灌溉水钠吸附率及灌溉强度对匍匐翦股颖生长和外观质量的影响  

Effects of saline irrigation on growth and visual quality of creeping bentgrass

作　　者：王胜[1,2] 常智慧[1] 韩烈保[1] 

机构地区：[1]北京林业大学草坪研究所,北京100083 [2]重庆市风景园林科学研究院,重庆401329

出　　处：《草原与草坪》2012年第6期37-41,47,共6页Grassland and Turf

基　　金：国家林业局林业科学技术推广项目"裸露坡面植被恢复综合技术示范推广[(2011)31]"资助

摘　　要：通过模拟不同盐浓度的灌溉水钠吸附率(SARw)及灌溉强度对匍匐翦股颖Seaside II在沙质土壤上的生长和外观质量进行了评估,同时,还测定了盐水灌溉对根层土壤电导率的影响。结果表明,不同盐浓度处理,以SARw=0处理的草坪生物量和草坪外观质量均为最高。不同灌溉强度处理,均以过量灌溉(120%)处理的草坪生物量和草坪外观质量为最高,但和其余处理差异不显著(P<0.05),不同深度根层土壤电导率,各处理均以0～10cm为最大,以30～40cm为最小,总体上随着土层深度增加而降低。The paper studied the effects of saline irrigation with different SARw and different irrigation level on growth and visual quality of creeping bentgrass cultivar, ＂Seaside II＂ ,as well as electric conductivity in soil. The results indicated that the biomass and visual quality in soil-based putting green was better than in sand- based putting greens in first 9 weeks under treatments. However,there were not difference in both greens under the treatments after 11 weeks. The inhibition of turf biomass and decrease of visual quality were increased as the irrigation increased from ET 60% to 100% . Among all treatments,the turf biomass and visual quality were best as SARw= 0.0. Under the saline irrigation,the response of sodium adsorbing by biomass was sensitive than by visual quality. In general, the soil electric conductivity decreased as the soil depth increased, indicating that salinity accumulation was more easily occur at the upper layer of the rootzone.

关 键 词：匍匐翦股颖 盐水灌溉 灌溉强度 草坪生物量及外观 

分 类 号：S688.4[农业科学—观赏园艺]