辽宁盘锦稻田灰飞虱种群动态和空间结构分析

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中图分类号：S435.112+.3文献标志码：A

文章编号：1673-6737（2025）05-0014-04

Analysis of Population Dynamics and Spatial Structure of Laodelphax striatellus （Fall é n） in Rice Fields in Panjin

DAI Ke-tao’，XING Ya-nan²，GUO Li2* （1 Sinochem Modern Agriculture Holdings，Beijing 10oo1o， China; 2 Liaoning Institute of Saline-Alkali Land Utilization，Panjin Liaoning 124O1O，China）

Abstract：ToclarifythepopulationdynamicsandspatialdistributionofLaodelphaxstriatelus （Fallén）inPanjinpaddy fieldsandprovidea basisforitsaccuratepredictionandscientificpreventionandcontrol.Inthisstudy，thefive-point investigationmethodwasadopted，andtheaggregationindexmethodandlinearregressionanalysismethodwereusedto analyzethespatialdistributionpaternofLaodelphaxstriatellus（Fallén）inpaddyfieldsandestablishtheoptimal theoreticalsamplingmodel.TheinvestigationresultsofthisexperimentshowedthatthereweretwopeaksofLaodelphax striatelus（Fallén）populationintheentiregrowth periodofriceinPanjinricearea，namely，thepeaknumberonJuly25 （12individualsperhole）andthepeaknumberon September22（25individualsperhole）Laodelphaxstriatelus（Fall é n） showedanaggegateddistributionthroughoutthegrowthperiod，andtheaggegationdegreeslightlydecreasedwiththe increaseinthenumber.Basedonthe Iwaoregresionequationandthesampling model，theoptimal theoretical sampling modelwasestablished，andthesamplingquantityunderdiferentpestdensitiesanderorlevelswasclarfed，providinga scientificbasisfortheacuratesamplingandefectivepreventionandcontrolofLaodelphaxstriatellus（Fall én）inthe fields of Panjin rice area.

KeyWords：Panjinricearea;Laodelphaxstriatelus（Fall én）；Populationquantitydynamics;Spatialdistribution;Sampling model

水稻作为我国重要粮食作物，年种植面积维持在3000万 hm2 左右，其健康稳产对国家粮食安全至关重要。（剩余4961字）