广西稻田粘虫越冬情况调查初报

【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。...

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Published in南方农业学报 Vol. 47; no. 2; pp. 212 - 216
Main Author 蒋显斌 黄芊 凌炎 陈玉冲 蒋婷 符诚强 黄所生 吴碧球 李成 黄凤宽 龙丽萍
Format Journal Article
LanguageChinese
Published 广西农业科学院水稻研究所/广西水稻遗传育种重点实验室,南宁,530007%广西农业科学院植物保护研究所,南宁,530007%广西农业科学院,南宁,530007%广西大学农学院,南宁,530005 2016
Subjects
广西
水稻
粘虫
调查
越冬
M.separate(Walker)
调查
越冬
Guangxi
investigation
overwintering
水稻
广西
粘虫
rice
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ISSN2095-1191
DOI10.3969/j:issn.2095-1191.2016.02.212

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Summary:【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。
Bibliography:Objective】The number and developmental stages of overwintering Mythimna separate（Walker） in paddy fields of Guangxi was investigated, in order to provide fundamental data for integrated preventing controlling technique.【Method】The number and developmental stages of M. separate（Walker） were recorded in paddy fields on survey sites of Nanning, Liuzhou, Guilin, Beihai, Qinzhou, Yulin, Baise, Hezhou and Hechi in winter of 2014 and 2015, and the population density was calculated based on field data. 【Result】The mature larvae and pupae of M. separate were found in paddy fields in Guangxi in the winter, and which were mostly hiding in the rice straw or pile. Furthermore, the normal population density was 0.30-1.10 individuals per square meter. In 2014 and 2015, the highest population densities occurred in Quanzhou county, Guilin city, which were 1.98 and 5.30 individuals per square meter, respectively.Furthermore, the population density in eastern region was the higher than that in west region, and the population de
ISSN:2095-1191
DOI:10.3969/j:issn.2095-1191.2016.02.212