在短花针茅草原种植蒙古冰草的效果

EFFECT OF GROWING AGROPYRON MONGOLICUM IN STIPA BREVIFLORA DESERT STEPPE

通过多年观察研究,在内蒙古乌盟达茂旗短花针茅草原人工种植蒙古冰草,只要土壤适宜,从5月20日～8月20日之间播种都能成功;以后各年返青早,枯黄晚,可延长草地青绿放牧时间两个月左右;抗性强,适应性广泛,既可单播,又能与豆科牧草混播;地上部生物量干重可达94～150公斤/亩,是天然草地牧草产量的4～7倍;品质好,寿命长,对解决荒漠草原饲料不足问题具有重要意义。

Through observation and research in Stipa breviflora desert steppe, the result shows that Agropyron mongolicum has many advantages as a growing pasture forage. So long as soil is suitable, it can be planted anytime from the 20th of May to the 20th of August. In the other years after planting, it turns green earlier in spring and withers later in fall than the grasses living in natural rangland; Generally,it can prolong grazing time for two months as green forage approximately; It has a wide plasticity to the harmful weather, and both monoculture and mixed cultivation with legumes are all available to it; The biomass of overground part can reach 94～150kg of dry matter per mu, and this is 4～7 times as weight as producing in the natural grassland. Its quality is high and life-span is quite long. So it is important to grow Agropyron mongolicum in desert steppe for solving the problems of forage shortage.