Cultivation Tests of Four Landscape Plant Materials under High Gravel Conditions

In order to select suitable plant materials for highway landscape corridor development,Plantation tests of Photinia fragrans, Pyracantha fortunei, Amorpha fruticosa and Plum fruticosa were carried out on the highway slope of Bashan Grand Canyon in Xuanhan County, Dazhou City, Sichuan Province. The results showed that the survival rate of container seedlings of Pyracantha fortunei, Photinia rubra and Robinia pseudoacacia nude root seedlings was over 85% and the preservation rate was over 80%. The growth rate of bare root seedlings of P. fruticosa from tree height, base diameter and crown width was the highest, followed by Pyracantha fortunei and Photinia fortunei, and the bare root seedlings of P. fruticosa were significantly lower than other species.