香蕉褐足角胸叶甲发生规律研究  

Occurrence regularity of new banana pest Basilepta fulvipes

作　　者：陈彩贤[1] 李成[2] 陆温[2] 覃连红[1] 欧善生[1] 王小欣[1] 黄艳花[1] 刘沿伶[1] 

机构地区：[1]广西农业职业技术学院,南宁530007 [2]广西大学农学院,南宁530005

出　　处：《南方农业学报》2012年第5期609-615,共7页Journal of Southern Agriculture

基　　金：广西自然科学基金项目(桂科自0728072);广西农业职业技术学院科学研究与技术开发计划应用研究项目(农职院A032511)

摘　　要：【目的】研究香蕉褐足角胸叶甲的发生规律,为进一步开展害虫的预测预报及防治提供科学依据。【方法】2007～2011年采用室内控温饲养和大田系统定点调查法,对香蕉褐足角胸叶甲的发生规律进行调查和研究。【结果】褐足角胸叶甲在广西南宁1年发生3～4代,夏秋干旱无灌溉条件的地区1年发生3代,反之则1年发生4代;以各龄幼虫在土壤中越冬,次年3月下旬～4月上旬开始化蛹、羽化,4月上、中旬为成虫出土始见期;成虫多数将卵聚产于腐烂湿润的假茎、枯叶组织内;成虫有3个高峰期,分别为5月中旬、7月中下旬和10月中旬;2～3月土温稳定在18℃以上15～25d后,越冬老熟幼虫逐渐开始化蛹,4月上旬出土为害;降雨后利于幼虫化蛹和成虫成批出土为害,1周内降雨量累计达10mm以上,雨后1周幼虫大量化蛹,雨后2～3周成虫出现高峰期;香蕉品种之间虫量差异不显著;砂土、无喷灌条件、有杂草、不覆盖地膜的蕉地幼虫和成虫的密度大。【结论】香蕉褐足角胸叶甲在广西南宁1年发生3～4代,以各龄幼虫在土壤中越冬,成虫多数将卵聚产于腐烂湿润的假茎、枯叶组织内;雨后利于幼虫化蛹和成虫成批出土为害;砂土、无喷灌条件、有杂草、不覆盖地膜的蕉地幼虫和成虫密度大;香蕉品种对成虫发生量没有影响。[Objective ]Occurrence regularity of Basilepta fulvipes was investigated in banana fields in order to help in prediction and control of the pests. [Method]Indoor temperature controlled breeding and field system positioning methods were adopted to investigate the occurrence regularity of Basilepta fulvlpes from 2007 to 2011. [Result ]In Nanning of Guangxi, B. fulvipes showed three or four generations annually. In summer and autumn, its three generations were observed in non-irrigated drought areas, while in winter and spring, four generations were observed in irrigated areas. Larvae of different ages stayed in soils during overwintering. During next last ten-day of March to firth ten-day of April, pupation and eclosion occurred. Around first and second ten-day of April, adults emerged out of the soil, most of which produced eggs in the rotton moist tissue of cauloid and withered leaves. The peak periods of adults were at mid May, mid to last ten days of July and mid October. From February to March, when soil temperature kept above 18~C after 15 to 20 days, overwinter mature larvae gradually became pupae, which moved above the earth surface during first ten-day period of April. Precipitation was a beneficial factor for insect growth. With over 10 mm accumulative precipitation for one week, lots of larvae became pupae after one week. The occurrenc peak period of adult was observed after two to three weeks of rainfall. Number of insects amount did not differed much among various banana varieties. Larva and adult density were higher in the non-irrigated uncovered sandy orchards with weeds. [Conclusion]Three to four generations of B. fulvipes were observed annually in banana fields of Nanning, Guangxi. Larvae of different ages overwintered in soil, and the majority of adults produced eggs in the rotton moist tissue of cauloid and withered leaves. Precipitation was favorable for larva pupation and adult damage out of soil. Larva and adult density were higher in the non-irrigated uncovered sandy orchards with weeds. Bana

关 键 词：香蕉 褐足角胸叶甲 发生规律 南宁 

分 类 号：S436.68[农业科学—农业昆虫与害虫防治]