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黑点蚧是柑桔主要害虫之一,1年发生3—4代。各代雌蚧完成1代所需天数依次为104.3、59.6、184.9天。主要以产卵雌成虫越冬。发现黑点蚧捕食性和寄生性天敌6种,其中以寄生未成熟雌成虫的盾蚧长缨蚜小蜂寄生率最高,似有利用前途。药剂防治以喹恶硫磷、杀扑磷、乐斯本、氧化乐果等有机磷剂对雌成虫的效果最好,拟除虫菊酯类对雌成虫的效果较差。若把上述农药分别与1％石油乳剂混用,便可降低农药使用浓度,提高防治效果。防治最佳时期6—8月。
Black spot scale is one of the major citrus pests, occurring 3-4 generations a year. The generations of female scale to complete the first generation of the required number of 104.3,59.6,184.9 days. Mainly to oviposit female overwinters. Six species of predatory and parasitic natural enemies were found, among which the parasitic rate of parasitic insects was the highest in parasitoid immature adult insects. Pharmacokinetics with the genus paraoxon, Kilophos, Les Secretary, omethoate and other organophosphorus agents on the female adults the best, pyrethroids less effective on female adults. If the pesticides were mixed with 1% oil emulsion, respectively, can reduce the concentration of pesticides used to improve the control effect. The best time to prevent and control 6-8 months.