[1]王程,刘兵,金剑,等.密度对大豆农艺性状及产量构成因素空间分布特征的影响[J].大豆科学,2008,27(06):936-942.[doi:10.11861/j.issn.1000-9841.2008.06.0936]
　WANG Cheng,LIU Bing,JIN Jian,et al.Influences of Planting Density on Agronomic Traits and Spatial Distribution of Yield Components Across Main Stem in Soybean[J].Soybean Science,2008,27(06):936-942.[doi:10.11861/j.issn.1000-9841.2008.06.0936]
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密度对大豆农艺性状及产量构成因素空间分布特征的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第27卷 期数: 2008年06期 页码: 936-942 栏目: 出版日期: 2008-12-25
Title:
Influences of Planting Density on Agronomic Traits and Spatial Distribution of Yield Components Across Main Stem in Soybean
文章编号:
1000-9841(2008)06-0936-07
作者:
王程1; 2 ; 刘兵2; 金剑2 ; 刘居东2; 张秋英2; 刘晓冰1; 李文滨1; Stephen J.Herbert3
1东北农业大学大豆研究所，黑龙江 哈尔滨 150030；
2中国科学院东北地理与农业生态研究所黑土生态黑龙江省重点实验室，黑龙江 哈尔滨 150081；
3University of Massachusetts，Amherst，MA，01003，USA
Author(s):
WANG Cheng1; 2; LIU Bing2; JIN Jian2; LIU Ju-dong2; ZHANG Qiu-ying2; LIU Xiao-bing2; LI Wen-bin1; S J Herbert3
1 Soybean Research Institute，Northeast Agricultural University，Harbin 150030，Heilongjiang；
2Northeast Institute of Geography and Agroecology，CAS，Harbin 150081，Heilongjiang，China；
3University of Massachusetts，Amherst，MA，01003，USA
关键词:
大豆; 密度; 农艺性状; 产量构成; 空间分布
Keywords:
Soybean; Planting density; Agronomic traits; Yield components; Spatial distribution
分类号:
S565.1
DOI:
10.11861/j.issn.1000-9841.2008.06.0936
文献标志码:
A
摘要:
以3个大豆品种（系）为材料，在田间条件下研究了不同种植密度对大豆农艺性状和单株产量构成因素空间分布特征的影响。结果表明：随密度增加，大豆株高逐渐升高，而主茎节数、基部茎粗及单株茎干重则相对减少。密度对大豆单株产量、荚数和粒数有显著的影响，与中密度相比，低密度分别增加海339、黑农35和垦农18单株产量80.3%、55.4%和12.6%，而高密度则降低海339、黑农35和垦农18单株产量57.4%、24.7%和53.6%。密度对节间每荚粒数和单粒重也有一定影响，但品种间存在差异。3个品种大豆的节间荚数、粒数和粒重的空间分布由上至下呈“微弧型”分布，即中部多，上下部少；而节间每荚粒数和单粒重近似呈现“┃”直线型分布，随着密度的下降，3个品种大豆主茎全部节位的荚数、粒数和粒重均表现出增加趋势，但这种增加在各品种间的上、中和下部节位上存在一些差异。垦农18大豆节间的每荚粒数和单粒重具有很高的稳定性，黑农35稳定性次之，而海339稳定性最弱。因密度的增加而增加的产量与因密度增加而个体受抑导致的减产的数学表达式为：Y n+1 = Y n+ YD－YG。此表达式存在平衡点，此平衡点可作为评价大豆高产群体适宜密度的指标。
Abstract:
Effects of planting densities on agronomic traits and spatial distribution of yield components across the main stem in soybean were investigated in field conditions with three soybean genotypes.Plant height increased with the density increased，while main stem node number，basal node diameter and dry weight of individual stem declined.Planting density had notable influence on pod number，seed number and yield of individual plant.Compared with the medium density，the lower density increased the individual plant yield of H339，HN35，and KN18 by 80.3%，55.4% and 12.6%，seperately;while the higher density deduced the individual plant yield of H339;HN35 and KN18 by 57.4%，24.7% and 53.6%.Planting density had certain influence on seed number per pod and seed weight in each node，and the effect varied among genotypes.The spatial distribution of pod number，seed number and seed weight across the main stem in three genotypes showed the arc shape from top to bottom，i.e.more in middle part and fewer in top or bottom，and the distribution of seed number per pod and single seed weight was almost like “Linear”.With density decreased，pod number,seed number and seed weight in each node all increased in the three genotypes but had some difference in top，medium and bottom layer with different genotypes.The cultivar KN18 had greater stability in the seed number per pod and single seed weight，followed by cultivar HN35，while line H339 was not stable.The mathematics expression with increased yield and inhibited individual yield by increased density was “Y n+1= Y n+ YD－YG”，this expression existed a balance point which could be used as an indicator for estimating suitable density for the high yield population in soybean.

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备注/Memo

基金项目：国家自然科学基金资助项目(30671315)；黑龙江省杰出青年科学基金资助项目(JC200617)；哈尔滨市留学回国基金项目(2005AFL-Y-J-003)资助项目。

作者简介：王程(1983-)，男，硕士研究生，研究方向为作物生理生态学。E-mail：wangcheng1983@vip.163.com。

更新日期/Last Update: 2014-10-04