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时间:2018-04-15
《滴灌春小麦群体质量与产量的关系》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、麦类作物学报2014,34(5):655-661JournalofTriticeaeCropsdoi:10.7606/j.issn.1009-1041.2014.05.13网络出版时间:2014-5-12网络出版地址:http://www.cnki.net/kcms/doi/10.7606/j.issn.1009-1041.2014.05.13.html滴灌春小麦群体质量与产量的关系彭婷,蒋桂英,段瑞萍,张前前,李劲松,冉辉(石河子大学农学院,新疆石河子832003)摘要:为探讨滴灌春小麦的高产机理,以新春6号为材料
2、,分析了不同水肥条件下滴灌春小麦群体质量及其与产量的关系。结果表明,滴灌春小麦的茎蘖成穗率、粒叶比及花后干物质对产量的贡献率与产量均呈极显著正相关,孕穗期LAI与产量呈二次抛物线的关系;在拔节期滴灌春小麦的群体茎蘖数量为775.2×4·hm-2、茎蘖成穗率为88.7%、孕穗期和籽粒形成期的LAI分别为7.83和6.22、粒数叶比和粒重叶比分10别为4314.4粒·m-2和224.3g·m-2、花后干物质积累量为7001.95kg·hm-2、花后干物质贡献率为-2)。说明通过提高茎蘖成穗率,保持适宜孕穗期群体叶面积和提
3、高79.14%时,产量最高(10967.4kg·hm粒叶比,促进花后物质生产和贮存物运转,协调源库关系,可以实现滴灌春小麦高产。关键词:滴灌;春小麦;群体质量;产量中图分类号:S512.1;S275.6文献标识码:A文章编号:1009-1041(2014)05-0655-07RelationshipsbetweenPopulationQualityandYieldofDrip-irrigatedSpringWheatPENGTing,JIANGGuiying,DUANRuiping,ZHANGQianqian,LIJ
4、insong,RANHui(CollegeofAgricultural,ShiheziUniversity,Shihezi,Xinjiang832003,China)Abstract:Inordertoinvestigatetherelationshipbetweenpopulationqualityindicesandyieldindrip-irrigatedspringwheatandtounderstanditshighproductioncultivationmechanism,theexperimentwa
5、sconductedwithwheatvariety,Xinchun6,underdifferentwaterandfertilizertreatments.There-sultsindicatedthatasignificantandpositivecorrelationwasfoundbetweentheear-bearingtillerrate,grainnumber-leafratio,drymattercontributionproportionafteranthesiswithwheatyieldford
6、rip-pingspringwheat.TheLAIhadaquadraticparabolarelationshipwiththeyield.Atjointingstage,4·hm-2,ear-bearingtillerratewas88.7%,andtheleafthepopulationculmnumberwere775.2×10areaindexatthebootingstageandgrainfillingperiodwas7.83and6.22,respectively.Grainnum--2-2,re
7、-ber-leafarearatioandGrainweight-leafarearatiowas4314.4grains·mand224.3g·mspectively;drymatteraccumulationanddrymattercontributionproportionafteranthesiswas-2-27001.95kg·hmand79.14%,respectively;,theyieldcouldbeashighas10967.4kg·hm.Consequently,highyieldcouldbe
8、gainedbyimprovingtheear-bearingtillerrate,controllingthepop-ulationLAIatbootingstage,promotingthedrymatterproductionandstoragetranslocationafteran-thesis,coordinatingtherela
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