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用不同浓度生长调节剂 GA、NAA 及三十烷醇分别喷洒一年生红松幼苗的地上部,结果三种调节剂对红松幼苗生长的影响部位和效果各不相同。GA 和 NAA 对红松幼苗生长均有明显的促进作用,而三十烷醇对红松幼苗生长的影响不显著。100ppm 左右的 GA_3水溶液对红松幼苗地上部分枝有明显的促进效果,100ppm 左右的 NAA 水溶液对红松幼苗的根部生长及发根率有明显的促进作用。
The aerial parts of annual Pinus koraiensis seedlings were sprayed with different concentrations of growth regulators GA, NAA and triacontanol, respectively. The results showed that the effects of three regulators on the growth of Korean pine seedlings were different. GA and NAA could obviously promote the growth of Korean pine seedlings, while triacontanol had no significant effect on the growth of Korean pine seedlings. The aqueous solution of about 100ppm GA_3 significantly promoted the shoots growth of Korean pine seedlings. The 100% NAA solution significantly promoted the root growth and rooting rate of Korean pine seedlings.