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一、发生动态。近年来,由于六六六农药停产,药剂处理土壤面积减少及小麦品种不抗病等原因,致使小麦吸浆虫严重回升。在50年代初,我省磁县有过发生,由于采用六六六粉处理土壤和防治成虫,很快地控制了危害,直到1982年前均无发生。1983年磁县申庄有5.6亩小麦被害,造成绝产。1984年扩展到1100亩,1985年发展到1.5万亩,1986年很快扩展到15万亩,1987年达到35万亩。其中达到防治指标的就有20万亩。中部产麦区的赵县1987年播种小麦58万多亩就有29万多亩发生该虫。该县高村乡北泥河村陈林子等农户42亩地因没有防治吸浆虫本来600—700斤长相的麦田,亩产仅180斤。据
First, the dynamic. In recent years, due to the halt of 666 pesticides, pesticides to reduce the soil area and wheat varieties are not resistant to disease and other reasons, resulting in a serious reboot of wheat midge. In the early 1950s, Cixian County in our province had occurred. Due to the use of 666 powder to treat soil and control adults, it quickly controlled the harm and did not occur until 1982. In 1983 Cixian Shenzhuang 5.6 acres of wheat were killed, resulting in abortion. It expanded to 1,100 mu in 1984, to 15,000 mu in 1985, to 150,000 mu in 1986 and to 350,000 mu in 1987. Among them, 20 million mu have been reached to control indicators. Zhaoxian in the middle of the wheat growing area in 1987, 580,000 acres of wheat sown more than 290,000 mu of the pest. The village of Chennai and other farmers in the northern village of Kaohsiung High Village 42 acres of land because there is no prevention and treatment of midge, 600-700 pounds of wheat in the original appearance, only 180 pounds per mu. according to