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两种植物生长延缓剂对盆栽日香桂的矮化效应

Journal of Nanjing Forestry University (Natural Science Edition)(2014)

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Abstract
采用不同浓度的植物生长延缓剂多效唑与比久对盆栽2年生日香桂进行叶面喷施处理,研究不同处理对日香桂矮化的影响。结果表明:在适宜浓度梯度范围内,随着植物生长延缓剂施用量的加大,矮化效果增强,新枝高生长量明显受到抑制,节间长度缩减,地径增粗,根冠比增加,根系活力提高,叶色变浓绿,叶绿素含量提高。但过高浓度矮化剂处理会产生药害现象。经药效综合评分法确定,500 mg/L 多效唑和3000 mg/L 比久对日香桂的矮化效果最好。
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Key words
paclobutrazol,daminozide,Osmanthus fragrans ‘Rixiang Gui’,dwarfing effect,plant growth retardant
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