山东省冬小麦晚播对产量及相关构成因素的影响分析
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中图分类号：S512.1；S318 文献标识码：A DOI编码：10.3969/j.issn.1006—6500.2025.09.003
Abstract：Inordertoexploretheregulatorymechanismofyieldformationundertheconditionofltesowingofwinterwheatandconstructatableyieldtechnicalsystem，thisstudysystematicallanalyzedtheinfluenceofsowingdelayonyieldandyieldcompoents byintegratingmulti-pointfieldtestdataformanyyears，deeplyexploredtheyieldcompensationefectofwaterandfertlizergulationmeasuresonsowingdelayonsowingdelayandscientificallverifiedtheaplicationefectofkeytechnologessuchasplastic filmmulching.TheresultsshowedthatthemoderatedelayofwheatsowingdateinShandongProvincecouldbalancethedeclineof paniclenumberperunitareathrough thecompensatoryefectof grainnumberperspike，andachievedyieldmaintenanceorincrease. WhenthenormalsowingdatewasearlierthanOctober8，moderatelatesowing within1Odayscouldincreasetheyieldandspike number，butlatesowing within1Odaysshowedanegativeefect.However，whenthenormalandlatesowingtimes werelaterhan October18，theoutputandthecomponentsofeach yieldshowedadownwardtrendwiththedelayofsowingdate.Throughthewater andfertilizerotrolmeasuressuchasdenssupplementargaion，fractioaltopdresig，ndducdombidapatioco binedwiththecoaborativeaplicationofplasticfimulcingtechnology，theconradictionbetweentesharpdeereaseofpanicle numberandthedecayofgrainweightcausedbylatesowingcanbesignificantlyaleviated，andtheoptimizationandreorganzationof yieldcomponentscanberealized.Inconclusio，therewasasignificant windowofsensivetresholdandcompensatoryefectforthe yieldformationof winterwheatunderlatesowingconditions，andtheyieldstabilizationmechanismunderlatesowingconditionscan beconstructedbyaccuratelyontrollingtheangeofsuitablesowingdateandsuportingtheimplementationofthecollaboativetech nicalsystemof“waterandfertlizerregulationandplasticfilmmulching".ThisstudyprovidesimporanttechnicalsupportforShandong Province to cope with climate change and the contradiction between stubble connection.
Key words： winter wheat; late sowing; yield; plastic film mulching; compensation effect
冬小麦适宜播种期的地域异质性特征显著，其时空分布格局受品种遗传特性、生态区划指标及气候年型变化的协同调控-。（剩余8361字）
