植物生长调节剂对提高冷季型草坪草抗热性的研究  

Study on the effect of plant growth regulators to improve heat tolerance of cool season turfgrass

作　　者：应武[1] 陈锦新[2] 张国平[2] 

机构地区：[1]浙江省杭州市农业科学研究所,浙江杭州310008 [2]浙江大学农学系,浙江杭州310029

出　　处：《草业科学》2002年第9期55-57,共3页Pratacultural Science

摘　　要：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。In the trial two tall fescue cultivars, i.e. Colarato and Matador were used as the materials, and plant growth accelerator cytokinin(KT) and plant growth inhibitor abscisic acid(ABA) were leafsurface sprayed, to study the effect of PGRs treatments on plant height, tillering and heat tolerance of turfgrass. The main results were as follows: both ABA and KT showed the positive influence in reduction of plant height and enhancing heat tolerance; in case of tillering, ABA had obviously stimulating effect for the cultivar (Matador) with strong tillering, but showed the inhibited effect for the cultivar(Colarato) with weak tillering; both ABA and KT significantly reduced plant height, particularly for the cultivar Colarato with higher plant height; both ABA and KT enhanced heat tolerance of two turfgrasses, with ABA having better effect. Spraying ABA and KT is the suitable practice for improving heat tolerance and over summering of turfgrass.

关 键 词：植物生长调节剂 冷季型 草坪草 抗热性 

分 类 号：S482.8[农业科学—农药学]