【摘要】 １９９６年的调查，果洛州草地鼠虫害面积约为２４７．６万ｈｍ２，因鼠害每年损失牧草约１５９８．７万ｔ，相当少养１０９５．０１万羊单位。近１０年来使用Ｃ型肉毒梭菌毒素灭治取得很大成绩，累计灭治面积达到１８３．１万ｈｍ２。更多还原

【Abstract】 The area harmed by rat and insect pest was 2476 thousand hm 2 in the grassland of Guoluo prefecture according to survey in 1996.The loss herbage per annual was about 15987 thousand tons because of rat pest corresponding the herbage demand 1095.01 thousand sheep units.In recent ten years,the best effect was achived in the elimination of rat pest with botulismo-toxin.Total area of prevention and elimination was 183.1 thousand hm 2.更多还原