木尺蠖近年在晋、冀、豫交界的黎城、涉县、武安、磁县、林州等县市连续暴发危害，已成为该区农林业生产的重要害虫。1992年仅涉县发生面积就达3O150公顷，危害树木76O万株，一般减产ZO％～50％，其中2500公顷农作物受害绝收，395·2万株树叶被吃光。为探讨其发生规律及防治方? In recent years, wooden scrofa plants have continuously outbreaks in the cities of Li, Shexian, Wuan, Cixian and Linzhou at the junction of Shanxi, Hebei and Henan. They have become important pests for the production of agriculture and forestry in the area. In 1992, the area affected by Shexian County reached 3,015 hectares and 7.6 million trees were harmed, and the yield was reduced by 50%. Of these, 2,500 hectares of crops were harvested and 3,925,000 leaves were eaten. To explore its occurrence and prevention and treatment side?