枝丫是森林资源的重要组成部分。发展枝丫生产,是充分利用森林资源的重要环节。伊春林区是我国重点林区之一,每年木材产量在400万立方米左右。据乌伊岭和新青林业局1978至1980年的统计资料计算,每立方米原木产生枝丫材0.5至0.6层积立方米(包括小头直径3厘米以上的小径木、倒木、摔断的梢头等,不包括小枝丫),伊春林区每年应产生枝丫材220万层积立方米。党的三中全会以来,伊春林区的枝丫材生产有了很大发展。但是,这方面的生产潜力还很大,主要表现为“三低”:一是收集率 Branches are an important part of forest resources. The development of branch production is an important part of making full use of forest resources. Yichun Forest is one of the key forest areas in China, with an annual output of 4 million cubic meters of timber. According to statistics by Wuyi Ridge and Xinqing Forestry Bureau from 1978 to 1980, 0.5-0.6 cubic meters per mu cubic meters of lumber were produced per cubic meter of logs (including small-diameter wood with small heads more than 3 cm in diameter, fallen wood, broken ends Etc., excluding branchlets), Yichun forest area should produce 2.2 million cubic meters of timber per year. Since the Third Plenary Session of the Party, the production of timber products in Yichun Forest has greatly developed. However, there is still great potential for production in this area, which is mainly manifested as “three lows”: first, the collection rate