补光对兰云杉和红皮云杉生长的影响

云杉苗期生长缓慢是生产中的主要问题,补光可促进苗木生长,缩短育苗周期,提高育苗效率.研究不同光源(阳光灯、镝灯、碘钨灯)、不同光照时间对兰云杉和红皮云杉1年生苗苗高、地径、侧枝数、根系、生物量等生长性状的影响,结果表明:光照处理可以抑制苗木休眠,促进其持续生长,对2种云杉的各生长指标均有显著的促进作用;不同光源、不同光...

The Influence of Supplemental Lighting on the Growth of Picea pungens and Picea koraiensis

Slow growth of Picea in seedlings stage is the major problem in the production, and filling light can promote seedling growth, shorten the seedling period, and enhance seedling raising efficiency. The study was carried out on the influence of different light source （ sun nation time on the growth characteristics such as light, scandium-sodium iodides lamp, optical） and different illumiseedling height, ground diameter, numbers of lateral branch, root system, and biomass of 1-year-old Picea pungens and Picea koraiensis. The results showed that light treatment could restrain dormancy of seedling, promote continuous growth of two species of spruces, and have significant promoting effect on the growth index. The influences of different light source, different illumination time on growth characteristics of different species is different. The influence of scandium-sodium iodides lamp on the growth of Picea pungens was best, and the influence of sun light on the growth of Picea koraiensis was best. Light cycle test showed ： when illumination time were 8 h, that is, daily ra/ens/s illuminated for 141 d were and 130.5% than eontrol. illumination time achieved 20 h, seedling height of Picea pungens and Picea kolargest and were respectively 12.40 cm and 14.36 cm, which increased by 394.0%