谈谈早稻二化螟的综合防治

• 作 者: 曹立耘
• 机 构: 湖南省沅江市农业局,
• 出 处: 农药市场信息
• 发表日期: 2016年09期
• 关键词: 早稻 杂交早稻 田间调查 综合防治 洞庭湖 油菜 量大 害虫 湘北地区 三化螟

在一些地方早稻二化螟的危害因基数高,油菜等冬作物收割迟等因素影响,近几年一代二化螟已成为洞庭湖湘北稻区的主要害虫。据各地调查,近年来的情况均是一代二化螟灯下蛾量多、田间卵量大、枯鞘丛率高,发生程度几乎是年年重发,已成为早稻(尤其是杂交早稻)生产上的不可忽视的害虫,应引起高度注意,必须加强田间调查,准确掌握虫情,及时发出病虫预报,不失

In some places, the damage of stem borer (Chilo suppressalis) is affected by the high base number and later harvesting of winter crops such as rapeseed. In recent years, Chilo suppressalis has become the major pest in the rice planting area in the north of Dongting Lake. According to the surveys conducted in various places, the situation in recent years is that there are many moths in the moth, the large amount of eggs in the field, the high rate of sclerenchyma, the degree of occurrence is almost year after year and has become the production of early rice (especially the hybrid early rice) On the can not be ignored pests, should attract great attention, we must strengthen field surveys, accurate grasp of insects, pests and diseases in a timely manner forecast, without losing