春播冷季型草坪草苗期管理措施对草坪建植质量的影响

Effects of Seedling Period Managements on the Turf Establishment Quality of Spring Sowing Cold Season Turfgrasses.

研究结果表明，北京地区春季播种的匍匐剪股颖、草地早熟禾和高羊茅三种冷季型草坪草，播后施氮肥并防除杂草，较单独施氮肥或单独防除杂草明显地提高了苗期草坪盖度，增加了草坪草种苗的地下和地上生物量，缩短了成坪所用时间；除草地早熟禾单独施氮肥、单独防除杂草和对照处理外，三种草坪草的各处理均在进入炎热的夏季前成坪；防除杂草可明显地提高三种草坪草的分蘖能力，增加草坪密度；草地早熟禾较匍匐剪股颖和高羊茅对杂草更为敏感，草地早熟禾单独防除杂草较单独施氮肥处理能获得较高的种苗地下。

Effects of seedling period managements to spring sowing cold season turfgrass creeping bentgrass, kentucky bluegrass and tall fescue on the turf establishment quality were studied in Beijing Areas. The results showed that turf cover, seedling underground and aboveground biomass of three turfgrasses for supplied nitrogen + contro weed treatment were obviously higher and their establishment period was shorter than those for alone supplied nitrogen treatment or alone control weed treatment. Establishments were fi nished before the hot summer season coming in all of the management treatments for three turfgrasses with the exception of alone supplied nitrogen, alone control weed and control of the kentucky bluegrass. Plant tillers and turf densities were obviously increased by control weed treatment for all of three turfgrasses. Kentucky bluegrass was more sensitive to competion of weeds than creeping bentgrass and tall fescue. Higher seedling underground, aboveground biomass and turf cover of kentucky bluegrass were getted from alone control weed treatment.