植物生长调节剂对大叶栎幼苗生长的影响

Effect of Plant Growth Regulator on Castanopsis fissa Seedlings

[目的]研究不同植物生长调节剂对大叶栎幼苗生长的影响,探索大叶栎培育壮苗的最佳方案,指导育苗生产实践。[方法]利用不同浓度的生根粉和萘乙酸对大叶栎幼苗进行处理,并且对苗高、地径、生物量等形态指标和叶绿素含量等生理指标进行测定。[结果]2种生长调节剂对大叶栎苗木的生长有明显的促进作用,尤以喷施ABT 50 mg/L的处理表现最佳,其苗高、地径、根系总长、叶面积、叶绿素含量分别比对照提高了27.53%、61.54%、70.91%、64.23%、21.43%。[结论]该研究为2种生长调节剂(萘乙酸和生根粉)的使用提供了依据。

The aim of the research was to study the effect of plant growth regulator on Castanopsis fissa seedlings, and to seek optimum method for breeding seedlings in production. [ Method] Seedlings of Castanopsis fissa were sprayod with different concentrations of ABT3 arid NAA. Form indexes such as height, diameter and biomass and physiological indexes such as chlorophyll content of seedling were tested. [ Result ] Plat growth regulators had obvious accelerative effect on the seedling growth. ABT with 50 mg/L concentration had the most remarkable effect on the growth. The height, stem of seedling, total length of roots; leaf area, chlorophyll content of plats which was sprayed with ABT 50 mg/L reached 27.53%, 61.54%, 70.91% ,64.23% and 21.43% respectively, which were higher than that of the control. [ Conclusion] NAA and ABT had obvious effects on accelerating o the seedling growth of Castanopsis fissa. And the research provided the basis for usage of the plat growth regulator in the production.