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ID:31475793
大小:1.22 MB
页数:4页
时间:2019-01-11
《揭膜时间对不同熟性棉花品种影响与研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、中国棉花学会2008年年会论文汇编揭膜时间对不同熟性棉花品种影响的研究王志忠。王树林。林永增,李智峰(河北省农林科学院棉花研究所,石家庄050051)313摘要:选用早熟、中早熟及中熟常规棉花品种为材料,采用裂区设计,研究了不同揭膜时间对不同熟性棉花品种的影响。结果表明,4叶期揭膜和现蕾期揭膜对早熟品种生育进程的影响主要集中在蕾期,对中早熟、中熟品种的影响在蕾期至花铃期;现蕾期揭膜对皮棉产量和纤维品质的影响要大于4叶期揭膜,对产量的影响主要是通过促进结铃性、增加单株铃数,对2.5%跨长、比强度、麦克隆值、整齐度及纺纱均匀性指
2、数等纤维品质指标有正面效应;另外,4叶期揭膜和现蕾期揭膜对中熟品种各种经济性状的影响要大于早熟及中早熟品种。建议生产上种植早熟品种可不盖膜,种植中早熟及中熟品种考虑适时早揭膜,达到既防止早衰、又能充分发挥品种增产潜力之目的。关键词:揭膜时闻;不同熟性;棉花品种;影响TheInfluenceofPlastic-filmRemoving-timeonCottonVarietieswithDif-ferentMaturationPropertyWANGZhi—zhong,WANGShu—lin,LINYong-zeng,LI
3、Zhi—feng(CottonResearchInstitute,HebeiAcademy050051,China)ofAgriculturalandForestrySciences,ShijiazhuangAbstract:Theinfluenceofplastic-filmremoving-timeoncottonvarietieswithdifferentmaturationpropertywasstudiedbysplit—plotdesigntest,inwhichconventionalcottonvari
4、etieswithearlymat—uration,middle-earlymaturationandmiddlematurationpropertywereadopted.Theresultsshowedthatremovingplastic-filmatfour-true-leafstageandsquarestageinfluencesthegrowthofearlymaturationvarietymainlyatsquarestage,whiletheinfluenceonmiddle-early
5、maturationandmid—diematurationvarietiesoccursinsquarestageandbollstage.Theinfluenceonlintyieldandfiberqualityofremovingplastic—filmatsquarestagewasmorethanthatoffour-true-leafstage.Thein—fluenceonlintyieldtakesplacethroughincreasingtherateofbollsetandthebo
6、llsperplant,andtheinfluenceonfiberqualitytakesplacethroughincreasing2.5%spanlength,specificstrength,micronvalue,fiberlengthuniformity,spinningconsistenceindexandotherfiberqualityindex.Inadditiontheinfluenceofremovingplastic-filmatfour-true-leafstageandsquarestageo
7、neconomicalpropertiesofmiddlematurationvarietywasmorethanthatofearlymaturationandearly-middlematurationvarieties.Itissuggestedthatintheproductionpracticeplastic-filmshouldberemovedforearly—middlematurationandmiddlematurationvarietiestopreventearlydecayingandmakeus
8、eoftheyield—increasingpotentialofthevarieties,butforearlymaturationvarietyplasticfilmshouldn7tbeused.Keywords:plastic-filmremo
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