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在塑料大棚育苗中,采用光周期育苗技术是一项先进育苗手段.我们多年来对此项技术进行了广泛和深入的研究,光周期对樟子松作用极明显,对红皮云杉亦有显著的作
In plastic greenhouse nursery, the use of photoperiod breeding technology is an advanced nursery means.We have conducted extensive and in-depth research on this technology over the years, photoperiod on the Pinus sylvestris very obvious effect on red spruce Significant work