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时间:2019-03-08
《稀植留营养枝对杂交棉豫杂35 通风透光特性及产量品质的影响》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、浙江农业学报ActaAgriculturaeZhejiangensis1(82):94~98,2006稀植留营养枝对杂交棉豫杂35通风透光特性及产量品质的影响马宗斌1,李伶俐1,房卫平2,谢德意2,张东林3(1河南农业大学农学院,河南郑州450002;2河南省农业科学院棉花油料作物研究所,河南郑州450002;3河南省开封县棉花办公室,河南开封475100)摘要:在高产栽培条件下,研究了稀植、留营养枝对杂交棉豫杂35通风透光特性和产量品质的影响。结果表明:1.8万株/hm2并留3个强势营养枝,2.1万株/hm2并留2个强势营养枝和2.4万株/hm2并留2个强势营养
2、枝比1.5万株/hm2并留3个强势营养枝的棉花,群体叶面积动态及中下部透光合理,干物质积累多,群体开花量大,单位面积结铃数显著增加,皮棉产量增加9.5%~10.5%,达到显著水平。而在1.8~2.4万株/hm2密度范围内,棉花产量差异不显著。说明在高产条件下,杂交棉豫杂35密度弹性大,密度可由目前的(2.25~3.00)万株/hm2降低到1.80万株/hm2。关键词:稀植;营养枝;通风透光;棉花;产量;纤维品质中图分类号:S562文献标识码:A文章编号:1004-152(42006)02-0094-05Effectsoflowdensityandretaining
3、monopodiumsonventilationandpenetratinglight,andyieldandqualityofhybridcottonYuza351,LILing-li1,FANGWei-ping2,XIEDe-yi2,ZHANGDong-lin3MAZong-bin(1CollegeofAgronomy,HenanAgriculturalUniversity,Zhengzhou450002,China;2CottonandOilCropResearchInstitute,HenanAcademyofAgriculturalSciences,Zh
4、engzhou450002,China;3KaifongCountyCottonProductionOffice,Kaifong,457100,China)Abstract:Effectsoflowdensityandretainingmonopodiumonventilationandpenetratinglight,andyieldandqualityofhy-bridcottonYuza35wasstudiedunderhighyieldcultivationconditions.Theresultsshowedthatcomparingwiththetre
5、at-mentofpopulationof1.5×104plants/hm2andretaining3monopodiums/plant,thetreatmentsofpopulationof1.8×104plants/hm2andretaining3monopodiums/plant,2.1×104plantshm2andretaining2monopodiums/plant,and2.4×104plants/hm2andretaining2monopodiums/planthadmorereasonableLAIandgoodpenetratinglightu
6、nderthemiddle-lowerpartoftheplants,accumulatedmoredrymatterhadmoreflowersandbolls,andincreasedlintyieldby9.5%-10.5%(P<0.05).However,nosignificantdifferenceswasfoundbetweentheyieldsofthetreatmentswithdensity1.8×104-2.4×104plants/hm2.ItindicatedthatthedensityofhybridcottonYuza35hadbroad
7、flexibilityunderhighyieldculti-vationconditions,anditsplatingdensitycouldbedecreasedfrom(3.00-2.25)×104plants/hm2to1.80×104plants/hm2.Keywords:lowdensity;monopodium;ventilationandpenetratinglight;cotton;yield;fibrequality近年来,随着杂交棉强势新品种的相继育成,我国杂交棉的种植面积逐年扩大,显著地提收稿日期:2005-07-15高了棉花产量水平[1
8、~3]。杂
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