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《棉乡杂3号产量构成因素分析及高产栽培措施.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第42卷第4期河南科技学院学报2014年8月Vo1.42No.4JournalofHenanInstituteofScienceandTechnologyAug.2014doi:10.3969~.issn.1008-7516.2014.04.003棉乡杂3号产量构成因素分析及古同栽培措施孙长法,田土星,陈荣江,段芳芳(1.新乡市锦科棉花研究所,河南新乡453731;2.河南科技学院,河南新乡453003)摘要:探讨棉乡杂3号的产量构成因素间的相互关系及其对产量的影响效应,为制定该品种的高产栽培措施提供依据.2a试验结果表
2、明:铃重、衣分的变异较小,它们主要受遗传基因控制,株铃数、公顷铃数有较大变异,表明它们易受环境因素影响;衣分、铃重和公顷铃数均与皮棉产量呈极显著或显著正相关,对皮棉产量的最终效应为:衣分(0.6411)>铃重(0.4668)>公顷铃数(0.4490),贡献率相应为49.49%、26.24%、24.27%,以衣分为最大,铃重和公顷铃数分列第2、3位.模拟得出皮棉产量1650~1800kg/hm的优化结构:公顷铃数784608-803030个,铃重6.12-6.20衣分41.43%%~41.66%.在高产栽培实践中,以争株铃
3、、增总铃、促铃重、稳衣分为主攻方向,加强管理,促成各因素协调发展,方能实现高产目标.关键词:棉乡杂3号;产量因素;高产栽培;模拟产量结构;回归分析;通径分析中图分类号:$562文献标志码:A文章编号:1008—7516(2014)04—001l一05Yieldcomponentsanalysisandhigh-yieldcultivationmeasuresforMianxiangza3SunChangfa,TianTuxing,ChenRon~iang2,DuanFangfang(1.XinxiangJinkeCott
4、onResearchInstitute,Xinxiang453731,China;2.HenanInstituteofScienceandTechnology,Xinxiang453003,China)Abstract:Inordertoprovideevidenceforhigh—yieldcultivationmeasuresoftheMianxiangza3,theyieldcomponentsrelationshipanditseffectonproductionwerestudiedinthispaper.Tw
5、oyearstestresuhsshowedthatthesmailervariationofbollweightandlint,theyweremainlycontrolledbygeneticinheritance.Plantbollnumberandhectarebollnumberhadlargervariation,whichrevealedthattheywereeasilyaffectedbyenvironmentalfactors;Lint,bollweightandhectarebollnumberwe
6、reverysignificantorsignificantpositivecorrelationwithlintyields.Itsfinaleffectonlintyiehtfollows:lint(0.6411)>bollweight(0.4668)>hectarebellnumber(0.4490).Thecorrespondingcontributi0nrateswere49.49%。26.24%,and24.27%.Thelintreachedtothem~imum,bollweightandthehecta
7、rebollnumberrankin2,3respectively.Optimizationstructureoflintyield1650-1800khmthroughsimulationaslistsbelow:hectarebollnumbers784608~803030,thebollweight6.12-6.20g,lint41.43%-41.66%.Duringthehigh—yieldcultivationpractice.theresearchersshouldtakestrivingforplantbo
8、ll,increasingthetotalbollnumbers,promotingthebollweightandstabilizinglintasthemaindirection,strengthenmanagement,andcontributetothecoordinateddevelopmentofvari
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