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小麦吸浆虫五十年代一度猖獗,经大力防治和推广抗虫品种,而控制了为害。八十年代以来,由于多种原因回升较快,1985年,又造成了历史性灾情重现。我县有小麦110万亩,严重受害者80万亩,一般减产30—50％,个别地块基本失收。陈桥区宋井乡、汤店乡和下桥区王桥乡等,均有不少农户小麦提前割掉喂牛、或毁田另种。新集区龙岗村某户种百农麦9亩,平均单产13.3斤。 造成吸浆虫严重回升的主要原因: 1.淘汰了抗虫品种,又放松了防治: 自七十年代以后,调种频繁,只求高产优质,忽视了抗虫性,逐步淘汰了抗虫品种南大2419,新的抗虫品种未能跟上,而防治
Wheat midge flies were rampant in the fifties, after the vigorous prevention and promotion of insect-resistant varieties, and control of the damage. Since the 1980s, due to a variety of reasons picked up rapidly, in 1985, it also caused a historic disaster to recur. Our county has 110 million mu of wheat and 80 million mu of serious victims, with a general cut of 30-50%. Basically, some individual plots have been lost. Chenqiao Qu Songjing Township, Tangdian Township and Xiaqiao District Wangqiao Township, etc., have many farmers wheat cut off in advance to feed cattle, or destroy the other species. New Settlement Longgang Village, a species of hundred kinds of agricultural land 9 acres, the average yield of 13.3 pounds. The main reason causing Midge resuscitation: 1. The elimination of insect-resistant varieties, but also to relax the control: since the seventies, the frequency of adjustment, only high yield and quality, neglect of insect resistance, and phase out the insect-resistant varieties of Nanda 2419 , The new insect-resistant varieties failed to keep up, and control