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甜菜夜蛾的室内人工饲养及不同感染因素对生物测定结果的影响研究表明，用人工半合成饲料在室内可以大量饲养甜菜夜蛾，其生长发育历期、化蛹率、羽化率、雌雄性比和产卵均表现正常。感染时间、幼虫日龄和感染温度对生物测定结果有一定影响，随着感染时间（３、５、７天）的延长，生物测定中致死中浓度ＬＣ５０显著降低，测定结果的重复性增强；而随着感染幼虫日龄（１、２、３天）的升高，ＬＣ５０有显著升高，且测定结果的重复性降低，依次为３２．１、６４．９、１７１．１μｇ／ｍｌ；随着感染温度（２２、２５、２８℃）的升高，ＬＣ５０有较显著降低；饲料的存放时间（４～８天）对生物测定的结果只有轻微影响。
Effects of Artificial Beet Armyworm Artificial Feeding and Different Infection Factors on Bioassay Results The results showed that the artificial and semi-synthetic feedstuff could be used to rearing beet armyworm in large numbers, its growth and development duration, pupation rate, emergence rate, male-to-male ratio And spawning are normal. Infection time, larval day and infection temperature had certain influence on the bioassay results. With the prolongation of infection time (3, 5 and 7 days), LC50 in lethality in bioassay decreased significantly and the repeatability of test results increased. With the larvae age (1,2,3 days) increased, LC50 was significantly increased, and the determination of the repeatability decreased, followed by 32.1,64.9,171.1μg / ml; with the The infection of temperature (22,25,28 ℃) increased, LC50 was significantly reduced; feed storage time (4 to 8 days) on the bioassay results only slightly affected.