浙江农业学报 ›› 2023, Vol. 35 ›› Issue (4): 841-852.DOI: 10.3969/j.issn.1004-1524.2023.04.11

• 园艺科学 • 上一篇    下一篇

植物生长调节剂对狗牙根生长特性及坪用质量的影响

邓丕超()   

  1. 湖南高尔夫旅游职业学院 高尔夫教育学院,湖南 常德415000
  • 收稿日期:2021-12-13 出版日期:2023-04-25 发布日期:2023-05-05
  • 作者简介:邓丕超(1979—),男,湖南汉寿人,硕士,副教授,主要从事高尔夫球场管理方面的研究。E-mail:302725056@qq.com
  • 基金资助:
    湖南省教育规划办“十三五”规划课题(XJK17BZY008);2019年度湖南省职业院校教育教学改革研究项目(ZJGB2019380)

Effects of plant growth regulators on growth characteristics and turf quality of bermudagrass

DENG Peichao()   

  1. College of Golf Education, Hunan Golf and Tourism College, Changde 415000, Hunan, China
  • Received:2021-12-13 Online:2023-04-25 Published:2023-05-05

摘要:

以运动百慕大狗牙根(Cynodon dactylon× C. trasvalensis cv. Tifsport)为材料,研究不同浓度生长调节剂(抗倒酯、矮壮素、多效唑、敌草快、乙烯利和赤霉素)对狗牙根生长特性及坪用质量的影响,以期为狗牙根营养体扩繁利用相关的植物生长调节剂产品提供理论依据。结果表明:经隶属函数分析,各植物生长调节剂的推荐施用浓度为:抗倒酯2.0 kg·hm-2、矮壮素2.0 kg·hm-2、多效唑0.5 kg·hm-2、敌草快0.1 kg·hm-2、乙烯利2.0 kg·hm-2和赤霉素0.02 kg·hm-2。在各植物生长调节剂推荐施用浓度下,除敌草快处理外(0.1 kg·hm-2时,损伤率就达15.3%),其他5种植物生长调节剂处理均未造成狗牙根的损伤。外施多效唑不影响狗牙根的叶色(施用多效唑后叶色评分仍在7.0以上)。与对照相比,外施抗倒酯、矮壮素、多效唑和乙烯利均明显降低狗牙根的高度和叶长(下降幅度均超过20%)。喷施乙烯利后的所有浓度处理,其匍匐茎数量无明显变化,喷施敌草快和赤霉素后可显著降低狗牙根匍匐茎的数量。敌草快不适宜用作生长抑制剂来控制狗牙根草坪草的生长。施用2.0 kg·hm-2的抗倒酯,可以有效抑制狗牙根匍匐茎和节间长度,喷施此浓度下的抗倒酯,对狗牙根匍匐茎的数量和坪用质量未产生不良影响。

关键词: 狗牙根, 抗倒酯, 矮壮素, 赤霉素, 敌草快

Abstract:

To provide theoretical basis for the expansion of bermudagrass vegetations, Cyndon dactylon × C. trasvalensis cv. Tifsport was used as the material to study the effects of different concentrations of growth regulators (antitransexate, chlormequat, paclobutrazol, diquat, ethephon and gibberellin) on the growth characteristics and turf quality of bermudagrass. The results demonstrated that according to the subordinate function, the recommended application concentrations of the plant growth regulators were as follows: 2.0 kg·hm-2 of trinexapac-ethyl, 2.0 kg·hm-2 chlormequat chloride, 0.5 kg·hm-2 paclobutrazol, 0.1 kg·hm-2 diquat, 2.0 kg·hm-2 ethephon and 0.02 kg·hm-2 gibberellin. At the recommended application concentration of each plant growth regulator, except diquat treatments (applied at 0.1 kg·hm-2 caused 15.3% of damage rate), the other five plant growth regulators did not cause damage at the recommended concentrations. Paclobutrazol did not affect the leaf color (the leaf color score was still more than 7.0). Compared with the control, the height and leaf length were significantly reduced by the application of trinexapac-ethyl, chlorocholine chloride, paclobutrazol and ethephon (the decline rate was more than 20%). The number of stolons had no significant change by application of ethephon at all concentrations, but diquat and gibberellic acid could significantly reduce the number of stolons. Diquat was not suitable as a growth inhibitor to control the growth of bermudagrass. Application at 2.0 kg·hm-2 trinexapac-ethyl inhibited the stolon and internode length showed and no effect on the stolon number and turf quality of bermudagrass.

Key words: Cynodon dactylon, trinexapac-ethyl, chlorocholine chloride, gibberellic acid, diquat

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