目前各地正在大搞林木快速丰产和园林化运动,要求繁殖大量健壮的杨树苗木,但杨树黑斑病为害很严重,造成苗木大量的死亡。为了解决生产中这一问题,现将辽宁省群众在防治此病中的一些经验介绍出来,以供参考。 At present, the rapid forest yield and landscape campaigns are being vigorously pursued all over the country, and a large number of robust poplar seedlings are required for breeding. However, poplar black spot disease is very serious, resulting in a large number of deaths of seedlings. In order to solve this problem in production, we now introduce some experiences of the masses in Liaoning Province in the prevention and treatment of this disease for reference.