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我国沿海岸线一些木质建筑物,如桥梁、码头、渡口和海港等经常浸没在水中的桩柱,受到海水中的甲壳钻孔动物及软体动物蛀食甚为严重。一般桩柱经过2～3年,即被蛀毁,20～30厘米直径的桩木,有的仅剩4～5厘米心材,有的被蛀断。每年造成国家财产的严重损失。为了进一步研究对团形水虱和船蛆的防治,1959年秋,曾与福建省交通厅共同在闽南沿海一带作了一次调查,茲将桩柱蛀毁情况介绍于下: 木桥桩木的蛀毁情况:根据距海约1～3公里河流上的四座木排架大型简支梁桥的调查结果,其桩木及下夹木均受团形水虱的蛀食,受害情况大致相同。枫亭桥:枫亭桥为1950年修建的双排架杉木简支梁
Some of the wooden buildings along the coast of our country, such as bridges, piers, ferries and seaports, which are often submerged in water, are seriously eaten by crustaceans and molluscs in seawater. The general pile after 2 to 3 years, that is, destroyed, 20 to 30 cm diameter pile wood, and some 4 to 5 cm remaining heartwood, and some were cut off. Every year, it causes serious losses of state property. In order to further study the prevention and treatment of hydrometeor and hydra, in the autumn of 1959, together with Fujian Provincial Department of Communications, conducted a survey along the coast of southern Fujian Province, and introduced the situation of pitting and mire destruction in the following: Damage situation: According to the survey results of four large wooden-supported simple girder bridges on the river from 1 to 3 km away from Haiyin, the pile wood and the underwood are affected by the group-shaped water lice and the damage is roughly the same. Maple Bridge: Maple Bridge was built in 1950 double-framed fir simply supported beams