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用壕沟法和Minirhizotron法对差巴嘎蒿(Artemisiahalodendron)和小叶锦鸡儿(Caraganamicrophylla)根系形态、分布和生长动态的研究表明,差巴嘎蒿根系大量分布于5~30厘米的土层中,小叶锦鸡儿根系多分布于20~80厘米的土层中.有根瘤,一般土壤发育越好根瘤越多。围栏封育四年以后差巴嘎蒿的生长开始减弱.表现为吸收性根(直径小于1毫米)的分生数量显著少于放牧区。生物季两种植物根系数量的增减受降雨频度和降雨量的影响,与地上部分的物候期关系不明显。新根开始生长的日期晚于地上部分萌动的日期,约50%的吸收性根在冬季死亡。
The study on the morphology, distribution and growth dynamics of Artemisia halodendron and Caraganamicrophylla roots by trenching and Minirhizotron methods showed that roots of Artemisia halodendron were widely distributed in the soil layer of 5 ~ 30 cm, Caragana root more distributed in 20 to 80 cm of soil. There are nodules, the better the general development of soil nodules more. Four years after fencing began, the growth of Artemisia halodendron began to diminish. The number of adventitious roots that showed absorptive roots (diameter less than 1 mm) was significantly less than that of grazing areas. The increase and decrease of the root number of two plants in the biological season were affected by the rainfall frequency and rainfall, and the relationship with the phenophase of the aerial part was not obvious. New roots begin to grow later than the germination date of the aerial parts, and about 50% of the absorptive roots die in winter.