秀山县2023年褐飞虱大发生特点及原因分析

Outbreak Characteristics and Causes of Brown Planthopper, Nilaparvata lugens 2023, in Xiushan County

摘要: 褐飞虱是秀山县水稻生长后期稻飞虱优势种群，2023年秀山县褐飞虱大发生。本文分析秀山县褐飞虱大发生的特点表现为灯诱始见期偏迟、虫量偏低；灯诱虫量大；秧田虫量低；水稻本田虫量暴发性增长；预测圃虫量前期偏低，后期激增；本田主害期明显等。从地形地貌、气候、管理水平等方面分析褐飞虱大发生原因，并对褐飞虱防控提出建议。

Abstract: The Brown Planthopper (Nilaparvata lugens) is the dominant population of rice planthopper at the late growth stage in Xiushan County. Nilaparvata lugens is a major 2023 in Xiushan County. The characteristics of the outbreak of brown planthopper (Nilaparvata lugens) in Xiushan County were as follows: late starting stage and low insect quantity; high insect quantity induced by lamp; low in-sect quantity in rice seedling field; explosive increase of insect quantity in rice field; low prestage of prediction of insect quantity in rice nursery; In the later period, the number of crops increased sharply, and the main damage period of Honda was obvious. The reasons for the occurrence of brown planthopper were analyzed from the aspects of landform, climate and management level, and some suggestions for the control of brown planthopper were put forward.