疏浚淤泥生态固坡种植改良技术研究

Study on Ecological Slope Protection&Planting Improvement Technique of Dredger Mud

为了提升河道堤防的生态景观功能,保障河道安全流畅,同时解决疏浚淤泥处置难的问题,提出室内生态固坡种植改良的试验研究,对护坡王、四季青和波斯菊在不同固化改良种植土中的生长性能、栽培土的理化性能进行测试,并评价了栽培土的重金属污染风险。试验结果表明:采用2.0%CLF-1固化剂、10.0%菇渣、10.0%木屑、10.0%草炭和1.5%植物纤维作为固化改良材料,植物生长状态更佳、固坡效果更良好,且环境风险小;后期河道堤防生态护坡植物建议选用生长周期短、适应性强、根系生长旺盛、固坡作用强的护坡王。

In order to improve the ecological landscape function of river dike,ensure its safety and flowing,and solve the problem of difficulty in dredged mud disposal,this paper presented an experiment on ecological slope protection and planting improvement.It tested different soil’s plant growth performance and soil physical-chemical properties of ryegrass,holly and coreopsis.And it evaluated its risk of heavy metal pollution.The experimental results show that it recommends 2%CLF-1 curing agent,10%mushroom residue,10%wood dust,10%peat and 1.5%plant fiber as curing modified materials with better plant growth,better slope fixation effect,and less environmental risk.In the later period,it is suggested to choose ryegrass with short growth period,strong adaptability,vigorous root growth and strong slope fixation.