摘要
为增强河道边坡抗冲刷能力,文章通过设置紫花苜蓿和黑麦草不同种植比例的植物边坡,开展冲刷试验,分析种植边坡土体的蒸发速率及植物对边坡土体抗冲刷性的影响。研究结果表明:植被生长对土壤蒸发速率的影响可划分为植物发育初期阶段、植物快速发育阶段及植物成熟稳定阶段,土体在植物生长期的蒸发速率最大值随着紫花苜蓿种植比例的提高呈现逐渐降低的趋势;边坡抗冲刷能力最强的为B组,E组略次之,C、D两组基本相同,A组最差,因此紫花苜蓿70%和黑麦草30%混合种植的护坡效果最好,同时紫花苜蓿种植比例较高,边坡土体水分蒸发速率较低,减少了种植前期的人工浇水量,降低了种植养护成本。
In order to enhance the anti-scouring ability of the river side slope,this paper carries out the scouring test by setting the plant side slopes with different planting ratios of alfalfa and ryegrass,and analyzes the evaporation rate of the plant side slope soil and the influence of plants on the anti-scouring ability of the side slope soil.The results show that the influence of vegetation growth on soil evaporation rate can be divided into the initial development stage of plants,the rapid development stage of plants and the mature and stable stage of plants,the maximum evaporation rate of soil in the plant growth period gradually decreases with the increase of alfalfa planting ratio;the strongest anti-scouring ability of the side slope is group B,followed by group E,group C and group D are basically the same,and group A is the worst,so the mixed planting of 70%of alfalfa and 30%of ryegrass has the best slope protection effect;at the same time,the proportion of alfalfa planting is higher,and the water evaporation rate of side slope soil is lower,which reduces the artificial watering amount in the early stage of planting and reduces the cost of planting and maintenance.
作者
程勇
CHENG Yong(Guangzhou Huaxia Vocational College,Guangzhou 510935,Guangdong,China)
出处
《工程技术研究》
2024年第18期213-215,共3页
Engineering and Technological Research
关键词
河道边坡
抗冲刷
植物边坡
蒸发速率
river side slope
anti-scouring
plant side slope
evaporation rate
