| 低分子量有机酸对大豆根系形态和磷素吸收积累的影响 |
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| 引用本文： | 王树起,韩晓增,乔云发,王守宇,严君,李晓慧.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(2). |
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| 作者姓名： | 王树起 韩晓增 乔云发 王守宇 严君 李晓慧 |
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| 作者单位： | 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;中国科学院沈阳应用生态研究所,辽宁,沈阳110016
2. 中国科学院东北地理与农业生态研究所,黑龙江,哈尔滨,150081 |
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| 基金项目： | 中国科学院知识创新工程重要方向性项目，国家科技支撑计划 |
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| 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.
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| 关 键 词： | 有机酸 根系形态 磷积累 磷效率 大豆 |
Effect of Low Molecular Weight Organic Acids on Root Morphology and Phosphorus Accumulation in Soybean |
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| WANG Shu-qi,HAN Xiao-zeng,QIAO Yun-fa,WANG Shou-yu,YAN Jun,LI Xiao-hui.Effect of Low Molecular Weight Organic Acids on Root Morphology and Phosphorus Accumulation in Soybean[J].Soybean Science,2009,28(2). |
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| Authors: | WANG Shu-qi HAN Xiao-zeng QIAO Yun-fa WANG Shou-yu YAN Jun LI Xiao-hui |
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| Institution: | WANG Shu-qi1,2,HAN Xiao-zeng1,QIAO Yun-fa1,WANG Shou-yu1,YAN Jun1,LI Xiao-hui1(1Northeast Institute of Geography , Agricultural Ecology,Chinese Academy of Sciences,Harbin 150081,Heilongjiang,China,2Institute of Applied ecology,Shenyang 110016,Liaoning,China) |
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| 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 sho... |
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| Keywords: | Low molecular weight organic acids Root morphology Phosphorus accumulation Phosphorus efficiency Soybean |
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