本工作组1956年在孝感朋兴乡开展大面积综合治螟工作的同时,结合试行预测预报进行了研究初步结果如后。 一 水稻螟虫的发生为害 湖北省以二化螟为主,分布遍及全省,较三化螟广泛;但不同地区三化螟发生数量也相当多。二化螟一年一般发生3代,间有少数的第4代发生, In 1956, the working group conducted a large-scale comprehensive management of rice borers in Pengxing Township, Xiaogan, and carried out the preliminary results of the study in combination with the pilot forecast. The occurrence of a rice stem borer Hubei Province mainly to Chilo suppressalis, distributed throughout the province, more than the third access control Borer; But the number of occurrence of Borer in different areas is quite large. Chilo suppressalis generally occurs three generations a year, between a few fourth generation occurred,