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柑桔粉介壳虫Pseudococcus Citri Risso系福建省闽侯专区普遍严重为害柑桔类的一种介壳虫,历年来在外销柑桔检疫工作中经常见到,也是柑桔包装选果上存在的主要问题。由於此虫在采收时已孵化出大量若虫匿藏於萼片下越冬,虫体微小,检查困难,选果易於忽略,极易随鲜果传播蔓延。例如1955年12月,由各产地运厂加工之柑桔经调查福桔比雪柑严重,闽侯县吴山乡出产福桔因粉介壳虫严重超过规定不合出口者达68.4％,长乐县浪峰乡达18％,其他地区均达10％左右,虫口密度每果竟有达到
Pseudococcus Citri Risso is a kind of scale insects that are generally serious and harmful to citrus in Minhou area, Fujian Province. It has been often seen in export citrus quarantine over the years and is also the main problem in the selection of citrus fruits . Because of this worm in the harvest has hatched a large number of nymphs hidden in the sepals overwintering, parasites tiny, difficult to check, the election is easy to ignore, easily spread with the spread of fresh fruit. For example, in December 1955, citrus processed by the producing and transporting factories was seriously investigated than citrus fruit. Citrus sinensis produced by Wushan Township in Minhou County was 68.4% more severely than those prescribed for exporters. Township up 18%, other areas reached about 10%, pest population density actually reached