光缆应用之初,长途干线以架空为主,随着我国光通信的迅猛发展,光缆直埋敷设成为主流。但是在我国很多地区,尤其是在华南地区,白蚁灾害严重,普通类型的直埋缆无法抗拒白蚁的虹蚀,常常导致通信中断,给国民经济带来重大损失。直埋光缆预防白蚁蛀蚀的方法主要有三种:生态法、物理法和药物法。生态法是选 At the beginning of the application of optical fiber cable, long-haul trunk lines are mainly overhead. With the rapid development of optical communication in China, optical fiber cables are buried in the mainstream. However, termites are seriously disastrous in many areas of our country, especially in southern China. The direct-buried cables of ordinary types can not resist the erosion of termites and often result in the interruption of communications and cause heavy losses to the national economy. Buried optical fiber cable to prevent termite decay There are three main methods: ecological law, physical law and drug law. Ecological law is the election