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冷季型草是指那些最适生长温度在11～20℃的草坪草种,在我国主要分布在华北、东北、西北等地区。在冷季型草坪草中,目前较为常用的是禾本科的草地早熟禾(Poa pratensis L)。它是一种多年生草种,杆丛生、直立而光滑,圆形,相对柔软,如任其自然生长,一般高可达50～80厘米,圆锥花序很开展,每小穗有3～5朵花。由于具有强大生命力的根茎,在每个茎节上都能再长出新的茎和根,这就扩大了根系分布范围,能够很容易地形成繁茂的草皮。草地早熟禾广泛适用于寒冷潮湿带和过渡带,在我国的东北、山东、河北、内蒙古等地都有较长的种植历史。如果在较好的灌溉条件下,它也可以在寒冷的干旱或半干旱地区生长。不过,因为不能承受高温与干旱的双重压力,在夏季会出现生长放缓的现象,并伴随休眠,这
Cold season grass refers to those most suitable growth temperature of 11 ~ 20 ℃ lawn grass species, mainly distributed in China in North China, Northeast, Northwest and other regions. Among the cold-season turfgrass, Poa pratensis L is currently the most commonly used grass. It is a perennial grass, rod tufted, upright and smooth, round, relatively soft, as its natural growth, generally up to 50 to 80 cm, panicle is carried out, each spikelet has 3 to 5 flowers . Because of the strong vitality of rhizomes, new stems and roots can be grown on every stem, which expands the distribution of the root system and makes it easy to form lush turf. Poa pratensis is widely used in cold humid zone and transition zone, and has a long planting history in Northeast China, Shandong, Hebei, Inner Mongolia and other places. It can also grow in cold, arid or semi-arid areas under better irrigation conditions. However, because of the unbearable pressure of high temperature and drought, there will be a slow growth in the summer with sleep