本文应用N_2激光辐照谷氨酸生产菌钝齿棒状杆菌T_6-13。激光波长337.1nm,能量6mj、脉冲宽度10ns,脉冲频率70～80次/分。实验菌分为六组,分别接受4、8、12、16、20和24分钟的光辐照,处理后的细胞进行分离培养和发酵试验,测定细胞的培养特征、生理性能和遗传特性等方面的诱变效应。 In this paper, N_2 laser was used to irradiate glutamic acid producing strain Corynebacterium plicata T_6-13. Laser wavelength 337.1nm, energy 6mj, pulse width 10ns, pulse frequency 70 ~ 80 beats / min. The experimental bacteria were divided into six groups, which received 4, 8, 12, 16, 20 and 24 minutes of light irradiation. The treated cells were subjected to isolation and culture and fermentation tests to determine the culture characteristics, physiological properties and genetic characteristics of the cells. The mutagenic effect.