摘要
通过盆栽试验,对多效唑和烯效唑两种药剂共5个浓度对草地早熟禾Crest和Alpine两个品种的分蘖和根的生长特性的影响进行了研究。结果表明:多效唑和烯效唑都能有效地提高Crest和Alpine的分蘖数,并且分蘖数随施药浓度的增大而增加,多效唑的适宜用量为50 mg/m2,烯效唑为20 mg/m2。多效唑和烯效唑都可以促进Crest和Alpine根系的生长,可促进根增长,增粗和侧根发生,从而使根重增加,促进根系生长的最适用量多效唑为25 mg/m2,烯效唑为20 mg/m2。由于根重的显著增加,茎叶重相对降低,根冠比变小。
Based on pot experiment,tillering and root growth of Poa pratensis cv. Crest and Alpine treated with 2 plant growth retardants,paclobutrazol （PP333） and uniconazole （S-3307） ,were studied. The results indicated that： PP333 and S3307 with different concentration significantly improved the tillering of Poa pratensis cv. Crest and Alpine,and treatment A3 （100.0 mg/m^2）was the best among all treatments. PP333 and S3307 also enhanced the R/T （root/tiller） of Poa pratensis cv. Crest and Alpine,promoted the root growth at the low concentration,meanwhile, they thickened the root, improved the development of secondary roots,increased the root biomass at the high concentration.
出处
《草原与草坪》
CAS
2005年第6期37-40,共4页
Grassland and Turf
基金
甘肃省教育厅科研项目"西北地区草坪延长绿期的措施及机理研究"编号032-05
关键词
多效唑
烯效唑
草地早熟禾
分蘖
根生长
paelobutrazol （PPaaa）
unieonazole （S3307）
Poa pratensis ev. Crest and Alpine
tillering
root growth
