稻飞虱是我市水稻的主要害虫,每年均造成不同程度的损失。一般年份损失5～15%,大发生年份损失达50%以上。以前生产上采用叶蝉散、速灭威等农药防治,存在着药效期短、使用频次高,从而增加施药成本,而且防效越来越差等问题。近几年来,推广高效长效的 Planthopper is the main pest of rice in our city, causing varying degrees of loss every year. General years of loss of 5 to 15%, the annual loss of more than 50%. In the past, the production of leafhoppers scattered, speed off Granville and other pesticide control, there is a short period of efficacy, the use of high frequency, thereby increasing the cost of drug delivery, but also getting worse performance and other issues. In recent years, promotion of efficient and long-lasting