近年来,水稻灰飞虱在太仓市严重发生,不仅传播条纹叶枯病,引起减产,还在穗部直接吸汁为害影响产量和品质。据测定,灰飞虱吸汁为害可造成千粒重下降6.8%～23.9%,对直播稻的为害比移栽稻更重。灰飞虱转移穗部为害源自成虫产卵部位向穗部转移,4代成虫在穗轴、穗颈上的产卵量占全株产卵量的79.0%～83.6%。 In recent years, Laodelphax striatellus in Taicang City, a serious occurrence, not only the spread of striped leaf blight, causing reduced production, but also directly affect the yield of succulent spike and yield quality. It was determined that the siphonage juice damage can cause 1000-grain weight decreased by 6.8% to 23.9%, the damage to direct-seeded rice heavier than the transplanted rice. The fecundity of planthopper transferred from the planthopper stems from the spawning part of the adult to the panicle, and the spawning number of the 4th generation adult on the cob and panicle accounted for 79.0% -83.6% of the whole plant.