南通大学学报（自然科学版）

在京杭运河两淮段航道右岸选取3处大小为10 m×100 m的滩地作为试验区,针对常年干旱、季节积水、长期积水3种不同地区特点,分别采用挖根带土栽植、根状茎栽植、苇坨深水栽植3种方案栽植芦苇.实验观察其根系生长规律,分析研究芦苇在不同水深河道滩面上的固土护坡、消浪效果.结果表明:长期积水地区的芦苇地下茎细,节间短,节数居中,表层须根最多,芦苇密度最大,不空根的长度一般在20～30 cm,最长可达30～50 cm,组成了典型的须系,消浪效果最明显.苇坨深水栽植是京杭运河两淮段最佳的生态护坡方案.

Three experimental spots at the right bank of Beijing-Hangzhou Canal Huaian-Huaiyin section were selected to adopt 3 different projects of reed planting-ball planting,bulb planting and deep water planting,in terms of their characteristics of long-term drought,seasonal waterlogging and long-term waterlogging respectively.The root growth,the effects of soil fixation and bank revetment,and wave absorption of weed growing in various beaches,where the water depth of channels is different,were investigated.The results show the reed growing in the long-term waterlogging beach had thin underground stems,short rhizome,average number of rhizomes and the largest number of fibrous roots.The length of adventitious roots usually ranged from 20 to 30 cm,and occasionally reached up to 50 cm,consisting of typical fibrous root system.Besides,in this area the reed planting had the best effect of wave absorption.It is proved that deep water reed planting is the optimal program for bank revetment in Beijing-Hangzhou Canal Huaian-Huaiyin section.