水稻灰飞虱转移穗部为害及其对产量损失的观察  

Observation on rice spikes infected by Laodelphax striatellus and rice yield loss

作　　者：顾伯良[1] 薛萍霞 施文贤 周丽花[1] 

机构地区：[1]江苏省太仓市植保植检站,江苏太仓215400

出　　处：《中国植保导刊》2005年第5期7-8,共2页China Plant Protection

摘　　要：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%。Laodelphax striatellus occurred in heavy level in Taichang city in recent years. It not only transmits rice stripe virus disease,but also sucks rice spikes juice and directly causes yield loss. Results of direct measurement indicated that weight per thousand rice seeds decreased 8% to 23.9% due to sap sucking by Laodelphax styiatellus,yield loss was more significant in directly sowing rice than in transplanted rice. The infestation of rice spikes by Laodelphax styiatellus was caused by laying eggs of the insect adults in the spikes,eggs laid by the 4th generation of insec adults in spikes or the positions between spikes and straws are occupying 79.0% to 83.6% of the total.

关 键 词：灰飞虱 水稻穗部 虫量 产卵部位 产量损失 

分 类 号：S435.112[农业科学—农业昆虫与害虫防治]