一、引言双剂扩散法是把生湿材先浸在一种水溶性防腐剂溶液中,然后再浸在第二种水溶性防脔剂溶液中;当这两种防腐剂扩散进入到木材内的游离水中后,就相互起化学反应,形成一种对真菌和昆虫有毒性的、基本上不溶于水的、非洗失性的化合物,并能持久存在于木材中。这种方法主要应用于生湿圆柱材。防腐剂主要扩散进入圆柱材的边材。所需设备比较简单,处理费用较低,操作过程容易,适于在没有压力法防脔设备的地方,对刚采伐的生湿圆柱材进行处理。我们鉴于双剂扩散法的有效性,曾就浙江省所产杉木、马尾松、金钱松、擦树和加拿大白杨圆 I. INTRODUCTION The two-dose diffusion method is to wet the raw wet material first in a water-soluble preservative solution, and then immersed in a second water-soluble anti-agent solution; when the two preservatives diffuse into the wood Of the free water, react chemically with each other to form a compound that is toxic to fungi and insects that is substantially insoluble in water and non-lossless, and persists in wood. This method is mainly applied to raw wet cylinder. Preservatives mainly diffuse into the sapwood of the column. The equipment needed is simpler, has lower handling costs, is easy to operate and is suitable for handling freshly cut, wet-formed, cylindrical materials where no pressure method is used. In view of the effectiveness of the two-agent diffusion method, we have conducted research on the production of Chinese fir, Pinus massoniana, Pinus thunbergii,