Study on establishment of airport maintenanle free lawn A case study at Kunming Wujiaba airport Pennisetum clandestinum lawn

To improve the airport flight safety and remove the hidden danger of birdstrike, 1.5 ha native lawn at Kunming Wujiaba airport was used to establish Pennisetum clandestinum lawn. The native law was preparated by Disc plough and divided into 5 experimental plots, in which P. clandestinum cuttage were planted with four densities (20, 40, 60 and 80 cm row and individual plant spaces). The results showed that the most economic density was 80 cm row and individual plant space. P. clandestinum exhibited well competition with the native species at the airport. The P. clandestinum lawn became nomaintenance lawn at the first established year and cost lower for continual 6 years at Kunmibg Wujiaba airport. The hidden danger of birdstrike was largely reduced because of bird food absent, lower and denser grass layer. The decibel sound through the P. clandestinum lawn was also significant reduced by 15.7% compared to the native lawn (P＜0.01). It was suggested that P. clandestinum was the top choice pasture species to establish maintenance free lawn of Kunming Wujiaba airport.