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Studies On The Pest Management Of Cinnamomum Migao And Biological Characteristics Of Charaxes Bernardus

Posted on:2008-06-20Degree:MasterType:Thesis
Country:ChinaCandidate:S M YuanFull Text:PDF
GTID:2143360215466659Subject:Zoology
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Through the study about insects in Bane ,Shuicun Cinnamomum migao H.W.Li plant bases of Libo county in Guizhou province and indoor rearing of some insects ,the results indicate that there are 56 species of insects totally. They belong to 8 orders and 37 families and 52 genera respectively. Of all ,there are 40 species of pests belonging to 4 orders and 30 families and 38 genera,there are 16 species of natural enemies belonging to 5 orders and 8 families and 14 genera .The occurrence rules and living habits of Eupromus rubber (Dalman), Eupromus nigrovittatus Pic,Charaxes bernardus (Fabricius),Chilasa paradoxa (Zinken) ,Papilio xuthus Linnaeus, Philosamia cynthia Walker et Feldev,Thosea sinensis (Walker), Setora postornata(Hampson),Orthaga achatina Butler and Stephanitis macaona Drake are known through field investigation.The control objects of Cinnamomum migao one year should be put emphasis on the adult Philosamia Cynthia Walker et Felder and young larvae of the first generation Orthaga achatina Butler between April and May,their adult Eupromus rubber (Dalman) &Eupromus nigrovittatus Pic,their eggs and their young larvae between July and August( in addition,to give attention to the second generation larvae of Chilasa paradoxa (Zinken) and Charaxes bernardus (Fabricius),Chilasa paradoxa (Zinken) & Charaxes bernardus (Fabricius)) before winter.Limassolla duanchana sp.nov is found during field investication in Nov. 2006.It occrurs with Stepphantis macaona Drake. The leaves get yellow even rusty when they occur together on leaves of cinnomomum migao. It needs further study to know about its occrunce.The investigation of their natural enemies shows that the species of them are richful. They are mostly polyphagous such as bicolor bicolor Fabricius , Vespa Polistes antennalis Perez(Hymenoptera: Vespidae), Sphex hameorrhoidlis Fabricius (Hymenopetra: Sphecidae) ,Hierodula patellifera Serville(Mantodea:Mantidae), Menochilus sexmaculata (Fabricus), Menochilus quadriplagiata (Swartz) (Coleopte-ra:Coccinellidae)etc.Besides these ,there are other natural enemies such as plentiful spiders in base and birds in peripheral forest.The measures of integrated pest management(IPM) are put forward according to occurrence of pests,plant base environment and the biological characteristic of Cinnamomum migao etc. Emphasis should be put on plantation structure,field management,the improvement of soil quality,physical control and biological control etc. When necessary ,chemical pesticides with high effectivity,low toxicity,and low residue are to be used.The biological characteristic of C.bernardus (Fabricius) is studied also during experiment time. Its life history is as follows: It occurs three generation one year .Aging larvae of the third generation hibernate from November to April (It would begin to eat temporarily when the temperature rise to a certain point).The first generation larvae appears between May and mid-June;The second one appears between the first ten days of a month of May and mid-August;the third one appears in September. The field investigation of the second generation larvae of C.bernardus shows its development phase as the following: 1st instar -4.5-6.5 days,2nd~5th instar -5~6 days respectively ,pupa -about 10 days. There is about one day of stagnation phase before ecdysis each time .It adds up to about 40 days .The relation between the breadth of head capsules and each instar shows that they are in direct proportion .In order to alter the disadvantage of monotonous planting , plantation structure should change for interplanting and intercropping. The planning and design of Cinnamomum migao GAP plantation in favor of offering reference for the later Cinnamomum migao GAP plant is put forward according to ecological pest control principles,standard operating produce ,biological and ecological characteristic of geo-authentic crude drugs,occurrence of insects and biological characteristic of other economic & medicinal plants etc. in order to achieve its effective reunification economically,ecologically and socially.
Keywords/Search Tags:Cinnamomum migao H.W.Li, insect, species, charaxes bernardus (Fabricius), occurrence rule, ecological control
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