放牧型牛鞭草混播草地的建植与利用研究

通过对新建植的放牧型扁穗牛鞭草混播草地在超载条件下连续4年的植被调查分析，探讨了该草地的放牧演替规律，结果表明，采用扁穗牛鞭草＋狗牙根．＋百喜草＋苇状羊茅＋多年生黑麦草＋白三叶混播组合，可建立扁穗牛鞭草＋狗牙根-百喜草-白三叶型草地，该草地超载利用多年，植物群落稳定，生产力高，耐牧性好，可作为我国温暖湿润气候区放牧型人工草地的适宜类型．

Research on the construction and utilization of the grazing-type Compressed Hemarthia mixing grassland

Based on an investigation and analysis, which lasted for four continious years on the vegetation of the newly-built, grazing-type Compressed Hemarthia mixing grassland under the condition of over-grazing, this essay probes the grazing succussion regularity of the target grassland. It shows that the grassland in the type of Hemarthria compressa (L.f) R.Br.+Cynodon dactyon L-Paspalum notatum flugge.-Trifolium repens L. can be built by the following type of combination: Hemarthria compressa (L.f) R.Br. + Cynodon dactyon L + Paspalum notatum flugge, + Festuca arundinacea schreb. + Lolium perenne L. + Trifolium repens L. This type of grassland can be utilized under the over-grazing condition for many years. Its plant community remains stable. A high productivity is kept and the grazing capability is sustained. Therefore it is a suitable type for the sown grazing-type grassland in the warm and humid climate regions in our country.