狗牙根草坪冬季盖播黑麦草的可行性研究

The feasibility study of winter overseeding on bermudagrass turf

用 2种黑麦草在广州赛马会高尔夫球练习场的狗牙根草坪上进行了冬季盖播可行性试验。结果表明 ,冬季盖播黑麦草后 ,盖播处理区的狗牙根草坪同没有盖播的对照区草坪相比 ,绿期延长 ,同时其它坪用性状也明显提高 ,因而证明 ,在广州地区的狗牙根草坪上用黑麦草进行加绿盖播是完全可行而必要的。同时试验结果表明 ,草坪型黑麦草盖播草坪的坪用性状远远好于牧草型黑麦草的盖播处理。此外 ,合理的施肥和播量等因素也将直接影响盖播草坪的冬季坪用性状以及夏枯时狗牙根草坪的恢复生长。播量以 2 0 g/ m2 最为理想 ,可根据建植和管理水平酌情增减。生长前期以高施肥 (90 g/ m2 )为宜 ,夏枯前后的过渡阶段 ,以低施肥 (4 5g/ m2 )为佳。

Two ryegrass varieties of a perennial turf type “Cutter” and a annual pasture type “Rust” were used to overseeding into bermudagrass ( Cynodon dactylon ) turf in Guangzhou Jockey Club, Guangzhou, China. The results showed that, compared to unoverseeded turf, winter overseeding with ryegrasses over established bermudagrass turf had longer green period and better quality. Performance of the turf overseeded with turf type ryegrass was better than that of those with pasture type ryegrass. Meanwhile, reasonable seeding volume and fertilization were able to affect the turf quality in winter as well as restoration and development in summer.