converse pas cher Combination against three insect

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Combination against three insect pests of rice and grain growth of

~ IangsuAgricul, u, alColleg * Ya. gzhou225000AbstraetAccordingtothecharacteristicsofoccurrencesofthethreeinsect mouth estsSogatellalurciiera. Cnaphalocrocirmedinalis, NilaparvatalugensinJianghuaricedistrict. theircombinedinfestationsandeffectsongraingrowthofricewerestudledinpaddyfieldandcementpoolwithcagebyrandomplotdesignofcompletecombinationin1991 a l992. Weightsofthestronggrainandtheweakgramweredetermi Ⅱ edonceeveryfourdaysfromheadingtoharvesting. ThegrowthequationtW a - wasusedtodescribethegraingrowthprocessofeachtreatment · 1e-Fromfirst. secondandthirdorderderivativesoftheequation,[link widoczny dla zalogowanych], someparameterswerederivedasfollows: a curse, first-class,[link widoczny dla zalogowanych], one by one for a Gr ... · (t a, R0 a wherel-turningpointofgrowthcurve ... V-maximumgrowthrate,[link widoczny dla zalogowanych], dr = activegrowthstage. (graingrowthbecomesslowbeforeIandafter2), GT-cumulativeweight0fdrledcontentinactivegrowthstagetandRo-initialgrowthpower · Effects0fcombinedinfestationofthepestsonthestrongandtheweakgramgrowthwereanalysedhytheseparameters.Theresultsofanalysisofvarianceshowedthatlate · f3ctioneffectswerealsosignificantinadditiontothemaineffectsofthecombinedinfestations0nvieldwhichweresignificant. Thisindicatedthatthecombinedinfes-tationsofthepestscausedeconomicdamageeventhoughdensityofeachspeciesWaSbeloweconomicthreshold.ValuesofV ...,[link widoczny dla zalogowanych], GTandKdecreasedastheinfestat-tionsaggravated.Moreover. theresultofanalysisalsoshowedtheeffectoftheinfestationontheweakgrainbeinggreaterthanthatonthestronggrain · Keywords $ ogatellalureiiera, Cnaphalocrocismedinalis · Nilaparvatolugens, Gom-binedinfestation,[link widoczny dla zalogowanych], graingrowth
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