关键词: 高原鼢鼠, 高原鼠兔, 杀鼠剂

Abstract: This paper deals with toxicity determination, palatability and field trials of several rodenticides to plateau zokor (Myospalax baileyi)and plateau pika(Oehotona curzoniae).The results showed that the LD₅₀ of bromadiolone, talon, diphacinone-Ha, strychnine and crimidin were 1.31mg/kg, 0.439mg/Kg, 0.94mg/kg, 15.65mg/kg and 7.84mg/kg for plateau zokor respectively, and the LD₅₀ of bromadiolone, talon, chlorophacinone, diphacinone-Na, gopha acide and crimidin were 0.43mg/kg, 0.138mg/kg, 1.229mg/kg, 8.68mg/kg, 7.81mg/kg and 1.733mg/kg for plateau pika respectively.In preference tests, 0.02% bromadiolone bait had the best palatability to plateau zokor, and 0.05% chlorophacinone and 0.01% bromadiolone baits did to plateau, pika.The field tests indicated that the best efficiency of elimination to plateau zokor were 74.40% with 0.075% diphacinone-Na grain baits and 70.53% with talon grain baits, and to plateau pika was 100.0% with 0.01% bromadiorone grain baits.