【摘要】 本文应用楝科植物(印楝、川楝、苦楝)种籽油及其抽提物对柑桔木虱及其他害虫进行一系列的忌避拒食及触杀作用试验,证明印楝油有明显的忌避及拒食作用。印楝油对柑桔潜叶蛾有良好的防效。印楝、川楝及苦楝油对柑桔红蜘蛛也有较强的触杀作用。应用楝科植物杀虫剂可兼治几种害虫,对人畜安全,不污染环境,不会引起抗药性的产生,而且对害虫天敌也比较安全。更多还原

【Abstract】 With an aim to search for insecticides of good environmental quali-ty,experiments have been carried out on the application of the oil andextracts of the seeds of three species of Meliaceae for the oontrol ofcitrus insects in South China.Results of laboratory and field tests showedthat a spray of 1.4％ emulsified neem (Azadirachta indica) seed oilshowed potential as a strong antifeedant for the control of the Asiaticcitrus psyllid (Diaphorina citri) which transmits the yellow-shoot di-sease.There is also some evidence to show that the oil exhibited contactaction and insect growth disruption effects on the nymphs of the psyl-lid.The neem seed oil and the petroleum ether extracts of the seed ker-nals of two species of chinaberry (Melia azedarach and M.toosendan)were effective against the citrus red-mite (Panonychus citri).A sprayof 1.4％ neem seed oil also gave good control of the larvae of the cit-rus leaf miner (Phyllocnistis citrella). The unique properties of the seeds of some species of Meliaceae asa repellent and antifeedant,safe to the environment and to the naturalenemies of insect pest and compatability with the agroecosystem em-phasize its potential in the integrated control of citrus insect pests.更多还原