烯效唑对匍匐翦股颖的矮化作用及生理指标的影响

Influence of Uniconazole on Dwarfing Effect and Physiological Indicators of Creeping Bentgrass

采用盆栽试验的方法,研究充足水分(100%田间持水量)和限制水分(50%田间持水量)条件下4种不同浓度(20mg/L、40mg/L、60mg/L、80mg/L)烯效唑处理对匍匐翦股颖形态和生理指标的影响。结果表明:在2种不同水分条件下,4个烯效唑浓度处理均使匍匐翦股颖的株高明显降低,适宜的烯效唑处理浓度(40mg/L、60mg/L、80mg/L)使匍匐翦股颖的叶片明显变短,且作用效果与浓度有关;适宜浓度的烯效唑使匍匐翦股颖叶片中脯氨酸含量、叶片相对含水量和根系活力明显提高,抗旱性增强,且调控作用与水分状况有关;综合考虑作用效果和成本,在匍匐翦股颖草坪养护管理中烯效唑的推荐使用浓度为60mg/L。

The potted experiment was implemented to study the effect of uniconazole of different concentrations （20mg/L.40mg/L. 60mg/L. 80mg/L） on morphological and physiological indicators of creeping bentgrass under the adequacy water （100% field capacity） and the limited water condition （50G field capacity）. The results showed that the height of creeping bentgrass treated with uniconazole of four concentrations was decreased distinctly, and leaves of creeping bentgrass treated with uniconazole of appropriate concentrations （40mg/L, 60mg/L, 80mg/L） were shortened significantly under the adequacy water condi- tion and the limited water condition respectively. The effects of uniconazole was different between concen- trations. The appropriate concentration of unieonazole increased the proline content, relative water content and the root vigor and enhanced the drought resistance of creeping bentgrass. The regulative effect of uniconazole was relevant to the water content in soil. The concentration of uniconazole recommended in practical turf management of creeping bentgrass considering its the effectiveness and cost was 60mg/L.