Kunlun Poa
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Open Category: forestry biology
Kunlun Poa, scientific name Poa litwinowiana Ovcz, for the perennial dense herbs. Common in the 2800 ~ 3000 meters above sea level on the mountain meadow and the subalpine in the Kunlun Mountains and the Pamirs can rise to 3200 ~ 4000 meters of subalpine and alpine zone. Suitable for high plains, gentle slopes of mountainous terrain, mountain basins and valleys. Distributed in China's Xinjiang, Qinghai, Tibet and other Mongolia, Central Asia, Siberia also have distribution.
Poole litwinowiana Ovcz. English name Litwinow bluegrass Geographical distribution Kunlun Poa pratensis (also known as Poa pratensis) distributed in China's Xinjiang, Qinghai, Tibet and other Mongolia, Central Asia, Siberia, the Middle Ages, There are also distributions. Morphological characteristics perennial dense herbs. Stems erect, smooth glabrous, 10 to 25 cm tall, plants blue-green or gray-green, without rhizome. Leaf sheath short, only the stems of 1/2, cauline leaf sheaths in 2/3 the following leaf strip, gray-green, flat or slightly folded, 1.5-3 mm wide, slightly rough. Panicle compact, usually spike-shaped, with a very short branches, branches rough, each section 2 to spike purple-green or purple-brown, with 3 to 5 Yinglou needle-shaped, Apex and margin membranous, base cord absent, lemma only pilose along the lower veins, long (2.5) 3 to 4 (4.5), base broadly cuneate, margin serrulate, ; Anthers ca. 1.5 mm. Biological and ecological characteristics of cold and dry dense plexus grasses, hi cool, dry ecological climatic conditions. Has a strong cold, drought characteristics, is a mountain grassland and mountain meadow pasture plants. Common in the 2800 ~ 3000 meters above sea level on the mountain meadow and the subalpine in the Kunlun Mountains and the Pamirs can rise to 3200 ~ 4000 meters of subalpine and alpine zone. Suitable for high plains, gentle slopes of mountainous terrain, mountain basins and valleys. The soil types are mainly subalpine and alpine chestnut soil or light chestnut soil, which are also found in the lightly desertified land of the East Kunlun Mountains and the weak salinized meadow in the center of the basin. In mountain grassland and mountain meadow pastures, often associated with species or construction species composition appears in the alpine grasslands, is a common companion species or occasional in the eastern section of the Kunlun Mountains meadow grassland, often with the Leymus secalinus and Phragmites australis. The dominant species were Artemisia parvula and Festuca sphagnicola in mountainous steppe, which were the dominant species. The ecological environment of Kentucky bluegrass is very bad, its climatic change is big, but its resistance is strong, and its regeneration is also strong in steppe zone. In severe drought years, still short plants complete life history. General year, late April to early May turn green, late June heading, strong in mid-July, late August mature, late September, yellow. Feeding value Although the Kentucky bluegrass in the pasture in the participation is not large, but the more widely distributed, there is a strong resistance and viability. And it has a large proportion in the yield of grassland in the Kunlun Mountains, and has important feed value. Good palatability, stems and leaves delicate, good quality of the grass, heading and flowering stems and leaves remain green after the fertility of all types of livestock are eating, especially sheep favorite food. Inflorescence and ears of all kinds of livestock prefer to eat, can play catch fat role. From the turning green to June can form more production, and thus as the most suitable for the use of summer grazing, winter to spring, due to small strains, the remaining small amount of palatability and nutrients are decreased, the value of this period is not used Big. Superior forage.Fig
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