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试验设11~15℃、16~20℃、21~26℃3个温度区间,试验用苹果蠹蛾幼虫人工接种到樱桃上,分别用4种不同溴甲烷剂量进行处理,每个处理设5个重复,1个对照,试验在温控室的熏蒸桶中进行。结果表明,在11~15℃,溴甲烷剂量48 g/m3,熏蒸2h;16~20℃,溴甲烷剂量40 g/m3,熏蒸2h;21~26℃,溴甲烷剂量32g/m3,熏蒸2h,均能够100%杀死樱桃中苹果蠹蛾幼虫。考虑温度对樱桃品质的影响,建议将11~15℃、溴甲烷剂量48g/m3,熏蒸2h,作为溴甲烷熏蒸樱桃中苹果蠹蛾的技术参数。
The experiment was conducted at three temperature intervals of 11-15 ℃, 16-20 ℃ and 21-26 ℃. Caterpillar moth larvae were inoculated into cherry by artificial inoculation with four different doses of methyl bromide. Five replicates were set up for each treatment , A control, the experiment in the temperature control room fumigation barrel. The results showed that the dosage of methyl bromide was 48 g / m3 and fumigation was carried out at 11 ~ 15 ℃ for 2h, the dosage of methyl bromide was 40 g / m3 at 16 ~ 20 ℃ for 2h, the dosage of methyl bromide was 32g / m3 at 21 ~ 26 ℃ 100% kill Cydia pomonella larva in cherry. Considering the influence of temperature on the quality of cherry, it is suggested that the dosage of methyl bromide should be 48g / m3 at 11 ~ 15 ℃ for 2h, which is the technical parameter of codling moth in fumigation of methyl bromide.