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收集整理了云霄县2005—2015年白背飞虱灯下诱集数据、田间调查数据及相关气象因素,对其发生特点进行了分析。结果显示,云霄县白背飞虱为优势种群,占91.3%;常年发生7~8代,以早稻第四(3)代、晚稻第七(6)代为主害代,其他代次为害较轻。近11年来,白背飞虱发生期提早,并呈现间歇性暴发为害特点。分析表明,导致白背飞虱暴发的关键因素有迁入虫源量大小、迁入期早晚和迁入峰次多少、是否具备适宜虫源迁入降落的气流和气象条件,以及害虫抗药性程度等。在此基础上,提出了强化虫情监测预报,转变防控理念及应用绿色防控技术等防控对策。
Collecting and collecting the trap data of whitebacked planthopper in Yunxiao County from 2005 to 2015, the field survey data and the related meteorological factors, and analyzed their characteristics. The results showed that the whitebacked planthopper was the dominant species in Yunxiao County, accounting for 91.3% of the total population. The perennial occurred from 7 to 8 generations, with the fourth (3) generation of early rice and the seventh (6) generation of late rice as the main generation, . In the recent 11 years, the occurrence of whitebacked planthopper occurred earlier and showed the characteristics of intermittent outbreak. The analysis showed that the key factors that led to the outbreak of Sogatella furcifera were the size of the migratory insect population, the rate of immigration and the number of migratory peak, whether the air flow and meteorological conditions were suitable for the immigration of pests, and the degree of insecticide resistance Wait. On this basis, we put forward some countermeasures for prevention and control such as strengthening insect monitoring and forecasting, changing prevention and control concept and applying green prevention and control technology.