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小麦吸浆虫是小麦生产上一种毁灭性的害虫,被国家列为限期消灭的害虫之一。该虫曾在五十年代大发生,一度造成小麦减产,经采取综合防治措施,五六十年代中期被控制。但是近几年来,由于种种原因,造成小麦吸浆虫再度回升。我县1982年发生后蔓延扩大,至1985年全县发生面积达20万亩。根据去年秋季和今年春季检查,越冬虫源量大,今年有可能暴发成灾。一、土壤载虫量情况去年秋季于小麦播种前进行弟一次淘土检查:山区平均每亩载虫量为57.3万头,最
Wheat midges are one of the devastating pests in wheat production and are listed as one of the pests eliminated by the state on a deadline. The insects occurred in the fifties, once caused a wheat yield reduction, after taking comprehensive prevention and control measures, was controlled in the mid-fifties and sixties. However, in recent years, due to various reasons, causing wheat midge resurgence. After the county expansion in 1982, the county expanded to 1985, the county occurred an area of 200000 acres. According to the inspection conducted last autumn and this spring, the amount of overwintering insect pests is large and this year there may be an outbreak of disaster. First, the amount of soil-borne insects Last autumn, sowing in front of the wheat brother conducted a check: the average number of mountainous area per kilogram of 573,000 bee, the most