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采用高羊茅的 2个品种科伦那多和斗牛士 ,叶面喷施植物生长抑制剂脱落酸 (ABA)及生长促进剂细胞激动素 (KT) ,研究它们对草坪草株高、分蘖、抗高温特性的影响 ,结果表明 :①ABA、KT对草坪草降低株高 ,提高抗热性方面都有积极作用 ;②对分蘖来说 ,ABA对分蘖力较强的品种 (斗牛士 )促进作用明显 ,而对分蘖力弱的品种 (科伦那多 )却有降低分蘖作用 ;③ABA和KT都显著降低株高 ,其中对科伦那多这类株高本身较高的品种效果更好 ;④ABA和KT均可增加草坪草的抗热性 ,其中以ABA的效果较好。喷施ABA和KT能提高草坪草抗热性 ,是安全越夏的有效措施。
Two varieties of tall fescue, Coronado and Matador, were sprayed with ABA and KT. Their effects on the plant height, tillering, The results showed that: ①ABA and KT had a positive effect on turfgrass decreasing plant height and increasing heat resistance; ②As for tillering, ABA had a significant promoting effect on maturing varieties with high tillering ability , But weak tillering ability (Coronado) reduced the tillering effect. (3) ABA and KT significantly reduced plant height, which was more effective for Coronado plants with higher plant height itself. (4) ABA and KT can increase the heat resistance of turf grass, ABA is better. Spraying ABA and KT can improve turfgrass heat resistance, it is safe and effective summer.