近年来由于双季稻栽培面积的逐渐扩大,水稻单位面积产量已显著提高,因此,“单改双”“间改连”在许多地区已成为粮食增产的有效措施。但由于双季稻生育期长,给害虫繁殖提供了有利的条件,晚稻螟害特别严重。而且早稻一定要早插,晚稻才能赶上季节;因此,运用迟栽避螟的方法,已不适应于双季稻地区。要想双季稻区根本解决螟害问题,就得首先解决如何才能把越冬螟虫消灭得好的问题。这就要求我们针对改制后的新情况,提出有效的防治措施,以确保两季丰收。 In recent years, due to the gradual expansion of double cropping rice area, rice yield per unit area has been significantly increased, therefore, “single change double” and “change between” in many areas has become an effective measure to increase grain production. However, due to the long growing season of double cropping rice, it provided favorable conditions for the propagation of pests and the damage of late rice stem borers was particularly serious. And early rice must be inserted early, late rice to catch up with the season; therefore, the use of late planting and shelter borer method, has not adapted to double cropping rice regions. In order to solve the problem of stem borers in double-crop rice areas at its root, we must first solve the problem of how to eliminate the wintering stem borers well. This requires that we put forward effective prevention and control measures aimed at the new situation after the reform so as to ensure a good harvest in the two quarters.