[1]章建新,李劲松.窄行密植对高产春大豆根系生长的影响[J].大豆科学,2007,26(04):500-505.[doi:10.3969/j.issn.1000-9841.2007.04.010]
　ZHANG Jian-xin,LI Jin-song.THE EFFECT OF SOLID SEEDING ON THE GROWTH OF SOYBEAN ROOT IN HIGH YIELD SPRING SOYBEAN[J].Soybean Science,2007,26(04):500-505.[doi:10.3969/j.issn.1000-9841.2007.04.010]
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窄行密植对高产春大豆根系生长的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第26卷 期数: 2007年04期 页码: 500-505 栏目: 出版日期: 2007-08-25
Title:
THE EFFECT OF SOLID SEEDING ON THE GROWTH OF SOYBEAN ROOT IN HIGH YIELD SPRING SOYBEAN
文章编号:
1000-9841(2007)04-0500-06
作者:
章建新; 李劲松
新疆农业大学农学院，乌鲁木齐 830052
Author(s):
ZHANG Jian-xin; LI Jin-song
College of Agronomy,Xinjiang Agricultural University,Urumqi,830052
关键词:
春大豆; 密度; 行株距配置; 根
Keywords:
Spring soybean; Planting density; Spacing form; Root
分类号:
S565.1
DOI:
10.3969/j.issn.1000-9841.2007.04.010
文献标志码:
A
摘要:
大田条件下研究了黑农41在两种密度（45万株/hm2、60万株/hm2）分别在三种行距（20 cm、30 cm、40 cm）下对大豆根系生长的影响。结果表明，在相同行距条件下，高密度明显降低单位面积根系干重，主要是外环（1/4行距-1/2行距）深层根量减少，地上部生长受抑制，根冠比明显增大，根系伤流量和根系还原力明显降低；在相同密度下，合理株行距配置增加单位面积根干重，主要增加外环根量，进而促进地上部生长，降低根冠比，提高根系伤流量和根系还原力；较窄的行距使高密度大豆根系在水平方向分布趋于均匀，并增加外环深层根量。密度对根系生长的影响明显大于株行距配置。产量为5063.90 kg/hm2，R5期根系干重为220.0 g/m2，外环根干重占总根干重19%，20~50 cm深层根干重占总干重32.1%，根冠比0.17；R4期单位面积根系伤流量为15.98 g/m2h。
Abstract:
The effect of two planting densities (45.0×104plants per ha,60.0×104plants per ha) and three row spacing (20 cm，30 cm，40 cm)on the growth of soybean root in Heinong 41 was studied under the field.The results indicated that under the same row spacing,high density could reduce greatly the weight of dried root,mainly of the outer annulus’ deep-seated root,restrain the growth of over ground part,increase obviously root-shoot radio,and reduce greatly bleeding and reduce activity of root.Reasonable row spacing could increase the weight of dried root,mainly of the outer annulus’ deep-seated root,hasten the growth of over ground part,reduce root-shoot ratio,and increase bleeding and reduce activity of root under the same of density.Narrower row spacing could make the root disturbing of high density soybean run to equality,and increase the outer annulus’ deep-seated root.Planting density had more effect than row spacing on the growth of root.When the soybean yield was 5063.90kg/hm2,the weight of dried root was 220.0 g/m2at R5,outer annulus’ root accounted for 19% of its total root,deep root at 20~50 cm accounted for 32.1% of its total root,the root-shoot was 0.17,bleeding was 15.98 g/(m2h) at R4.

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备注/Memo

基金项目：新疆高校科研基金项目（XJEDU2004G07）和新疆科技厅攻关项目（200631104）资助

作者简介：章建新（1962-），男，教授，博士生导师，主要从事作物栽培生理教学和研究工作。

更新日期/Last Update: 2014-10-20