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六十年代初,褐稻虱在我国仅是次要害虫,但以后逐步发展成为我国南方稻区的主要害虫之一。它是水稻穗期的暴发性害虫,一般群栖于稻株的下部,刺吸液汁,导致水稻枯萎,甚至死亡。特别是对连作晚稻为害尤为严重,常因其大发生而形成“虱烧”(hopperburn),造成严重损失。据统计,过去10年内,在我国台湾省的中部和南部稻区因褐稻虱造成的损失达40％。此外,褐稻虱还能传播草丛矮缩病(grassy stunt)和蓬乱矮缩病(ragged stunt disease)。随着药剂防治次数的增加,抗药性问题也就随之出现。加上褐稻虱又是一种迁飞性昆虫,其抗药性还与虫源地的防治有关。这
In the early 1960s, brown planthopper was only a minor pest in China, but it gradually developed into one of the major pests in rice growing areas in southern China. It is a fulminant pest in the paddy heading stage, and generally inhabit the lower part of the rice plant and suck the juice, resulting in the withering and even death of the rice. Especially for the continuous cropping late rice is particularly serious, often because of its occurrence and the formation of “louse fever” (hopperburn), causing serious losses. According to statistics, over the past 10 years, the loss caused by the brown planthopper in the central and southern rice areas of Taiwan Province of China reached 40%. In addition, brown planthopper can transmit grassy stunt and ragged stunt disease. With the increase in the number of drug control, drug resistance problems will follow. Plus brown planthopper is a migratory insects, its resistance is also related to the prevention and treatment of insects. This