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落叶松线小卷蛾和松线小卷蛾在塞罕坝林场混杂发生,主要危害华北落叶松嫩芽及枝梢。海拔1600m以上林区是其主要危害区,在沟顶阳坡最先成灾。成虫期降水量少利于其增殖。监测的重点是海拔1600m以上的华北落叶松纯林。
Larix loxodonta and Pinus molitor were mixed in the Saihanba forest farm, which harmed the shoots and shoots of Larix principis-rupprechtii. The forest area above 1600m above sea level is the main hazard area, and the ditch is the first in the ditch. Precipitation less conducive to the proliferation of adults. The monitoring focuses on the pure Larix principis-rupprechtii plantation above 1600m above sea level.