夏玉米粗缩病又叫玉米病毒病,是夏玉米产区近年流行的一种毁灭性病害。据邯郸市调查,1992—1993年累计发病面积38万亩,其中1.5万亩绝收毁种,7.5万亩减产70%,23万亩减产50%,造成了很大的经济损失。据有关资料记载,夏玉米粗缩病主要是带毒灰飞虱和黑尾叶蝉危害造成的。灰飞虱在邯郸市区,一年发生4—5代,世代重叠明显。一般1—3世代以羽化后的成虫进行危害,大体时期是:一代5月下旬至6月中旬,二代6月下旬至7月下旬,三代7月下旬至8月上旬。黑尾叶蝉一年发生4—6代。有明显世代重叠 Summer maize disease, also known as corn virus disease, is a devastating disease in the summer maize area popular in recent years. According to a survey conducted in Handan City, the accumulated disease area in 1992-1993 was 38 million mu, of which 15,000 mu were indiscriminately deforested. The output of 75,000 mu was reduced by 70% and the output of 230,000 mu was reduced by 50%. As a result, great economic losses were caused. According to relevant information, summer maize disease is mainly caused by the hazards of Laodelphax striatellus and Nephotettix cincticeps. Laodelphax striatellae in Handan urban areas, occur 4-5 generations a year, generation overlap obvious. Generally 1-3 generations to eclosion adult harm, the general period is: a generation of late May to mid-June, the second generation of late June to late July, three generations from late July to early August. Black-tailed leafhopper occurs 4-6 generations a year. There is a clear overlap in generations