高寒地区高速公路边坡生态防护工程试验研究  

Experimental Research on Bioengineering Protection for Highway Slope in Alpine Regions

作　　者：孙寿 文辉 田波波 董新平[2] 

机构地区：[1]中交隧道局第二工程有限公司,西安710100 [2]郑州大学,郑州450001

出　　处：《路基工程》2018年第1期144-147,共4页Subgrade Engineering

摘　　要：根据青藏高原三江源地区高速公路生态防护工程施工的需要,以室内人工气候箱培养为手段,就草皮移植所涉及的草皮生长特性、移植厚度、是否需要施肥以及施肥种类和数量等关键参数开展了研究。结果表明:(1)施工区域土壤呈微碱性或弱碱性,有机质含量低,土壤贫瘠,P和N较为缺乏;(2)草皮移植施工中应采取施肥处理,肥料宜采用磷酸二铵,施肥量不宜小于250 kg/hm2;(3)草皮移植宜在冬季结束气温回升至15℃左右再进行,草皮成长过程中,应注意保温、保湿;(4)草皮厚度以不低于15 cm为宜。As required by construction of bioengineering protection for highways in Sanjiangyuan Region in Qinghai--Tibet Plateau, the key parameters in relation to grass sod transplant, such as sod growth features, transplant thickness, whether to need fertilization and the type and amount of fertilizer, were studied by means of indoor artificial climate box. The result shows that, （1） the soil in Sanjiangyuan region is slightly or weakly alkaline, with low content of organic matters, hence the poor soil is lack of P and N; （2） the grass sod transplant should be applied with fertilization which should adopt diammonium phosphate and be amounted not less than 250 kg/hm2 ; （3） the grass sod transplant should be carried out by the end of winter and at the time when the temperature goes up paid attention to in the growth to about 15 ℃, furthermore, thermal insulation and moisture retention shall be period; （4） the sod thickness should not be less than 15 cm.

关 键 词：高寒地区 高速公路 生态防护 草皮移植 厚度 施肥量 

分 类 号：U417.12[交通运输工程—道路与铁道工程]