叶面肥对小贯小绿叶蝉empoasca(matsumurasca)onukii种群数量的影响

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1、叶面肥对小贯小绿叶蝉Empoasca(Matsumurasca)onukii种群数量的影响雒焕蓉冉隆贵秦道正北农林科技大学农学院筛选可减轻小贯小绿叶蝉为害的叶面肥，旨在为茶树主要害虫的无公害治理提供依据。采用扫网法在小贯小绿叶蝉发生高峰期调查田间喷施3种不同体积分数叶而肥前、后小贯小绿叶蝉成虫和若虫的数量。结果表明，喷施叶绿素20.0%、10.0%、4.1%后第3天小贯小绿叶蝉成虫数量显著低于对照，第7天时极显著低于对照。喷施荼丰素8.3%、4.2%后第7天成虫数量极显著低于对照。喷施天达211610.0%、4

2、.1%及茶丰素33.3%后7d内成虫数量与对照差异不显著。喷施叶绿素20.0%、10.0%、4.1%后7d内小贯小绿叶蝉若虫数量与对照差异不显著，但从第3天开始极显著低于茶丰素33.3%;喷施天达211610.0%、4.1%及茶丰素8.3%、4.2%后7d内若虫数量与对照差异不显著。进一步分析发现叶绿素20.0%、10.0%、4.1%对小贯小绿叶蝉种群数量的影响差异不显著，但显著低于清水处理。综合考虑成本及经济效益，建议在陕西茶区使用叶面肥吋优先选用4.1%叶绿素,在提高茶叶产量和品质的同时达到减轻小贯小绿叶蝉

3、危害的目的。关键词：荼树;叶面肥;小贯小绿叶蝉;种群数量;E-mai1:960917401@qq.E-mai1:qindaozh@nwsuaf.edu.基金:国家自然科学基金(31270689)EffectofFoliarFertilizationonPopulationFluctuationofEmpoasca(Matsumurasca)onukiiMatsudaLUOHuanrongRANLongguiQINDaozhengCollegeofPlantProtection，NorthwestA&FUnive

4、rsity;CollegeofAgriculture，NorthwestA&FUniversity;Abstract：TheexperimentwasconductedtoselectfoliarfertilizerwhichcanreducepopulationquantityofEmpoasca(M.)onukii,toprovidetheoreticalreferenceforenvironmental-friendlymanagementofteapest.Thefieldpopulationfluct

5、uationofEmpoasca(M.)onukiibeforeandaftersprayingInvestec,tearichfertilizerandLeafgreenfertilizerwasinvestigatedonteaplantbysweepingmethodatEmpoasca(M.)onukiioccurrencepeak.Theresultsshowedthatonthethirddayafterspraying20.0%,10.0%,and4.1%LeafGreenFertilizer,t

6、headultpopulationquantityofEmpoasca(M.)onukiiwassignificantlylessthanCK,ontheseventhdaysignificantlylowerthanCK,whichmeanttheuseofLeafGreenFertilizerinhibitedtheadultpopulationofEmpoasca(M.)onukii.TheadultpopulationwassignificantlylowerthanCKontheseventhdaya

7、fterusing8.3%and4.2%TeaRichFertilizer;orhadnotsignificantdifferencecomparedwithCKafterusing10.0%and4.1%Investec2116and33.3%TeaRichFertilizerwithinsevendays,whichmeantthesetwofertilizerscouldnotinhibittheadultpopulationquantityofthepest.ThenymphpopulationofEm

8、poasca(M.)onukiihadindistinctiveeffectafterusing20.0%，10.0%,and4.1%LeafGreenFertilizercomparedwithCKwithinsevendays,butsignificantlylowerthan33.3%TeaRichFertilizerfromthethirdday;withinsevendays