青海玉树市高原鼠兔危害情况调查
wf(2022)
Abstract
为准确掌握青海玉树市天然草场高原鼠兔的危害程度及其繁殖性能,科学制定灭鼠计划,提高草原生产力,笔者开展了本次调查.结果显示:高原鼠兔在玉树高海拔地区一年只能繁殖一次,每胎产仔1~9只,平均2.1只;雄鼠体重158 g,体长147 mm,雄鼠体重是雌鼠体重的89.77%;雌鼠体重176g,体长150mm,雌鼠在种群中平均占比52.5%;高原鼠兔的平均日食量为77.3g,52只成年鼠兔日消耗牧草量相当于1头藏系绵羊的日食量;其空胎率低,成活率高,破坏力强.
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