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1989年在河北省赵县发现一种新的玉米害虫。经中国科学院动物所王子清先生初步鉴定,确认为粉蚧(种名待定)。 赵县夏播玉米37万亩,发生此“粉蚧”者6万亩,严重的1万多亩,绝收的有100多亩。 据调查,发生“粉蚧”严重的地块植株明显矮化,一般株高40-50厘米,下部3-4个叶片干枯,受害植株初生根变褐腐烂。玉米“粉蚧”集中在初生根周围危害,外被蜡粉及白色丝状物,虫体约4毫米左右,肉红色,龄期不整齐。集中6-7月危害,将对玉米生产构成严重威胁。生产上急需对其进行研究,提出控制措施。
In 1989 found a new corn pests in Zhao County, Hebei Province. By the Chinese Academy of Sciences Institute of Animal Sciences, Mr. Wang Ziqing preliminary identification, confirmed as mealybug (species name to be determined). Zhaoxian summer sowing 37 acres of corn, the occurrence of this “mealybugs” who 60,000 acres, a serious 10 000 acres, 100 acres of must-harvest. According to the survey, the occurrence of “mealybugs” serious plots of plants significantly dwarfing, the general plant height of 40-50 cm, the lower 3-4 leaves dry, damaged plant primary root brown rot. Corn “mealybugs” concentrated in the primary root around the hazard, the outer wax and white filaments, parasites about 4 mm, red meat, irregular age. Focus on June-July hazards, will pose a serious threat to the production of corn. Urgent need to study its production, put forward control measures.