降低伐根采伐木材是节约木材的根本措施。天水市党川森林经营所工人董生茂创造了伐树无伐根的先进经验,从原来0.2米降低到0米以下。具体方法如下:伐木工具是以栽锯为主,一般30—40厘米大的材,先在倒向锯下口(如附图)。锯下口是先在离地15—20厘米处作树根基部垂直的锯线,一般锯口深达基 Decreasing logging is the fundamental measure to save timber. DONGCHUAN DONGCHUAN FOREST MANAGER Dong Shengmao has created advanced experience in cutting trees without cutting roots, from 0.2 meters down to less than 0 meters. Specific methods are as follows: Cutting tools are mainly planted saws, usually 30-40 cm large timber, first in the backward sawing mouth (as shown). Sawing the mouth is first in the ground 15-20 cm at the root of the root of the vertical sawing wire,