皖江流域水稻关键虫害发生动态区域监测

水稻虫害监测与防控对保障粮食安全具有重大意义。皖江流域处于长江中下游位置，是安徽省水稻的主产区，上接湖北、江西，下接江苏等水稻生产大省，战略意义十分重大。本研究团队对皖江流域的主要虫害，进行了长期的实时监测工作，设立了固定的田间监测点（每个城市水稻主产区2个点，共计12点），辐射皖江流域水稻生产的绝大部分区域。在此基础上，系统整理了各类水稻害虫的发生情况与危害等级。结果显示，当前皖江流域主要的水稻害虫为稻纵卷叶螟，其发生范围广，对水稻的危害较大，主要发生区域为：铜陵、芜湖、宣城、马鞍山。此外，二化螟呈现局部发生，同时个别地区的二化螟出现较强的抗药性，需要高度重视。目前，稻纵卷叶螟在江苏水稻种植区的发生状况正逐渐加重，呈现局部爆发的趋势。而稻纵卷叶螟具有迁飞性，需要各个区域联防联控，因此，本研究的结果对于长江中下游流域水稻主要虫害的区域综合防治具有指导意义。

Dynamic regional monitoring of key rice pests in Wanjiang River Basin

The monitoring and control of rice pests is of great significance to ensure grain yield. Wanjiang river basin is located in the middle and lower reaches of the Yangtze River. It is the main rice planting area in Anhui Province, which is connected with Hubei, Jiangxi and Jiangsu. We has carried out long-term real-time tracking and monitoring of the occurrence of key rice field pests in the Wanjiang River Basin, and set up fixed field monitoring points. The main rice producing areas of each city focus on monitoring 2 points, a total of 12 points. On this basis, we comprehensively sorted out the occurrence and hazard level of various pests. The results show that the main rice pest in Wanjiang river basin is rice leaf roller, which occurs in a wide range and causes great harm to rice fields, mainly in Tongling, Wuhu, Xuancheng, Ma''anshan. Chilo suppressalis in some areas has strong drug resistance, which needs to be paid high attention. At present, the occurrence of rice leaf roller in Jiangsu rice planting area is gradually increasing, showing a trend of local outbreak. Rice leaf roller has the habits of migration and needs joint prevention and control in various regions. Therefore, the results of this study have guiding significance for the regional comprehensive control of major rice pests in the middle and lower reaches of the Yangtze River.