种植密度对安豆8号主要农艺性状、经济性状及产量的影响*何大智，王涛，卢平，朱江，陈维，曹家洪**（安顺市农业科学院，贵州安顺562100）摘要：为探索生产中安豆8号最适种植密度，试验采用随机区组设计，设置5个种植密度：21、24、27、30、33万株/hm2，研究不同种植密度对安豆8号主要农艺性状、经济性状及产量的影响。结果表明，随着种植密度增加，安豆8号的株高和底荚高度均呈增加趋势；有效分枝数、总分枝数、生育日数、单株荚数、单株粒数、单株粒重、百粒重呈减少趋势；主茎节数呈先减后增趋势，各处理间差异不显著；有效荚数及产量呈先增后减趋势。当安豆8号种植密度为27万株/hm2时产量最高，为2918.1kg/hm2，该种植密度为其生产适宜密度。关键词：安豆8号；种植密度；农艺性状；经济性状；产量中图分类号：S565.1文献标识码：A文章编号：1674-3547(2023)01-0021-05收稿日期：2022-11-15；修回日期：2022-11-24第一作者：何大智，男，农艺师，研究方向为作物栽培技术，E-mail:1213694641@qq.com*基金项目：贵州省大豆良种攻关项目（黔财农〔2022〕45号）**通讯作者：曹家洪，男，高级农艺师，研究方向为作物新品种选育与成果转化，E-mail：jqcjh1965@163.com研究与探讨21□EffectsofPlantingDensityontheMainAgronomic,EconomicCharactersandYieldofAndou8HeDazhi,WangTao,LuPing,ZhuJiang,ChenWei,CaoJiahong（AnshunAcademyofAgriculturalSciences,Anshun562100,Guizhou,China）Abstract:InordertoexploretheoptimalplantingdensityofAndou8inproduction,arandomblockdesignwasadoptedintheexperiment,andfiveplantingdensitiesweresetup:210000,240000,270000,300000,330000plants/hm2,tostudytheeffectsofdifferentplantingdensityonthemainagronomiccharacters,economiccharactersandyieldofAndou8.Theresultsshowedthatplantheightandbottompodheightincreasedwiththeincreaseofplantingdensity,thenumberofeffectivebranches,totalbranches,growthdays,podsperplant,grainsperplant,grainweightperplantand100-grainweightshowedadecreasingtrend.Thenumberofnodesdecreasedfirstandthenincreased,butthedifferencewasnotsignificant.Thenumberofeffectivepodsandyieldincreasedfirstandthendecreased.WhentheplantingdensityofAndou8was270000plants/m2,theyieldwas2918.1kg/hm2,andtheplantingdensitywassuitableforitsproduction.Ke...
