摘要
以河北农业大学选育的‘保定狗牙根’为试验材料,在50%遮荫胁迫下,采用3种浓度抗倒酯60、120、240μL·m-2对盆栽草坪进行喷施处理,探讨抗倒酯对遮荫胁迫下‘保定狗牙根’生长及草坪质量的影响。结果表明:施用6周后,喷施抗倒酯处理的狗牙根植株高度较对照显著降低了49.7%~55.0%,叶片长度和节间长度分别较对照缩短了52.2%~57.9%和43.0%~49.5%,叶片宽度和茎粗分别较对照增加了60.1%~76.6%和37.6%~68.8%,且均以高浓度处理效果最明显;试验期间,抗倒酯处理的狗牙根草坪外观质量综合评分较对照提高了10.2%~25.3%,叶片可溶性糖含量有所增加,但叶片PSⅡ最大光化学效率(Fv/Fm)无明显变化。表明喷施抗倒酯有助于改善‘保定狗牙根’草坪在遮荫胁迫下的表现。
Taking‘Baoding bermudagrass’selected by Hebei Agricultural University as the plant material,the experiment was conducted to determine the influence of trinexapac-ethyl(TE)on the growth and turf quality of bermudagrass under 50%shade.Trinexapac-ethyl was applied at 60μL·m-2,120μL·m-2 and 240μL·m-2 by spraying on separate containers.The results showed TE had significant effects on plant height,leaf and internode length,leaf width,stem diameter and turf visual quality of‘Baoding bermudagrass’under shade.After 6 weeks,the height,leaf length and internode length of TE-treated plants reduced by 49.7%to 55.0%,52.2%to 57.9%and 43.0%to 49.5%compared with non-TE-treated plants respectively,but leaf width and stem diameter significantly increased by 60.1%to 76.6%and 37.6%to 68.8%respectively with increasing TE rate.Trinexapac-ethyl enhanced turf visual quality by 10.2%-25.3%and increased the soluble sugar content to some extent during the study,but had no significant influence on Fv/Fm of leaves.The results suggested that TE was conducive to improve the shade performance of‘Baoding bermudagrass’.
作者
王新
孙熙喏
孙鑫博
赵佳愉
李会彬
WANG Xin;SUN Xinuo;SUN Xinbo;ZHAO Jiayu;LI Huibin(College of Agronomy,Hebei Agricultural University/Key Laboratory of Crop Growth Regulation of Hebei Province,Baoding,Hebei 071001)
出处
《北方园艺》
CAS
北大核心
2019年第22期76-82,共7页
Northern Horticulture
基金
河北省自然科学基金优秀青年资助项目(C2018204056)
河北省高等学校科学技术研究资助项目(Z2017004)
河北农业大学创新创业训练计划资助项目(2018135)
关键词
狗牙根
草坪草
遮荫
抗倒酯
草坪外观质量
bermudagrass
turfgrass
shade
trinexapac-ethyl
turf visual quality