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通过盆栽试验,研究了不同浓度的4种生长调节剂对多年生黑麦草(Lolium perenne)株高、叶长、叶宽、分蘖数及地上部植株鲜、干质量的影响。结果表明,多效唑和矮必施对多年生黑麦草株高、叶长及地上部植株鲜、干质量的抑制作用显著,但浓度过高会对草坪造成较大损伤。因此,建议选用浓度为200mg.L-1的多效唑和375mg.L-1的矮必施作为多年生黑麦草的化学修剪药剂。
Pot experiments were conducted to study the effects of four kinds of growth regulators on plant height, leaf length, leaf width, tiller number and fresh and dry weight of perennial plants in perennial ryegrass. The results showed that paclobutrazol and dwarf mustard had significant inhibitory effects on plant height, leaf length and shoot fresh weight and dry weight of perennial ryegrass. However, excessive concentrations of paclobutrazol and dwarf will cause greater damage to lawn. Therefore, the recommended concentration of 200mg.L-1 paclobutrazol and 375mg.L-1 dwarf must be applied as perennial ryegrass chemical trimmed agent.