崂山县是全国重点果区之一,自从山区发展果树以来,吸果夜蛾的危害越来越重,严重的影响果品生产与发展。北宅山区果园,果实被害率达70%,有的果实被迫早采。沙子口公社梨园曾因改换。良种,受吸果夜蛾严重危害,不愿再改换良种。 1965年至1967年,我们在崂山县北宅公社等山区果园进 Laoshan County is one of the key fruit areas in the country. Since the development of fruit trees in mountainous areas, the harm of the fruit-bearing moths is getting heavier and heavier, which seriously affects fruit production and development. North orchard mountain fruit orchard, fruit damage rate of 70%, and some fruit was forced to early mining. Shazikou commune pear orchard because of change. The elite, severely endangered by the fruit-boring insects, are not willing to change the elite. From 1965 to 1967, we entered the mountainous orchards in Beizha commune of Laoshan county