白背稻虱的发生规律

• 作 者: 朱金城
• 机 构: 广西全州病虫测报站
• 出 处: 昆虫知识
• 发表日期: 1974年04期
• 关键词: 白背稻虱 褐稻虱 灰稻虱 桂北地区 虫口密度 怀卵量 第三代 游草 乳熟期 齐穗期

在广西的桂北地区,白背稻虱(Sogata furcifera)是为害早稻的严重害虫之一,在6月中下旬,往往暴发成灾。据在全州地区观察,发生最多的是白背稻虱,褐稻虱和灰稻虱次之,主要为害早稻,晚稻则发生较轻。白背稻虱一年发生6—7世代,第一至第四代为害早稻,第三至第四代为害中稻,第四至第七代为害晚稻。到第三代以后,则出现世代交错重迭,而长短翅型成虫

In Guangxi’s northern part of Guangxi, Sogata furcifera is one of the major pests responsible for early rice, and in late June it was often outbreaks. According to the observation in the whole prefecture area, the most frequent occurrences are whitebacked planthopper, brown planthopper and gray flies, which mainly affect early rice and late rice occur less. White back louse occurs 6-7 generations a year, the first to the fourth generation of early rice damage, the third to the fourth generation of mid-season rice, the fourth to the seventh generation of late rice damage. After the third generation, there are generations of staggered overlap, while the length of winged adults