烯效唑对匍匐翦股颖的矮化作用及生理指标的影响

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.

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

The potted experiment was implemented to study the effect of uniconazole of different con- centrations (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 (50% field ca- pacity). The results showed that the height of creeping bentgrass treated with uniconazole of four concen- trations 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 uniconazole increased the proline content, relative water content and the root vigor and enhanced the drought resistance of creeping bentgrass. The regulative effect of uni- conazole was relevant to the water content in soil. The concentration of uniconazole recommended in prac- tical turf management of creeping bentgrass considering its the effectiveness and cost was 60mg/L.