广西蔗区红尾白螟分布区域及危害程度调查  

Distribution areas and damage degree of Scirpophaga excerptalis(Walker)in sugarcane areas of Guangxi

作　　者：魏吉利[1] 黄诚华[1] 潘雪红[1] 商显坤[1] 王丹[2] 韦喜 罗荣森 

机构地区：[1]广西农业科学院甘蔗研究所,南宁530007 [2]广西大学,南宁530005 [3]广西来宾东糖迁江有限公司,广西来宾546119

出　　处：《南方农业学报》2016年第4期594-598,共5页Journal of Southern Agriculture

基　　金：广西自然科学基金项目(2014GXNSFBA118117);现代农业产业技术体系建设专项项目(CARS-20-2-3);广西农业科学院科技发展基金项目(桂农科2013JQ07);广西农业科学院基本科研业务专项项目(2015YT06)

摘　　要：【目的】了解红尾白螟在广西甘蔗主产区的分布及危害程度,掌握其生活习性及发生规律,为制定甘蔗红尾白螟防治措施提供科学依据。【方法】2014年调查红尾白螟在广西甘蔗主产区(百色、来宾、北海、崇左、南宁、河池、柳州)的分布,并定时定点调查甘蔗苗期、伸长期和成熟期红尾白螟发生程度。【结果】红尾白螟主要分布在百色、来宾、北海、崇左和南宁蔗区,其中以百色蔗区危害最重,年平均为害率为(9.00±2.797)%,其次为来宾、北海、崇左、南宁,为害率分别为(2.66±1.094)%、(1.94±0.923)%、(1.44±0.383)%和(0.80±0.283)%,各蔗区间无显著性差异(P<0.05)。甘蔗成熟期较苗期受红尾白螟危害重,百色蔗区苗期的红尾白螟为害率为(1.72±0.367)%,而成熟期达(20.00±5.088)%,极显著高于其他蔗区(P<0.01)。【结论】甘蔗红尾白螟在广西百色、来宾、北海、崇左、南宁等蔗区均有分布,其中为害最重的是百色蔗区,且甘蔗成熟期受害最重。[Objective]The present experiment was conducted to investigate distribution and and damage degree of Seirpophaga exeerptalis（Walker） in main sugarcane areas of Guangxi, and understand its life habits, in order to provide reference basis for formulating control measures of S. excerptalis. [Method]The distribution areas of S. excerptalis in Guangxi were investigated in 2014, including Baise, Laibin, Beihai, Chongzuo, Nanning, Hechi and Liuzhou. Meanwhile, the dam- age degree at seedling, elongation and maturity stage were studied at fixed time and and plaee. [ Result ] S. excerptalis were mainly distributed in the sugareane areas of Baise, Laibin, Beihai, Chongzuo and Nanning, especially, the sugar- cane area of Baise was suffering with the most serious damage, and its annual average damage rate was （9.00±2.797）%, followed by sugarcane areas of Laibin, Beihai, Chongzuo and Nanning, and their annual average damage rates were （2.66±1.094）%, （1.94±0.923）%, （1.44±0.383）%, （0.80±0.283）%, respectively（P〉0.05）. There was no significant dif- ference among sugarcane areas（P〉0.05）. The damage caused by S. excerptalis at maturity stage was more serious than that at seeding stage. And in sugareane area of Baise, the damage rate at seeding stage was （1.72±0.367）%, and that at maturity stage was （20.00±5.088）%, respectively, both were extremely significantly higher than other sugarcane areas. [ Conelu- sion]S, exeerptalis is distributed in sugarcane areas of Baise, Laibin, Beiha, Chongzuo and Nanning, especially the sug- arcane area of Baise suffers with the most serious damage, and the most serious damage oeeurs at maturity stage.

关 键 词：甘蔗 红尾白螟 分布区域 危害程度 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]