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1990~1993年,应用20%三唑磷乳油进行防治马尾松毛虫和鞭角华扁叶蜂幼虫试验,结果如下:①采用300~1600倍液防治第1代≤3龄马尾松毛虫幼虫,72h后,其杀虫率为90.4%~100%,防治≥4龄幼虫的,其杀虫率为89.1%~95.8%;防治第2代≤3龄幼虫,72h后,其死亡率为71.9%~90.7%.②采用500~2000倍液防治鞭角形扁叶蜂幼虫,并与同倍数的40%水胺硫磷、50%甲胺磷进行对比,使用三唑磷的,72h后,其死亡率力40.3%~99.2%,96h后残毒药效为14.2%~100%,优于甲胺磷,次于水胺硫磷.在本试验设计浓度范围内,它们的杀虫效果(包括残毒药效)都是随浓度加大而随之提高.
From 1990 to 1993, 20% triazophos EC was used to control the larvae of Dendrolimus punctatus and Hornwort. The results were as follows: ① The larvae of 1st and 3rd instar Dendrolimus punctatus were treated with 300 ~ 1600 times, , The insecticidal rate was 90.4% ~ 100%, and the insecticidal rate was 89.1% ~ 95.8% for the control of ≥4 instar larvae. After controlling for the 2nd generation ≤3 instar larvae, after 72h, The mortality rate was 71.9% ~ 90.7%. ② 500 to 2000 times the liquid to prevent whip-shaped bee flat bee larvae, and with the same number of 40% methamidophos, 50% methamidophos comparison, the use of triazophos, 72h, the mortality rate of 40. 3% ~ 99.2%, after 96h residual drug potency of 14.2% to 100%, better than methamidophos, inferior to isocarbophos. Their insecticidal efficacy (including residual toxicity) increased with increasing concentrations within the design concentration range of the test.