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Position: Home > Articles > Effect of different grass species combination on highway slope protection Grassland and Turf 2007 (3) 33-37

不同草种混播组合在公路边坡的建植效果研究

作  者:
马海霞;王柳英
单  位:
青海省畜牧兽医科学院草原所;青海大学草业科学系
关键词:
公路边坡;混播组合;植物量;丰富度指数;多样性指数
摘  要:
在青海省高速公路边坡进行不同牧草与灌木混播试验,结果表明,出苗最快的为苜蓿+扁穗冰草,盖度增加也最快,到2005年9月盖度已达70%,赖草+柠条组合盖度变化较大,从2005年的5%增加到次年的90%,且生物多样性最大,群落稳定性最强。地上植物量(干重)增加最快的组合为扁穗冰草+星星草+沙棘,从2005年9月的40 g/m2增加到2006年10月的1200 g/m2。在短期内,适宜当地阴坡种植的优良组合为扁穗冰草+星星草+沙棘,阳坡为苜蓿+扁穗冰草,不同混播组合的建植效果排序如下:扁穗冰草+星星草+沙棘>苜蓿+扁穗冰草>柠条+赖草>其他。
译  名:
Effect of different grass species combination on highway slope protection
作  者:
MA Hai-xia1,WANG Liu-ying2(1.Dept.of Pratacultural Science,Qinghai University,Xining 810016,China;2.Research Institute of Grassland Science,Academy of Animal Husbandry & Veterinary Science of Qinghai Province,Xining 810003,China)
关键词:
Combination of mixed planting;phytomass;richness index;diversity index
摘  要:
Among the combination treatments,Agropyron cristatum +Medicago sativawas the best for seedling speed and coverage increasing(achieved 70% in September2005).The coverage of Caragana korshinskii +Leymus secalinus.greatly varied and increased from 5% in 2005 to 90% in 2006,and the plant biodiversity index was also the highest.The best combination for aboveground biomass(dry weight base) increasing speed was Agropyron cristatum+Puccinellia tenuiflora+Hippophae rhamnoides and it increased from 40 g/m2 in September 2005 to 1 200 g/m2 in October 2006.The proper combination on north facing slope was Agropyron cristatum+Puccinellia tenuiflora+Hippophae rhamnoides and the combination of Agropyron cristatum+Medicago sativawas the best on the south-facing slope.The performance order of different combinations was as follows: Agropyron cristatum+Puccinellia tenuiflora+Hippophae rhamnoides>Agropyron cristatum+Medicago sativa>Caragana Korshinskii+Leymus secalinus>the rest.

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