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【目的】了解广西稻田粘虫越冬虫态及虫源基数,为全国粘虫综合防控提供基础数据。【方法】2014~2015年,在广西南宁、柳州、桂林、北海、钦州、玉林、百色、贺州、河池等地稻田选取多个调查点,记录调查田块发现的粘虫虫态及数量,计算虫口密度。【结果】广西稻田粘虫越冬虫态有老熟幼虫和蛹,多在稻桩或稻草堆内越冬。一般虫口密度为0.30~1.10头/m2,2014年和2015年均以桂林市全州县的虫口密度最高,分别达1.98和5.30头/m2;广西粘虫越冬虫口密度表现为东部较西部高,北部较南部高。【结论】广西粘虫分布较广,一般以老熟幼虫和蛹在稻桩或稻草堆内越冬。
【Objective】 The objective of this study was to understand the overwintering state of insect and its population base in paddy field in Guangxi and provide the basic data for the prevention and control of armyworm and armyworm. 【Method】 From 2014 to 2015, a number of investigation points were selected from paddy fields in Nanning, Liuzhou, Guilin, Beihai, Qinzhou, Yulin, Baise, Hezhou and Hechi of Guangxi, Insect density. 【Result】 The overwintering larvae and pupae of overwintering insect in rice paddy field in Guangxi Province were mostly overwintering in the rice piles or straw mounds. The average density of pest population was 0.30-1.10 heads / m2. In 2014 and 2015, the population density of pest population in Quanzhou county of Guilin was the highest, reaching 1.98 and 5.30 heads / m2 respectively. The population density of overwintering pest in Guangxi was higher than that in the west, The north is higher than the south. 【Conclusion】 The armyworms in Guangxi are widely distributed. They usually winter in paddy or straw mounds with mature larvae and pupae.