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芜湖专区水稻螟虫以三化螟发生最多、为害最重。我所自1956年开始对其发生与为害情况进行了测报,在防治上起了一定作用,由于較系統地积累了資料,为开展中、长期测报提供了依据;同时也取得了一些經驗。为了相互交流,共同提高,作者把这些点滴經驗整理出来,供作参考。一、測报工作的依据芜湖专区的三化螟为三代多发型,一年发生不完全的四代,各代发蛾比例为零点五比四点五比八十五比十,以第三代最猖獗。在一般年份,第一代蛾在5月中、下旬盛发,幼虫5月下旬到6月上旬盛孵;第二代蛾6月底、7月初盛发,幼虫7月上旬盛
Wuhu area rice stem borers borer occurred in the most, the worst damage. Since 1956, I started to measure and report on its occurrence and harm, which has played a role in prevention and control. It has provided a basis for medium and long-term measurement as a result of systematically accumulating data. At the same time, I also gained some experience. In order to exchange and improve together, the author sorted out these bit by bit experience for reference. First, the basis of the work of the newspaper WuGong area of the borer for the third generation of multiple hair type, an incomplete four generations a year, the generation of hair moths ratio of 0.55 to 8.5 than 80 to the third The most rampant on behalf of. In the general year, the first generation of moths flourished in the middle and late May, larvae hatched in late May to early June. The second generation of moths flourished in late June and early July, and larvae flourished in early July