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三化螟Tryporyza incertulas(Walker)是我国最重要的水稻害虫之一。在广东历年表现为间歇大发生,近年粤西及粤北地区仍遭受严重为害。因而继续进行三化螟药剂防治的毒理以及生理、生态学方面的深入研究,将有助于提高其综合防治的技术水平。 三化螟以老熟幼虫在禾头内越冬,于次年春暖(16℃以上)即行化蛹及羽化。但由于秋后犁冬晒白、春雨加速禾头的腐烂及田间病原微生物的致病感染,尤其是惊蛰前后浸水沤田
Tryporyza incertulas (Walker) is one of the most important rice pests in our country. In Guangdong over the years showed intermittent occurrence of large, in recent years, western Guangdong and northern regions are still suffering serious damage. Therefore, the further study on the toxicology of the stem borer pesticides and their physiological and ecological aspects will help to improve the technical level of its comprehensive prevention and treatment. Borer in order to mature larvae overwinter in the Wo head in the next spring and winter (16 ℃ or more) that line pupation and eclosion. However, due to autumn plow winter sun white, spring accelerated He rot and the pathogenic microorganisms in the field of pathogenic infections, especially before and after the frostbite Shu Tian