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近日,湖南省植保植检站召集14个市州植保站、14个二化螟重发县市区植保站负责人,在长沙召开二化螟灾变机制与防控对策研讨会。会议认为,造成今年衡阳、株洲、湘潭等局部区域二化螟成灾的原因复杂,主要有二化螟抗性水平提高,水稻种植结构杂、桥梁田多,二化螟发育不整齐甚至在重发区有世代重叠现象,7~9月份高温等客观原因,及第二代二化螟防治不到位与第三、四代防治技术水平不高、错过防治适期、田间缺水等主观原因。与会代表普遍认
Recently, Hunan Plant Protection Station held 14 prefectural plant protection stations and 14 headwaters of the Siberian Habitat for Chilo suppressalis in Chongqing, and held a symposium on catastrophe mechanism and prevention and control measures for Chilo suppressalis in Changsha. The meeting held that the causes of the occurrence of Chilo suppressalis in some areas such as Hengyang, Zhuzhou and Xiangtan this year are complicated due to the fact that the resistance to Chilo suppressalis increased, that is, the rice planting structure, the bridge, There are overlapping generations in the area, objective reasons such as high temperature in July and September, lack of prevention and control of the second generation rice stem borer and third and fourth generations of prevention and control technology are not high, and the subjective reasons such as prevention and control period and water shortage in the field are missed. Participants generally recognized