不同棱型大麦品种混种增产效果初探.PDF

中国农学通报 2018,34(33):21-24 Chinese Agricultural Science Bulletin 不同棱型大麦品种混种增产效果初探 赵加涛，刘猛道，杨向红，付正波，字尚永 （保山市农业科学研究所，云南保山678000） 摘 要：为了探索不同棱型大麦品种混种的增产机理及效果，以保山市大面积推广的多棱品种‘保大麦 14号’、二棱品种‘82- 1’为材料，设5 个处理，进行单种和混种比较试验。结果表明，混种能充分利用空 2 间和光能，从而提高产量，产量比单种二棱矮秆品种增加139.5~719 kg/hm ，比单种多棱高秆品种增加 2 40.5~720 kg/hm ；产量构成因素中，混种的有效穗与单种二棱品种（单种中有效穗最多）相近，穗实粒数 比单种二棱矮秆品种增加7.8~ 10.7 粒，千粒重比单种多棱高秆品种增加1.2~5.5 g ，同时，混种还能减轻 倒伏；二棱品种‘82-1’与多棱品种‘保大麦14号’混种基本苗最佳比例为6:4 （折合种子重量≈7:3）。 关键词：不同棱型；大麦；混种；比例；增产效果 中图分类号：S512.3 文献标志码：A 论文编号：cas Yield-increasingEffectbyMixedSowingofDifferentPrismaticBarleyVarieties ZhaoJiatao,LiuMengdao,YangXianghong,FuZhengbo,ZiShangyong (BaoshanInstituteofAgriculturalSciences,BaoshanYunnan678000) Abstract:Toexplorethemechanismandeffectofyieldincreasebymixedsowingofdifferentprismaticbarley varieties,multiprismaticvariety ‘Baodamai 14’anddoubleprismaticvariety ‘82-1’whichhavebeen promotedinlargeareasofBaoshanCity,areusedasmaterials. 5treatmentsaresetupwithsinglesowingand mixedsowing.Theresultsshowedthatmixedsowingsufficientlyutilizedthespaceandlightenergytoincrease theyield,theyieldofmixedsowingincreasedby 139.5-719kg/hm comparedwiththesinglesowingofdouble2 prismaticvariety,andincreasedby40.5-720kg/hm comparedwithsinglesowingofmultiprismaticvariety.In2 yieldcomponents,theeffectivespikes ofmixedsowingweresimilarwiththatofthesinglesowingofdouble prismaticvariety(themaximumeffectivespikesappearedinthesinglesowing).Theactualgrainnumberof spikesincreasedby7.8-10.7comparedwiththesinglesowingofdoubleprismaticvariety. 1000-grainweight increasedby 1.2-5.5gcomparedwithsinglesowingofmultiprismaticvariety.Mo