[1]王树起,韩晓增,乔云发,等.低分子量有机酸对大豆根系形态和磷素吸收积累的影响[J].大豆科学,2009,28(02):210-216.[doi:10.11861/j.issn.1000-9841.2009.02.0210]
　WANG Shu-qi,HAN Xiao-zeng,QIAO Yun-fa,et al.Effect of Low Molecular Weight Organic Acids on Root Morphology and Phosphorus Accumulation in Soybean[J].Soybean Science,2009,28(02):210-216.[doi:10.11861/j.issn.1000-9841.2009.02.0210]
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低分子量有机酸对大豆根系形态和磷素吸收积累的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第28卷 期数: 2009年02期 页码: 210-216 栏目: 出版日期: 2009-04-25
Title:
Effect of Low Molecular Weight Organic Acids on Root Morphology and Phosphorus Accumulation in Soybean
文章编号:
1000-9841(2009)02-0210-07
作者:
王树起1; 2; 韩晓增1; 乔云发1; 王守宇1; 严君1; 李晓慧1
1中国科学院东北地理与农业生态研究所，黑龙江 哈尔滨 150081；
2中国科学院沈阳应用生态研究所，辽宁 沈阳 110016
Author(s):
WANG Shu-qi1; 2; HAN Xiao-zeng1; QIAO Yun-fa1; WANG Shou-yu1; YAN Jun1; LI Xiao-hui1
1Northeast Institute of Geography and Agricultural Ecology，Chinese Academy of Sciences，Harbin 150081，Heilongjiang，China；
2Institute of Applied ecology，Chinese Academy of Sciences，Shenyang 110016，Liaoning，China
关键词:
有机酸; 根系形态; 磷积累; 磷效率; 大豆
Keywords:
Low molecular weight organic acids; Root morphology; Phosphorus accumulation; Phosphorus efficiency; Soybean
分类号:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.02.0210
文献标志码:
A
摘要:
采用砂培试验研究了几种低分子量有机酸（柠檬酸、草酸、苹果酸和三种酸的混合）对根系形态和磷素吸收积累的影响。结果表明:不同有机酸处理均显著降低了大豆根系生物量和根冠比，同时使根长、根表面积和根体积均显著降低，而且随着有机酸浓度的增加抑制作用加强，几种有机酸混合后，抑制作用也相对增强，表明不同有机酸处理均抑制了大豆根系的生长，同时使大豆根系的竞争能力降低。几种有机酸处理均降低了大豆对磷素的吸收积累，从而降低了大豆对磷素的吸收效率，但磷利用效率增加。
Abstract:
Most of the farmlands in the world are lack of phosphorus，organic acids exudates from plant root increase under phosphorus deficiency，the plants form several adaptability mechanisms to adapt the phosphorus deficiency environment.In this study，three low molecular weight organic acids(citric acid，oxalic acid，malic acid and their mixture)were selected to study the effect on root morphology and phosphorus accumulation in soybean by sand culture experiment，the results showed that soybean root biomass，root to shoot ratio，root length，root surface area and root volume all significantly decreased under different low molecular organic acids treatments compared with control，and the inhabitation enhanced with the concentration increasing，suggested that the low molecular weight organic acids restrained the growth of soybean，and made the competition of soybean root decreased.Meanwhile the efficiency of phosphorus absorption decreased significantly while the efficiency of phosphorus utilization increased under the low molecular weight organic acids treatment compared with control.

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备注/Memo

基金项目：中国科学院知识创新工程重要方向资助项目（KSCX2-YW-N-002, KZCX2-YW-407）；国家科技支撑计划(2006BAD21B01)资助项目。

作者简介：王树起（1968-），男，副研究员，博士后，主要从事植物营养和土壤生态方面的研究。E-mail:wsq-200131@sohu.com。

更新日期/Last Update: 2014-10-03