人工培育条件下羊草与冷蒿的种间关系研究

通过人为控制种群密度的盆栽实验,研究羊草的高度生长和播种比例的关系以及羊草、冷蒿的地上生物量与播种比例的关系。结果表明:羊草的高度生长不受单播、混播的影响,其增长曲线为H=a bt ct2;不同的播种比例,羊草的生长速率不同。当两者株丛数接近相等时,冷蒿对羊草的高度生长有明显的抑制作用;株丛数相差较大时,冷蒿促进羊草的生长。对总生物量而言,羊草的混播比例增大不利于总体生物量的积累。

Study on Interspecific Relationship between Leymus chinensis and Artemisia frigida

In artificial experiment,the population density was controlled to determine the interspecific relationship between Leymus chinensis and Artemisia frigida.The results was as follows: the height increase of Leymus chinensis was not effectel by single souing or mix-sowing,the regression curves equation of height increase of Leymus chinensis is H=a bt ct2(H is height,t is time of measuring).Rate of increased height of Leymus chinensis was affected by mix-sowing in different proportion.As to the total biomass,the increased proportion of Leymus chinensis is not favour for the total biomass accumulation,but on the other hand,mix-sowing is favour for the height increase of Leymus chinensis,but not good for Artemisia frigida.