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稻纵卷叶螟为害状显明,叶片被害后变白,易识别。因此,广大社员对防治卷叶螟比防治稻螟、稻飞虱还更重视。但往往产生偏见,存防治策略上出现宁“左”勿“右”的现象。表现在防治指标订得比较高、打保险药,或出现少数白叶就如临大敌,大张旗鼓地动员打药。这样不仅在经济效果上得不偿失,而且还造成过多杀伤有益天敌,破坏生态平衡,造成农药污染的恶果。
Rice leaf roller damage is obvious, after the victim was white, easy to identify. Therefore, the majority of members of the prevention and control of leaf roller than rice stem borer, planthopper also pay more attention. However, prejudices are often prevalent and there is a phenomenon of “not the right” rather than the “left” in the prevention and control strategy. Performance in the prevention and control indicators set higher, playing insurance drugs, or a few white leaves on the enemy, mobilize to fight in full swing. This not only outweighs the economic benefits, but also causes too many harmful natural enemies, destroying the ecological balance and causing the harmful effects of pesticide pollution.