城市绿化中,不论是街道绿化带,还是公园、庭院,都离不开草坪.但由于管理不得法或疏于管理,目前草坪退化现象较为严重,常出现枯梢、斑秃、块秃,甚至成片死亡.现根据生产实践,将草坪退化原因与防治方法归纳如下,供同行参考.1.草体过密直播或分植的草坪,在头两年表现较好,以后随着草体生长,地上草层变得厚密,地下根系盘结 In the afforestation of the city, no matter the green belt of the street, the park or the courtyard, the lawn can not be separated from the lawn, but because the management is not law or neglected, the lawn degeneration phenomenon is more serious at present, often appear the twig, alopecia areata, According to production practices, the lawn degeneration causes and methods of prevention and treatment are summarized as follows for peer reference.1 Lawn densely sowed or planted lawn, performed well in the first two years, later with the grass growth, ground grass Layer becomes thick, root underground system