Effects of ecological ditches with different plant combinations on surface nitrogen and phosphorus pollution adsorption
An ecological ditch was selected as the research object near the Pearl Lake in Liaozhong District,Shenyang City,and different plant combinations were configured to construct an ecological ditch.Three plant combinations were designed for barnyardgrass+reed,crabgrass+cloverleaf,wild scorpion+waterweed,and the results showed that the three plant combinations had an adsorption effect on nitrogen and phosphorus,and the total nitrogen removal rate was different.Barnyardgrass+Phragmites australis(87.68%)>Crabgrass+Triangle grass(83.42%)>Ye Cigu+Pondweed(79.37%);the total phosphorus removal rate is Barnyardgrass+Phragmites australis(85.24%)>Crabgrass+Triangulum(79.25%)>Yescigu+pumpkins(77.69%).
Ecological ditchesnitrogen and phosphorus pollutionplant combination