玉米不同密度下苗期分蘖处理对农艺性状和产量的影响  

Influence of Tillers Treatment under Different Planting Densities on Maize Agronomic Traits and Yield at Seedling Stage

作　　者：李妍妍[1] 张喆 丰光[1] 王亮[1] 景希强[1,2] 

机构地区：[1]丹东农业科学院,辽宁凤城118109 [2]辽宁丹玉种业科技股份有限公司,辽宁凤城118109

出　　处：《玉米科学》2015年第5期107-111,共5页Journal of Maize Sciences

基　　金：辽宁省农业领域青年科技创新人才培养计划(2014009);国家科技支撑计划农作物新品种规模化制种关键技术研究与产业化(2011BAD35B08)

摘　　要：试验选取当前主栽的玉米杂交种先玉335、丹玉801和丹玉336为材料,采用裂区试验设计,研究不同密度下分蘖处理对品种根系、株高、穗位高和产量的影响。结果表明,随种植密度增加,分蘖数量逐渐减少,苗期分蘖对根系的生长具有一定促进作用,掰除分蘖能够提升玉米株高和穗位高,特别是对玉米苗期株高提升明显,同密度下是否掰除分蘖产量差异不显著。苗期保留分蘖对玉米生长发育和产量影响不大。Three maize hybrids Xianyu335, Danyu801 and Danyu336 that widely cultivated on maize produc-tion were chose as the materials. The effects of tillers treatment with different densities by split plot design on root,plant height, ear height and yield were studied. The results indicated that tiller numbers reduced gradually with theincrease of density, seedling tillers had certain promoting effect on root growth, tillers treatment could increase plantand ear height, especially to seedling plant height, the effects of tillers treatment on yields were not significant in thesame density. So, the effect of tillers treatment on maize growth and yield at seedling stage was not obviously.

关 键 词：玉米 分蘖 农艺性状 产量 

分 类 号：S513.047[农业科学—作物学]