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为了研究不同演替系列羊草密度和生长特性,试验采用单位面积取样法对西甸子草原和扎龙湿地干湿交替带羊草群落、羊草+朝鲜碱茅群落、羊草+芦苇群落、羊草+杂类草群落和杂类草群落羊草的密度、高度以及生殖株的数量、高度等构件特性进行比较研究。结果表明:羊草种群的密度随生育期的进程逐渐增加,4月份为羊草的返青期,密度小,生长速度也慢;5—6月份为羊草地下芽库的主要输出时期和营养生长期;7月份达到最大值。扎龙湿地干湿交替带羊草的密度高于盐碱化的草甸草原,并且生长速度快、高度高,生殖株所占的比例大。
In order to study the density and growth characteristics of Leymus chinensis in different succession series, the sampling method of unit area was used to study the relationship between the density of Leymus chinensis and Leymus chinensis community in Xidianzi and Zhalong wetlands, The density and height of Leymus chinensis grass, grass community + miscellaneous grass community and herbage grass community were compared. The results showed that the density of Leymus chinensis population increased gradually with the growth period, April was the turning green stage of Leymus chinensis, the density was low and the growth rate was slow. The main output period and vegetative growth of Leymus chinensis germina Period; reaching the maximum in July. The density of Leymus chinensis alternate wet and dry in Zhalong wetland is higher than that of salinized meadow grassland, and the growth rate is high and the proportion of reproductive strains is large.