青麸杨膏药病的发生与防治陆世英，陈之智，张新华青麸杨是产结五倍子的经济林木。随着人工营建林的不断扩大，青麸杨膏药病在信林的危害也日趋严重，已成为五倍子生产发展的制约因素之一。笔者在陕南倍林调查发现，青麸杨膏药病在倍林均有不同程度发生。发病株率一般为１... Qingyang Yang Plaster disease occurrence and prevention Lu Shiyi, Chen Zhizhi, Zhang Xinhua green bran Yang Yang is the yield of economic trees gall. With the continuous expansion of artificial forests, the harmfulness of Qingyang bran plaster in Shunlin has become increasingly serious, which has become one of the limiting factors in the development of gallnut production. The author found in southern Shaanxi times Lin, Qingyang plaster in Betulin have varying degrees of occurrence. The incidence of plants is generally 1 ...