赤霉素和氯化胆碱对尾叶桉幼苗生理指标的影响

目的]探讨富含微量元素的生物活性肥添加赤霉素和氯化胆碱2种植物生长调节剂的复合制剂对尾叶桉幼苗生理的影响。方法]采用8种药剂组合对盆栽尾叶桉幼苗进行试验,研究其对尾叶桉幼苗叶绿素含量、净光合速率、蒸腾速率等生理指标的影响。结果]不同的药剂组合对尾叶桉幼苗的生理影响效果不同。从总体上看,养生肽0.1 ml+氯化胆碱30 mg+赤霉素10 mg和氯化胆碱30mg+赤霉素10 mg的处理能明显提高尾叶桉幼苗的净光合速率、蒸腾速率、气孔导度及水分利用效率。结论]赤霉素和氯化胆碱对尾叶桉幼苗的生长具有一定的促进作用,植物生长调节剂在进一步促进桉树生长方面具有很大的潜力,值得进一步研究开发。

Effect of Gibberellic Acid and Choline Chloride on the Physiological Indices of Eucalyptu urophylla Seedlings

Objective] To explore the effects of physiological variations that the complex preparations,which were made up of the biological active fertilizers rich in trace elements and the gibberellic acid and choline chloride,on the growth of Eucalyptu urophylla.Method] Pot experiment was used in the paper to study changes of physiological indices of chlorophyll content,net photosynthetic rate,transpiration rate and so on of Eucalyptu urophylla seedlings caused by eight kinds of complex preparations.Result] The effects caused by different treatments on the physiological indices of Eucalyptus urophylla seedling were different.General analyses showed that the treatment with 0.1 ml peptide,30 mg choline chloride and 10 mg gibberellic acid as well as the treatment with 30 mg choline chloride and 10 mg gibberellic acid could obviously improve net photosynthetic rate,transpiration rate,stomatal conductance and water use efficiency of Eucalyptus urophylla seedlings.Conclusion] The gibberellic acid and choline chloride had a certain effects on the growth of Eucalyptu urophylla seedlings,therefore,plant growth regulators will have great potential to promote the growth of Eucalyptus and it is worthy of being further researched and developed.