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在室内测定了斯氏线虫对进境原木上的检疫性害虫———双钩异翅长蠹的致死中量和致死中时间,旨在为大规模应用斯氏线虫检疫处理双钩异翅长蠹提供理论依据。将TDM模型引入试验结果的分析中,得出了双钩异翅长蠹幼虫和蛹的TDM模型以及LD50与LT50。72h后双钩异翅长蠹老幼虫的TDM模型为:Pij=1-exp[ -3. 051 4+2. 027 2lg(di)],LD50为1. 324 4(条线虫/头),LT50为1. 238 5d。试验结果表明:随着时间的延长,LD50都逐渐减少,这是因为随着时间的延长,增加了斯氏线虫与双钩异翅长蠹接触的机会;随着线虫剂量的增加,LT50逐渐减少,即线虫剂量增加,幼虫死亡50%所需的时间就少。
The indoor lethality and lethal time of Trichomonas nematodes on quarantine pests --- Bifidobacterium longiflorus on imported log were determined in order to provide large-scale application of C. seineriensis to quarantine treatment Theoretical basis. TDM model was introduced into the analysis of the experimental results, and the TDM model of larvae and pupae of Cochinchina, and the TDM model of LD50 and LT50.72h old larvae were as follows: Pij = 1-exp [- 3. 051 4 +2. 027 2lg (di)], LD50 is 1. 324 4 (nematodes / head), LT50 is 1. 238 5d. The results showed that the LD50 decreased gradually with the increase of time, which was due to the increase of the chances of contact of Ascaris nematodes with B. tabaci over time. As the dose of nematodes increased, the number of LT50 gradually decreased, The nematode dose increases, larvae died 50% less time required.