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南京市公园草坪的草种以狗牙根和天鹅绒草为主。公园游客众多,鸟类活动频繁,因此将一些杂草种子带进了草坪,在草坪中萌发、生长、繁殖。草坪杂草种类多、生长分散,人工防除难度大,特别是多年生杂草和一些繁殖快的杂草,如不及时清除,短时间内就会使草坪变成荒草地。玄武湖公园有些草坪受白车轴草、车前、早熟禾等多种杂草为害,造成狗牙根草成片死亡。这些杂草不仅损害草坪的美观,游人在草坪上休息时也易污染衣服。
Nanjing Park lawn grass bermudagrass and velvet grass-based. Many tourists park, birds frequent activities, so some of the weeds seeds into the lawn, in the lawn germination, growth and reproduction. Lawn weeds and more variety, growth and dispersion, artificial control difficult, especially perennial weeds and some breeding fast weeds, if not promptly cleared, will make the lawn a short time to wasteland. Some lawn in Xuanwu Lake Park is damaged by various weeds, such as white clover, plantain and bluegrass, resulting in the death of bermudagrass. These weeds not only damage the beauty of the lawn, visitors also easily pollute the clothes when resting on the lawn.