不同播期对玉米干物质积累的影响及分析

22420048()JournalofShiheziUniversity(NaturalScience)Vol.22No.4Aug.2004:10077383(2004)04028504,,,(,832003):,,,,,;,2YD22SC704YD22,YD22:;;;:S513.01:A,,,,,,,,111,20014~9SC70422,410425525,18,75000hm2,66cm,19.8cm15,0.013hm2,10,0.13hm2,,,(:100kgN3.6kgP2051.5kgK203.5kg),125d,10d1,,,51.2.11.2.2,1050.5h,80,1.2.3221(),410425525,:1,23,YD22SC704,:20030311:(200315):(1964),,,,,:09932368721,09932057998;email:[e-mail]80d,3,,,YD22(12)1410242552534105252290%~95%,,2.2.1,,,(1)1410525g410YD225.2947.6960.3376.6663.87SC7042.0061.4174.5893.9085.35525YD227.9764.5579.5454.9545.77SC70418.1030.7046.0791.9641.221,,410YD2276.66g,SC70493.9g,510YD2279.54g,SC70491.96g,,232.2.2,,,(2)2410525g410YD2217.5750.7752.0652.7346.61SC70419.2752.2450.3447.7545.44525YD2229.6343.1947.8546.6441.22SC70436.8739.6341.7144.6742.522,,410YD2252.73g,SC70450.34g,525YD2247.85g,SC70444.67g4,SC704YD22286()221:;2:;3:;4:;5:44105254,,410525,;,YD22SC704,,SC704,YD22,YD22SC704,;,YD22,YD223,:,,,,,,,,:,;,,,,:,,,,,,,,:[1].[J].,1987,(4),2719.[2],,,.[J].1997,23(6)727733.[3].[J].,1997,(3)153165.[4].[J].,1988,(3)1215.[5],,,.[J].,1998,19(4)912.[6],.[J].,1994,15(1)122126.[7].[J].,1981,(2)1724.[8].[J].,1984,(7)310.2874,:AnalysisonEffectofEcologicalFactorsonMaizeDryWeightAccumulationinDifferentSowingPeriodsLXin,BAIPing,ZHANGWei,ZHUYu(KeyLaboratoryofOasisEcologyAgricultureofXinjiangBINGTUAN,ShiheziUniversity,Shihezi,Xinjiang832003,China)Abstract:Itisbeneficialtodryweightaccumulationformaizeinearlysowing.Itsetsgoodfoundationofdryweightforincreasinginlaterperiodandthehighspeedaccumulationforalongtime.Thedurationofearlysowingmaizedryweightaccumulationismoderate;theaccumulativespeedisquickandcanmaintainforalongtime.Thecauseisthatsunlight,temperatureandwatercancoordinateintimeandspaceofthemaizegroupverywell.Withthedelayofseedingtime,dryweightaccumulationgraduallydecreases.Atdifferentseedingtime,thevarietyYD22sdryweightaccumulationismorethanSC704.ThissuggeststhatYD22hasbiggerproductionpotentiality.Keywords:maize;dateofgrowth;ecologicalfactors;dryweightaccumulation288()22