论文部分内容阅读
１９８８和１９９０年秋季，在南京市郊江浦县用超高频雷达、气球拖带空中捕虫网及田间笼罩，对褐飞虱秋季回迁进行了研究。江浦县位于中国东部江淮稻区，以种植单季中、晚稻为主（中稻占７０％），随着水稻的灌浆，成熟，褐飞虱长翅型成虫迁出从８月末到９月末逐渐增多。９月中旬，季风转为东北风占优势时，正待迁飞的虫群数量达到高峰，东北风被台风加强时，回迁尤为加快。９月间季风风向的这一转变，对褐飞虱后代的存续是重要的，它保证了迁飞虫群大部分被带到适宜冬春季繁衍的地方。
In the autumn of 1988 and the fall of 1990, the fall of the brown planthopper was studied in Jianpu County, a suburb of Nanjing, by using ultra-high frequency radar, balloon catching net in the air and field coverage. Jiangpu County is located in the Jianghuai rice-growing area in eastern China, where single-season and late-season rice are mainly planted (70% of middle-grade rice). With the paddy filling and maturity, the long-legged adult planthopper migration gradually increased from the end of August to the end of September. In mid-September, when the monsoon became northerly, the number of swarm to be relocated reached a peak and the northeast wind was strengthened by the typhoon. This change in the monsoon wind direction in September is important for the survival of the progeny of the brown planthopper, and it ensures that the majority of migratory insects are brought to a place suitable for breeding in winter and spring.