甘肃临夏高寒山区杨、柳树主要病害

Main Diseases of the Poplar and the Willow in Mountainous Area of Linxia in Gansu

甘肃临夏州高寒山区杨树、柳树资源丰富，但病害种类多、危害较重。采用线路调查和标准地调查方法，调查、鉴定出该区杨、柳树主要病害４０种，其中杨树病害２４种，柳树病害１６种，在分析研究病害发生特点的基础上，提出了今后的防治建议。

Rich poplars and willows distributed in the mountainous area in Linxia, however, diseases are severe. Adopting reconnoiter along routes and investigating in sample plots, 40 kinds of main diseases were identified in the area. Of which 24 were of the poplar ones and 16 were of the willow ones. Preventive measures of these diseases were given according to occurrence pattern.