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以前在澳大利亚昆士兰东南部Mount Cotton地区曾行播过老通草的俯仰马唐草地,采用单因子组合载畜量季节变化,放牧绵羊3年(1985～1987)。老通草是平均半衰期为4.2个月的短命植物(范围1.6～10.3),死亡速率与最初的种植密度呈正相关。试验的头两年,老通草的存活率很低,是由于生境不利于幼苗更新,以及种子难以保存所致。但通过以下的处理:①春季一初夏盛花期轻牧(5只羊/hm~2);②盛夏短期重牧以产生“秃斑地”;③晚夏—秋季中度或重牧(18或27只羊/hm~2),以减少俯仰马唐草的竞争,促进老通革能良好扩展。
In the past, we used to pitch the old Cotong Pitong grasslands in Mount Cotton, southeastern Queensland, Australia. The seasonal variation of single-factor carrying capacity was used to graze the sheep for three years (1985-1987). Laotongcao is a short-lived plant with an average half-life of 4.2 months (range, 1.6 to 10.3). The mortality rate is positively correlated with the initial planting density. In the first two years of the experiment, the survival rate of Laocophorus was very low due to the fact that the habitat was not conducive to seedling renewal and the seeds were difficult to preserve. (5 sheep / hm ~ 2); ② mid-summer short-term grazing to produce “bald spot”; ③ late summer-autumn moderate or heavy grazing (18 or 27 sheep / hm ~ 2), in order to reduce the competition of pitching Crabgrass and promote the expansion of Laotonggu.