多年生黑麦草和绒毛草在放牧条件下的生物学特性

比较了多年生黑麦草(Lolium perenne)和绒毛草(Holcus lanatus)在放牧绵羊条件下的产草量、草层高度和分蘖密度。结果:两类草地的牧前产草量相似,但绒毛草草地的牧后产量明显高于黑麦草草地。草层高度在放牧前后均无显著差异。绒毛草的枯死物质在放牧前后都高于多年生黑麦草。绒毛草具有很高的分蘖密度。

The Biological Characteristics of Holcus lanatus and Lolium perenne under Grazing Conditions

This study was to compare the behaviour and the potential reaction of the two grass species under grazing conditions. Detailed sward measurements of herbage mass, sward height and sward component were made before and after grazing. There was no significant difference in herbage mass between ryegrass/white clover and yorkshire fog/white clover pastures before grazing, but after grazing the pasture mass was significantly higher for yorkshire fog. Sward surface heights were very similar for the two swards both before and after grazing. The sown grasses formed the dominant proportions in both swards, while white clover proportions were similar. The proportion of dead material was higher for yorkshire fog/white clover pasture than ryegrass/white clover pasture both before and after grazing. Tiller populations were higher for yorkshire fog than ryegrass.