论文部分内容阅读
[目的]研究四川省西部水稻螟虫组成及发生危害特点。[方法]于2007～2009年对四川西部稻区螟虫的组成及危害进行了系统调查。[结果]川西稻区螟虫由二化螟、三化螟和大螟组成。二化螟在川西绝大部分稻区都是优势危害种群;三化螟主要在龙泉和青白江及部分稻区有分布为害,表现出扩散加重趋势;大螟数量很少,但在水稻生长后期危害较重。[结论]研究结果为川西稻区水稻螟虫的有效防控措施的提出奠定了理论基础。
[Objective] The research aimed to study the composition and occurrence characteristics of rice stem borers in western Sichuan Province. [Method] The composition and damage of stem borers in the rice area of western Sichuan were systematically investigated from 2007 to 2009. [Result] The stem borers in the western Sichuan were composed of the striped rice borer, the striped borer and the Sesamia inferens. Chilo suppressalis is dominant in most rice fields in western Sichuan. The stem borer (Chilo suppressalis) is mainly distributed in Longquan, Qingbaijiang and some rice regions, showing a trend of increasing diffusion. The number of Sesamia inferens is small, Heavier [Conclusion] The results laid the theoretical foundation for the effective prevention and control measures for rice stem borers in the rice-planting areas of western Sichuan.