稻瘿蚊是我县水稻主要害虫之一,1978年以前,一般标葱率达12—25.5%,高的达80%以上,损失甚为严重。1977年以来,我们采取了“铲除游草灭虫源;切断中稻桥梁田;秧田重施‘送嫁药’;挑治晚造对象田”等综合防治措施,收到了良好效果,1977年和1978年晚造标葱率只有1.6—4.5%,比1976年减轻了5—10倍。我们的具体做法是:一、铲除游草灭虫源。我们从几年的冬后调查情况发现,人们割草和放牧较少、土壤湿润或有少量沙复盖的河滩、水沟边、田坎边的老游草内,稻瘿蚊最多。这些地方的游草,到了3月下旬—4月上旬初,便可见到乙型葱管陆续出现,4月上旬末至中旬初, Rice gall midge is one of the major rice pests in our county. Before 1978, the average yield of green onions was 12-25.5% and the height was over 80%. The loss was very serious. Since 1977, we have taken a series of comprehensive preventive and control measures such as “eradicating the source of pest control grass; cutting off the bridges in Zhongda Rice; re-applying the seedling for the delivery of medicines” and “picking up the late-made target fields” and have achieved good results. In 1977 and 1978 Made in the evening standard scallion rate of only 1.6-4.5%, 5-10 times lighter than in 1976. Our specific approach is: First, eradicate the source of grass pest control. We from a few years of winter survey found that people cut less grass and grazing, soil moisture or a small amount of sand covered river beaches, gutter edge, edge of the edge of the grass, the most rice gall midge. Grasslands in these places, to the end of March - Early April early, you can see the B onion appear one after another, early April to early mid-early,