4、,ChinaMeteorologicalAdministration,Urumqi830002,China;2PlantProtectionStationofShawanCountry,Shawan832100)Abstract:TorevealtheeffectofpreventionandcontrollingHelicoverpaarmigerabyphysicalmethodsinXinjiangregion,thefieldexperimentofscouringbydifferentrainfallintensitya
5、ndlabexperimentofcoveringbydifferentsoilwasconducted.Theresultsshowedthatscouringrateincreasedwithintensityofrainfall.Theeggscouldntbehatchediftheywerecompletelycoveredbymud.However,itcouldbehatchediftheywerehalfcovered,evensametowithoutcoveredbymud.Hatchingratehadlowc
6、orrelativitytosoilmoisture.Itwasdifficulttokilltheeggsbyrainfall.SoitwasnotpracticethatcontrollingHelicoverpaarmigerajustbyrainfallinXinjiangregion.Keywords:EggsofHelicoverpaarmigera;Rainfallintensity;Soilmoisture;HatchingrateCD?o(Helicoverpaarmigera)_ü?S'3CD?aBSh¤l_LH,
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