灌溉量和修剪高度对草地早熟禾草坪维持景观时长的影响  

Effect of irrigation quantity and mowing height on landscape maintaining duration of Kentucky bluegrass turf

作　　者：乌日图[1] 王建光[1] 徐军[1] 廖忠兴[1] 黄海洋[1] 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

出　　处：《草原与草坪》2016年第1期26-30,共5页Grassland and Turf

基　　金：国家自然科学基金(31460633);内蒙古自然科学基金(2013MS0401)资助

摘　　要：以草地早熟禾品种凯蒂(Katie)为供试材料,在室内进行盆栽试验,研究不同灌溉量和不同修剪高度对草地早熟禾草坪维持景观时长的影响,为草坪节水灌溉提供科学依据。结果表明:在同一修剪高度条件下,分别用灌溉量相当于田间持水量的85%,70%和55%对供试材料进行处理,结果彼此间存在显著性差异,灌溉量的增加促进地下植物量不断增加,草地早熟禾草坪的维持景观时长相应增加,灌溉量对草地早熟禾维持景观时长起积极影响,但灌溉量大于等于相当于田间持水量85%时,草地早熟禾草坪维持景观时长却不再有显著增加;同时,修剪草坪高度对草地早熟禾草坪景观时长有一定影响,研究发现随修剪高度的提高,草坪维持景观的时长在缩短,并且修剪高度为3cm时,能使草地早熟禾草坪维持景观时长达到最大值。The effect of the different irrigation amounts and pruning heights on landscape maintaining duration of Kentucky bluegrass（Poa pratensis cv.Katie）turf was studied with indoor pot experiment in order to provide scientific basis for water-saving irrigation.Results showed that there were significant differences in landscape maintaining duration among the irrigation amounts（85%,70% and 55% of field capacity）under the same mowing height.Along with the increase of irrigation amount,the underground biomass and landscape maintaining duration were increased.Irrigation amount showed a positive influence.However,the landscape maintaining duration did not significantly increase while the irrigation amount was more than 85% of field capacity.Meanwhile,along with the increase of mowing height,the landscape maintaining duration was shortened and the proper height was 3cm.

关 键 词：草地早熟禾 草坪 灌溉量 修剪高度 维持景观时长 

分 类 号：S688.4[农业科学—观赏园艺]