要充分利用富含粗纤维的农副产品作为禽畜饲料,必须把粗纤维分解成醣。为了探索纤维素分解的原理和过程,寻找和选育较理想的纤维分解菌菌种,1971年冬,我们开始进行了纤维素菌种的分离筛选和诱变育种研究工作,从自然界中采集并分离出木霉、青霉。1972年冬,用钴～(60)(Co～(60))辐射诱变选育,取得了一定的效果。一、木霉的分离筛选我们先后从广州市郊和海南岛等地采集了44个样本,分离了108个菌株(其中青霉6株), To make full use of crude fiber-rich agricultural and sideline products as livestock feed, the crude fiber must be broken down into sugar. In order to explore the principle and process of cellulolytic decomposition and to search for and breed the more ideal strains of cellulolytic bacteria, we started the research on the isolation, screening and mutagenesis of cellulosic strains in the winter of 1971. They were collected from nature Trichoderma, Penicillium were isolated. The winter of 1972, using cobalt ~ (60) (Co ~ (60)) radiation mutation breeding, and achieved some results. First, the isolation and screening of Trichoderma We have collected 44 samples from Guangzhou suburbs and Hainan Island and other places, separated 108 strains (of which 6 strains of Penicillium)