植物生长延缓剂多效唑和烯效唑对紫羊茅生长的影响

目的]推动我国北方高质量草坪的建立。方法]用不同浓度多效唑PP333（100、200、350 mg/L）和烯效唑S3307（16、32、64 mg/L）对冷季型草坪草紫羊茅进行叶面喷施,以喷清水为对照,研究不同处理对紫羊茅生长及叶绿素含量的影响。结果]PP333对紫羊茅高生长的抑制作用随喷施剂量的增加而增强,喷药60 d后,3个处理对紫羊茅高生长的抑制率分别为53%、62%和64%;喷药60 d后,对照株高增长24.53 cm,不同浓度S3307处理紫羊茅株高分别增长13.05、11.60、13.68 cm;浓度大于200 mg/L的PP333对紫羊茅的矮化效果较明显,200 mg/LPP333与16 mg/LS3307可显著提高紫羊茅的叶绿素含量。结论]PP333对紫羊茅的矮化作用强于S3307。

Effects of Plant Growth Retardants Paclobutrazol and Uniconazole on Growth of Festuca Rubra

Objective] The study was to promote the establishment of high quality lawn in north China.Methods] The cool-season lawn grasses Festuca rubra were treated by foliage spray with different concns.of paclobutrazol PP333(100,200,350 mg/L) and uniconazole S3307(16,32,64 mg/L),with the treatment of spraying clear water as CK,the effects of different treatments on growth and chlorophyll content of Festuca rubra were studied.Results] The inhibition of PP333 on height growth of Festuca rubra was increased with th...