar in a variety of susceptible and disease-resistant Poplar is all immune. Leaf rust prevention and control is the most cost-effective way to nurture and