| 神延铁路路基植物护坡植苗及灌溉技术初探 |
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| 引用本文： | 初长海.神延铁路路基植物护坡植苗及灌溉技术初探[J].中国沙漠,2002,22(3):304-307. |
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| 作者姓名： | 初长海 |
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| 作者单位： | 甘肃省林业科学研究所, 甘肃 兰州 730020 |
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| 摘 要： | 针对神延铁路边坡坡度大、表层土质坚实问题和尽量减少对坡面破坏性施工的要求,在植物护坡工程中,用自制缝植锹植苗,自制注水器灌溉,保证了护坡工程的顺利实施。结果表明:采用植苗锹进行缝植,一是能满足陡坡作业要求。锹板坚固锋利,用脚踏可穿透包坡的硬粘土层以减小对坡面的破坏程度;二是提高工效,缝隙植苗一次性完成;三是缝隙深度可达40cm,能完成植苗深栽20cm以下的工程设计要求。采用注水灌溉,一是克服了坡度陡坡面光滑,不利水分下渗,植苗补水不到位,灌溉操作难度大的困难;二是注水器可插入土壤深度15~ 20cm以下对苗木根系处进行补水,抑制了土壤表层水分的蒸发,提高了有限水利用率;三是延长补水周期,降低拉水投入成本,增强植苗的抗旱能力。经采用上述技术措施,栽植的灌木紫穗槐(Amorpha fruticosa)苗木平均成活率达85%以上,边坡覆盖度超过90%,根系多分部在土壤20~ 40cm深处,主根平均长度50cm。
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| 关 键 词： | 植物护坡 缝植 注水灌溉 |
| 文章编号： | 1000-694X(2002)03-0304-04 |
| 收稿时间： | 2001-03-15 |
| 修稿时间： | 2001年3月15日 |
A Primary Discussion on Transplant and Irrigation Techniques of Railway Slope-protection Engineering with Plant |
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| CHU Chang-hai.A Primary Discussion on Transplant and Irrigation Techniques of Railway Slope-protection Engineering with Plant[J].Journal of Desert Research,2002,22(3):304-307. |
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| Authors: | CHU Chang-hai |
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| Institution: | Gansu Forestry Science and Technology Research Institute, Lanzhou 730020, China |
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| Abstract: | In the light of the hardness of the Shenmu-Yanan railway roadside slope is high, surface soil is rigid and the need of decreasing the damages to original railway slope-surface, the crack-transplant method with transplant shovel and water-injection irrigation method with water-injector were created during slope-protection engineering with plant. The results indicated that by adopting crack-transplant method with transplant shovel can: ①meet the steep-slope operation need and reduce the damages to railway slope\|surface because of the transplant shovel sharpness and its penetration ability through railway roadbed clay layer, ②raise operation efficiency because of the once-time completement of transplant,③meet the need of over 20 cm transplant depth because of the over 40 cm cave depth dug by transplant shovel; by adopting water-injection irrigation method with water-injector can: ①conquer the hardness of the water infiltration on the slope-surface and the water-lack around the roots of transplanted-trees because of the steep slope and smooth slope-surface, ②control the water evapo transpiration of soil surface and improve the utilization rate of limited water resources because of the over 15~20 cm cave depth dug by transplant shovel, ③postpone water-supplement period, lower water-irrigation cost and increase the fighting-drought ability of transplanted-trees. Through above technique measures, the average survival rate of transplanted-trees reached 85%, roadbed transplanted-trees coverage surpassed 90%, the roots of transplanted-trees distributed at the soil depth between 20~40 cm and the main root average length is 50 cm. |
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| Keywords: | slope-protection engineering with plant crack-transplant method water-injection irrigation |
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