摘要
用性信息素阻断交配技术防治梨小食心虫Grapholitha molesta(Busck)的试验于1987—1988年在河北省元氏县太行山白果树试区山坡杏树林进行。两年的试验面积各为10亩和20亩。田间试验中每亩投放含性信息素200μg的诱芯80个。对照区5月上旬喷一次农药,倍数为1500倍,试验区不喷药。 为了监察阻断效果,在试验区和对照区各挂糖醋碗10个,诱捕梨小雌成虫,镜检雌蛾交配囊内有无精苞以确定交尾次数。 试验结果:(1)阻断率两年分别为95.5％和95.2％;(2)雌蛾交配率的考察:实际阻断52.5％的雌娥交尾率;(3)人工合成的性信息素引诱能力高于活雌蛾的引诱力;(4)试验区卵的孵化率为24.5％,对照区为44.7％;(5)试验区虫果率为7.1％,对照区为13.9％。 用阻断交配技术进行防治比用化学防治节省工资80—90％;节省药费20％左右。
The sex pheromone confusion experiment in the control of oriental fruit moth (Grapholilha moles la Busck) had been conducted in the apricot orchard of Taihengshan Baiguoshu experiment station in Yuanshi county of Hebei province from 1987 to 1988. The experiment sites were 10mu and 20mu in 1987 and 1988 respectively. Eighty bearings per mu with 200Mμg synthetic sex pheromone were used in the field tests. In the check site, pesticide was applied once every year in May for control of oriental fruit moth, no pesticide was applied in the confusion experiments area. The results showed that the rate of prevent mating was 95.5% in 1987 and 95.2% in 1988 and the rate of prevent mating of female moth was 52.5%. The attractive capability of the synthetic area was lower (24.5%) than that (44.7%) in the check area; the rate of fruit injury was 7.1% in the confusion area and 13.9% in the check area. The expenditures on wages and on the chemicals in the confusion control was 80-90% and 20%, respectively, les.s than that in the chemical control area.
出处
《农村生态环境》
CSCD
1991年第4期40-43,共4页
Rural Eco-Environment
