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辣根素是一种潜在的替代溴甲烷的植物源熏蒸物质。为了进一步完善其杀虫谱,利用三角瓶密闭熏蒸法,研究了辣根素原油和无水乙醇以1∶9按体积比混配后分别在不同温度下对长角扁谷盗和锯谷盗成虫的熏蒸毒力。结果表明:在10、20、28℃下,辣根素对长角扁谷盗的LC50依次为1.40、1.13、0.87μL/L;对锯谷盗的LC50依次为10.06、6.88、5.81μL/L。在相同熏蒸温度下,长角扁谷盗成虫对辣根素的敏感性均较锯谷盗成虫高。辣根素对两种仓虫的熏蒸效果均随温度的升高而升高。
Horseradish is a potential source of plant-based fumigation for methyl bromide. In order to further improve its insecticidal spectrum, the use of airtight flask fumigation, the study of the horseradish crude oil and ethanol at a 1: 9 by volume ratio after mixing at different temperatures on the flat-angle Bazhu and Sawatari Adult fumigation toxicity. The results showed that the LC50 values of horseradish on long-angle flat-legged steers were 1.40, 1.13 and 0.87 μL / L at 10, 20 and 28 ℃, respectively. The LC50 of horseradish’s was 10.06, 6.88 and 5.81 μL / L . Under the same fumigation temperature, adults of P. anglica were more susceptible to horseradish peroxidase than adults with sawfly. The effect of horseradish on the fumigation of two species of caterpillars increased with the increase of temperature.