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铁刀木(Cassia siamea Lain)是一种热带林木,我国两广、云南、福建、台湾,国外如印度、泰国、澳大利亚等东南亚国家都有栽培。该树生长迅速,萌芽力强,是用作薪炭材的著名树种,心材亦是良好的建筑用材,为群众所喜欢种植。可是,铁刀木粉蝶(Catopsilia pomona Fabricius)对该树种为害严重,这种害虫在中国、东南亚都有分布,幼虫对幼苗到成龄大树均有危害(食叶),是这个树种的大害虫。在海南岛尖峰岭地区,害虫每年发生10多代,大发生时常常把整个幼树嫩叶和较老叶
Cassia siamea Lain is a kind of tropical forest. China, Guangdong, Guangxi, Fujian, Taiwan and other Southeast Asian countries such as India, Thailand and Australia have cultivation. The tree grows rapidly, sprouting strong, is used as a famous tree species firewood, heartwood is also a good building materials, for the masses like to plant. However, the species Catopsilia pomona Fabricius is extremely devastating to this tree species. It is distributed in China and Southeast Asia. The larvae are harmful to seedlings and mature trees (leaf) and are the major pests of this species . In Jianfengling, Hainan Island, the pests occur more than 10 generations per year. In the event of large occurrence, the young leaves and the older leaves