摘要
采用盆栽模拟大田试验方法，对北京地区三种冷季型单播草坪草进行蒸散量研究。结果表明，三种草坪草充分灌水条件下蒸散量高于限制灌水条件，其中高羊茅的蒸散量大于草地早熟禾和多年生黑麦草的蒸散量；三种冷季型草坪蒸散量随土壤含水量的增加而增加，呈正相关关系，其关系式为：高羊茅y=1.2769x＋3.1113（R^2=0.9108）；多年生黑麦草y=1.177x＋2.893（R^2=0.9572）；草地早熟禾y=1.0144x＋2.3908（R^2=0.8168）。一天内蒸散量呈现单峰变化趋势，并且60％的蒸散量集中在10：00～16：00之间。
By pot cultivation test, the evapotranspiration of three cold-season turf-grass in Beijing was studied. The results showed that the evapotranspiration of three cold-season turf-grass was higher under sufficient irrigation than limit irrigation, and the order of evapotranspiration was Festuca arundinacea cv. Pixie 〉Poa pratensis cv. Midnight〉Lolium perenne cv. Pickwi; Under different soil water content, the evapotranspiration of cold-season dripped with the decrease of soil moisture; The evapotranspiration in one day showed a trend of single curve, and the transpiration mainly concentrated from 10 ： 00 to 16 ： 00.
出处
《中国草地学报》
CSCD
2008年第1期93-96,共4页
Chinese Journal of Grassland
关键词
蒸散量
限制灌水
充分灌水
冷季型
Evapotranspiration
Sufficient irrigation
Limit irrigation
Cold-season
