[2] A. Putnova, J. Sebanek, J. Minarand et al.. The effect of laser irradiation of dry seeds on the activity of nitrate reductase in pea roots. B. A., 1989, No.124145
[6] S. R. Govil, D. C. Agrawal, K. P. Ral et al.. Physiological responses of vigna radiata L. to nitrogen and argon laers irradiation. Plant Physiol., 1991, 34(1):72~76
[8] Xiang Yang. Laser Biology. Changsha: Hunan Science and Technology Publishing House, 1995. 73~226 (in Chinese)
[11] Yuan Xiaohua. Plant Physiological and Biochemical Test. Beijing: Beijing Education Publishing House, 1983. 57~60 (in Chinese)