一、前言母生(Homalium hainanense Gagnep)是海南岛的主要珍贵用材树种之一。解放后,全岛相继营造了母生人工纯林约五万余亩,广东大陆有的地方也陆续引种,生长良好,并有部分已成林郁闭。随着造林面积逐渐扩大,各地的母生林大都遭受不同程度的虫害,影响林木的生长。为利于开展防治工 I. Preface The mother (Homalium hainanense Gagnep) is one of the main precious tree species in Hainan Island. After the liberation, the whole island has successively created about 50,000 mu of pure mother plantation, and some places in Guangdong Province have also been introduced one after another. They have grown well and some have become lush. With the gradual expansion of afforestation area, most of the native forests in different parts of China suffer from pests to varying degrees and affect the growth of trees. To facilitate the prevention workers