云南省保山市玉米田害蟲與天敵種群周年動態(tài)及對產(chǎn)量的影響

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關(guān)鍵詞玉米；害蟲；天敵；危害損失； 中圖分類號S435.132文獻(xiàn)標(biāo)識碼A 文章編號 0517-6611（2025）13-0125-10 doi：10.3969/j. issn. 0517-6611. 2025. 13. 024

開放科學(xué)（資源服務(wù)）標(biāo)識碼（OSID）：

Annual Dynamics of PestandNaturalEnemiesinCornFieldinBaosan Cityof YunnanProvinceand ItsEfectonthe Corn Yield ZHAO Guo-an，CHENXing-jan，XIEXian-biaoetal（Plant ProtectionandInspection Stationof Baoshan City，aoshan，Yuan 678000）

AbstractThespecisandpopulationdyamicsofpestsandaturaleemiesoncoplantsindiferentplantingseasonincofedswithand withouthemicalisecticidesplicationinaosanCityYuanProvincefroSeptemer1toSeptember22wereivestigatedthe yieldofcowasmeasuedTheresultssowedthat terewere13speciesofpests icludingSodopterafrugiperda，opalosiphummidison corn，the relative abundance of them were 18.51% ，25. 46% and 19.08% ，81. 13% ，25. 93% and 77.89% on autumn-winter season， spring-summersasonadsummerwinterseasoncoespectivelyecompositioadstructureofestsoncochangedfeteasion of S frugiperda and Paralipsa gularis （（Zeller）in Baoshan corn planting areas，Spodoptera frugiperda and P ·gularis have been the predominant species of pests on corn in Baoshan City. The density of S . frugiperda and R . maidis on corn in spring summer and autumn planting corn ranked as the autumn-winter planting season>summer-autumn season>spring-summer planting season.Among of them， P . gularis was found mainlyonthesummer-autunplantingco，butnonewasfoundonthesprig-summerandautumn-winterplantingco.Tenspecisofnatural enemieswerefoundincluding theladybug，arwig，piders，predatorywasps，Chrysopaperla，tikbgs，Metarhiziumrileyi，Beueria bassiana，ant， Blattaria，the main natural enemies on autumn-winter corn was earwig， M .rileyi and B . bassiana. The predominant species of naturalenemieswereearwig，predatorystinkbugs，spidersonspring-summercon，ladybug，earwigandpredatorystinkbugswerethepre dominantspeciesofnaturalenemiesonsummer-autuncos.Pestsareaniportantfactorafectingcoyield.Comparedwiththeyieldf comfieldscontroledbyhmicalpesticides，teieldsofautumn-wintercosprig-sumecondsumme-autucowihoutcotrol measures were 69. 28% ， 33.49% ，and 28.31% lower respectively than those of corn fields controlled by chemical measures.

KeyWordsCorn;Pest;Natural enemies;Yield loss;Baoshan，Yunnan

玉米是我國最重要的糧食作物之一[1]，是云南省播種面積第一、總產(chǎn)量第二的大田作物，在全省范圍內(nèi)均有種植[2]，也是云南省保山市種植面積和總產(chǎn)均第一的最重要糧食作物，據(jù)2017—2023年農(nóng)業(yè)統(tǒng)計，其常年種植面積為11.83萬 hm2 ，總產(chǎn)78.89萬t。（剩余10962字）