近年来,对晚稻飞虱的药剂防治,各地大多采用“压四控五”的策略,取得了一定成效。但是,“压四控五”技术性较强,四代压得稍不及时,控五效果就不显著;为了“保险”,往往扩大四代防治面积;同时,褐飞虱的发生发展,又受当年气候、栽培条件等综合因素影响,年度和地区之间变异很大。? In recent years, the prevention and control of late rice planthoppers, mostly adopted the “pressure four control five” strategy, and achieved some success. However, “pressure four controls five” technology is relatively strong, the fourth generation of pressure is slightly less timely, control effect is not significant five; in order to “insurance”, often to expand the control area of ​​four generations; the same time, the occurrence and development of BPH, , Cultivation conditions and other factors, the variation between the year and the region is great. ?