北京市延庆区生姜害虫发生情况调查及防控建议

2017—2019年，在延庆对生姜田害虫开展调查，结果发现食叶害虫主要有3种，分别为棉铃虫Helicoverpa armigera （Hübner）]、甜菜夜蛾Spodoptera exigua （Hübner）]和粘虫Mythimna separata（Walker）]，钻蛀性害虫为亚洲玉米螟Ostrinia furnacalis （Guenée）]，地下害虫只发现轻微危害，未查到具体种类。地下害虫发生相对较早，食叶害虫和钻蛀性害虫主要发生于生产后期。不同年份间，害虫发生种类差异较大，2017年以钻蛀性害虫为主，还有食叶害虫即棉铃虫和甜菜夜蛾，2018年和2019年以食叶害虫为主，主要是棉铃虫，还有少量粘虫。

Investigation on Insect Pest on Ginger and Control Suggestion in Yanqing District of Beijing

Abstract: From 2017 to 2019, insect pests on ginger fi eld were surveyed during growing season and three defoliators were founded in the field, which included Helicoverpa armigera (Hübner), Spodoptera exigua (Hübner), Mythimna separata (Walker) and one borer Ostrinia furnacalis (Guenée). Few damages caused by soil insect were seen but no soil insect was confi rmed. For them, soil insect occurred earlier than defoliator and borer which appeared in the middle or later of the growing season. Dominance of insect pests were different in three years. In 2017, borer was dominant in ginger fi eld, but in 2018 and 2019 the defoliators were the main pests including some larva of H. armigera and few larva of M. separata .