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我省为害水稻的螟虫主要为三化螟和二化螟;大螟和褐边螟除滨湖、丘陵稻区局部田块为害较重外,一般为害较轻。从螟虫的发生和防治情况来看,由于各地自然条件不同,耕作制度不一致,螟害的发生和防治有区域性的特点。但是,从全年螟虫防治工作来看,冬季和早春防治在不同稻区却都具有共同的意义。冬天,螟虫开始潜伏越冬,是
Stem borers and Sesamia inferens that damage rice in our province are mainly for rice stem borers; Sesamia inferens and Borerch frutescens are generally less damaging than local landfills in coastal lakes and hilly areas. From the occurrence of stem borers and prevention and control of the situation, due to the different natural conditions around the tillage system is inconsistent, the occurrence of pests and pests have a regional control characteristics. However, from the perspective of prevention and control of stem borers throughout the year, prevention and control in winter and early spring all have common meanings in different rice regions. In winter, stem borers begin to lurk over winter, yes