草坪具有净化空气、吸附尘埃，防止噪音，抗污吸毒，减少水土流失，改良土壤结构，减缓太阳辐射，保护和恢复视力，绿化、美化城市，改善城市生态等作用，草坪面积不断扩大。但国内草坪一般 3～ 5年便退化、荒废，甚至有的草坪育成以后就发生草荒。而国外养护技术完善的草坪 The lawn has the functions of purifying air, adsorbing dust, preventing noise, resisting pollution and taking drugs, reducing water and soil loss, improving soil structure, slowing down solar radiation, protecting and restoring eyesight, beautifying and beautifying the city and improving urban ecology, and the lawn area is continuously expanding. But the domestic lawn generally 3 to 5 years will degenerate, abandoned, and even some lawn grass breed occurred later. The well-maintained foreign technology lawn