海南岛西南部地区人工草地退化严重,非利用性杂灌已逐渐取代了人工牧草成为优势种。作者于1988年8～10月对这些人工草地进行了全面调查,记录评价20余种对人工草地有害的植物,根据分布密度及危害情况将其分为五级,最主要的有害植物是飞机草、黄荆、牛筋果、赤才。 The artificial grassland in the southwestern part of Hainan Island has been seriously degraded. Non-utilization stray irrigation has gradually replaced artificial forage as the dominant species. The authors conducted a comprehensive survey of these artificial grasslands from August to October 1988, and recorded and evaluated more than 20 kinds of plants that are harmful to artificial grassland. According to the distribution density and the hazard situation, they were divided into five levels. The most important harmful plant was the plane grass , Huang Jing, tendon, red before.