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为正确评估防治水稻鳞翅目害虫的新型杀虫剂氯虫苯甲酰胺对非靶标害虫白背飞虱Sogatella furcifera(Horváth)的影响,本文采取稻茎浸渍法测定了氯虫苯甲酰胺对白背飞虱的毒力,利用生命表技术研究了氯虫苯甲酰胺对白背飞虱的亚致死效应。结果表明:氯虫苯甲酰胺对白背飞虱3龄若虫和成虫的LC50分别为19.26mg/L和19.69mg/L。以氯虫苯甲酰胺LC10和LC25剂量分别处理白背飞虱3龄若虫后,F0和F1代雌虫产卵量及其寿命均降低,尤其LC25处理与对照间存在显著差异(P<0.05),F0和F1代雌虫寿命分别缩短了1.80d和2.62d,F0和F1代雌虫产卵量分别减少了52.94粒和78.45粒。药剂处理对F1代各虫态发育历期也有一定影响。根据不同剂量处理后白背飞虱各发育阶段的存活率和成虫的繁殖力,组建了生殖力生命表,发现LC10和LC25剂量处理的种群内禀增长率rm分别降低了11.25%和34.41%,净增殖率R0分别降低了36.56%和74.57%,而世代平均历期T和种群加倍时间t均延长。结果说明,氯虫苯甲酰胺LC10和LC25剂量可抑制白背飞虱种群的增长;大田中使用氯虫苯甲酰胺防治鳞翅目害虫时,可抑制同时发生的非靶标害虫白背飞虱田间种群增长。
In order to evaluate the effect of chlorantranilol, a new insecticide against rice lepidopteran pests, against Sogatella furcifera (Horváth), a non-target pest, Sipatella furcifera (Horváth) The toxicity of planthoppers was studied using the life table technique to study the sub-lethal effects of benzbensil on whitebacked planthopper. The results showed that the LC50 of chlorantraniliprole for the 3rd instar nymphs and adults of the WBPH were 19.26 mg / L and 19.69 mg / L, respectively. After the 3rd instar nymphs were inoculated with LCB and LC25 at the doses of chlorantraniliprole, the fecundity and the longevity of the females in F0 and F1 decreased, especially between LC25 and control (P <0.05) , The females of F0 and F1 were shortened by 1.80d and 2.62d, respectively, and fecundity of females of F0 and F1 were reduced by 52.94 and 78.45, respectively. Pharmacy treatment on the F1 generation of each insect state development period also have a certain impact. According to the survival rate and adult fecundity of whitebacked planthopper, the fertility life table was established according to different doses of treatment. The intrinsic rate of increase (rm) of LC10 and LC25 treated groups was reduced by 11.25% and 34.41%, respectively. The net reproductive rate R0 decreased by 36.56% and 74.57% respectively, while the average generation duration T and population doubling time t were prolonged. The results showed that the chlorantranilipido LC10 and LC25 dose can inhibit the growth of the population of whitebacked planthopper; use of chlorantraniliprole in the field control Lepidoptera pests, can inhibit the simultaneous occurrence of non-target pest whitebacked planthopper field Population growth.