多效唑对紫穗槐抗旱节水的形态作用研究  

The effects study of paclobutrazol on amorpha fruiticosa drought resistance and water saving morphology

作　　者：范志霞[1,2] 李绍才[1] 孙海龙[3] 

机构地区：[1]四川大学生命科学学院,成都610064 [2]四川农业大学风景园林学院,温江611130 [3]四川大学水力学与山区河流开发保护国家重点实验室,成都610064

出　　处：《四川大学学报（自然科学版）》2017年第3期648-652,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：国家科技支撑计划课题(2013BAJ02B03)新型立体绿化卷材研究与产业化

摘　　要：为了研究多效唑对紫穗槐的抗旱节水的形态效应,开展了6水平不同浓度的多效唑对紫穗槐的盆栽试验,对紫穗槐的形态指标进行了测量.结果表明:多效唑有效抑制了紫穗槐的株高、叶面积、盖度、冠幅、基径,增加了紫穗槐的株数和叶色.适当浓度的多效唑能增大紫穗槐的盖度、冠幅、基径,增加水土保持效果和抗倒伏性.综合考虑,D4多效唑浓度下不仅可以有效降低紫穗槐株高和叶面积,减少养分水分需求和水分蒸发,增强抗旱性,还可以增大盖度、冠幅、基径,加深叶色,增强水土保持效果和保持良好的景观效果,故这个浓度最佳.In order to study the drought resistance and water saving morphology effects of pacolbutrazol on A. fruiticosa, the pot experiment was carried out of six levels paclobutrazol applied on A. Fruitico- sa, the morphology indexes were measured. The results showed that paclobutrazol inhibited effectively the height, leaf area, coverage, crown width, base diameter, increased the numbers and leaf colour. The proper concentration paclobutrazol could increase the coverage, crown width, base diameter, lift water and soil conservation effect and lodging resistance. Total consideration,D4 not only inhibited the height and leaf area of A. fruiticosa, decreased nutrient and water needs and water evaporation, increased drought resistance,increased coverage, crown width, base diameter,leaf colour to improve water and soil conservation and landscape effect, so D4 was the optimum concentration.

关 键 词：多效唑 抗旱节水 紫穗槐 

分 类 号：Q945[生物学—植物学] X45[环境科学与工程—灾害防治]