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时间:2020-04-16
《绿鳞象甲在甘蔗大豆间作田种群分布及取食性研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、广东农业科学2014年第13期63绿鳞象甲在甘蔗大豆问作田种群分布及取食性研究杨乃博,伍苏然,熊国如,肖春。,沈林波,张树珍z,杨本鹏z(1.海南大学农学院,海南海口570228;2.中国热带农业科学院热带生物技术研究所,海南海口571101;3.云南农业大学植物保护学院,云南昆明650201)摘要:间作模式是作物虫害综合防治的一种重要手段。通过田间甘蔗与大豆间作(1:1模式)、单作种植,调查绿鳞象甲发生规律、种群数量及空间分布。结果表明:绿鳞象甲成虫在大豆上重要发生期为5月上、中旬,甘蔗上主要集中在5-6月;问作或单作大豆田种群数量均高于甘蔗田;间作田甘蔗上种群数量高于单作田
2、,问作田大豆上种群数量则少于单作田;在甘蔗与大豆间作模式下均为聚集分布,强度随密度的上升而升高。室内取食性选择试验表明:绿鳞象甲雌、雄成虫均喜食大豆叶片,差异极显著;取食相同寄主时,雌虫取食量高于雄虫。关键词:绿鳞象甲;间作;甘蔗;大豆;取食选择性中图分类号:$433.5文献标识码:A文章编号:1004—874X(2014)13—0063—04PopulationdistributionandfoodchoiceofHypomecessquamosusinsugarcane—s0ybeanintercroppingYANGNai—bo,WUSu—ran,XIONGGuo—m2,
3、XIAOChun,SHENLin-bo2,ZHANGShu-zhen2,YANGBen-peng(1.CollegeofAgriculture,HainanUniversity,H~kou570228,China;2.InstituteofTropicalBioscienceandBiotechnology,ChineseAcademyofTropicalAgricuhuralSciences,Hdkou571101,China;3.CollegeofPlantProtection,YunnanAgriculturalUniversity,Kunming650201,China
4、)Abstract:Intercroppingisanimportantmeansofthepestintegratedcontroltechniques.Inthisstudy,occurrencetrendofHypomecessquamosuspopulationandspatialdistributionwereinvestigatedinsugarcane—soybeanintercropping1:1mode.Theresultsshowedthat.thepeakperiodofH.squamosusoccuredinsugarcanewasbeginningan
5、dmiddlethirdofamonthinMay.Insoybean,thepeakperiodwasMayandJune.ThenumberofH.squamosusinsoybeanmonocuhureorintercroppingwassignificantlyhigherthanthatinsugarcane.ThenumberofH.squamosusinsugarcanemonocuhurewassignificantlyhigherthanthatinintercropping.ThenumberofHypomecessquamosusinsoybeanmono
6、cuhurewassignificantlylowerthanthatinintercropping;ThespatialdistributionpatternsofH.squamosusbelongedtoaggregatingdistributionandintensityincreasedwiththedensityofH.squamosus.Thefeedingpreferenceshowedthat.bothoftheH.squamosusmaleandfemaleweremoreliketoeatsoybeanverysignificant,andthefemale
7、eatenmorethanmalewhentheyeatenthesamekindofhostplant.Keywords:Hypomecessquamosus;intercropping;sugarcane;soybean;feedingpreference甘蔗(Saccharumsinensis)是1年生或多年生宿根主要分布于广西、云南、广东、海南等蔗区。甘蔗生长期热带和亚热带草本植物,是制糖的主要能源作物,占世较长,在整个生长发育期内受到多种虫害威胁。绿鳞象界糖产量的60%,在我国食糖
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