[1]金 　剑,王光华 　刘晓冰 　陈雪丽 　李兴国.不同施磷量对大豆苗期根系形态性状的影响*[J].大豆科学,2006,25(04):360-364.[doi:10.11861/j.issn.1000-9841.2006.04.0360]
　Jin Jian Wang Guanghua Liu XiaobingChen Xueli Li Xingguo.EFFECT OF DIFFERENT PHOSPHORUS REGIMES ON ROOT MORPHOLOGICALCHARACTERISTICS OF SOYBEAN SEEDLING[J].Soybean Science,2006,25(04):360-364.[doi:10.11861/j.issn.1000-9841.2006.04.0360]
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不同施磷量对大豆苗期根系形态性状的影响*

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第25卷 期数: 2006年04期 页码: 360-364 栏目: 出版日期: 2006-11-25
Title:
EFFECT OF DIFFERENT PHOSPHORUS REGIMES ON ROOT MORPHOLOGICALCHARACTERISTICS OF SOYBEAN SEEDLING
作者:
金 　剑 1;  2 　王光华 1 　刘晓冰 1 　陈雪丽 1 　李兴国 3
(1. 中国科学院东北地理与农业生态研究所黑土重点实验室 ,哈尔滨, 150040;2. 中国科学院研究生院,北京,100039;3. 东北农业大学, 哈尔滨,150030)
Author(s):
Jin Jian 1; 2 　Wang Guanghua 1Liu Xiaobing1　Chen Xueli 1Li Xingguo 3
(1. Key lab of black soil , Northeast Institute of Geography and Agro-ecology , Chinese Academyof Science , Harbin 150081;2. Graduate School of the Chinese Academy of Sciences ,Beijing 100039;3. Northeast Agricultural university , Harbin 153000)
关键词:
关键词　大豆; 磷; 根系形态
Keywords:
Soybean; Phosphorus ; Root morphology
DOI:
10.11861/j.issn.1000-9841.2006.04.0360
文献标志码:
A
摘要:
摘要 　通过盆栽试验 ,对不同磷施用量条件下的大豆根系形态进行研究。结果表明 ,磷显著增加根系干重、根长、根表面积和根体积, 在低磷 P50(50 mg /kg)处理下 ,根干重、根长 、根表面积和根体积分别比 P0(0 mg /kg)处理增加 88. 0 %、97. 1%、101. 7%和 104. 9%。适量的磷可促进根系的生长,增大根系在土壤中的养分吸收空间 。磷对大豆根系形态性状的影响主要表现在根量及根长的增加上,而与不同粗细的根系分布比例关系不大。在不同施磷处理间 ,高磷 P 1 00(100 mg /kg)处理的根系性状弱于低磷 P50 处理。磷对根系的促生长作用是有一定范围的,过高的磷不但不会进一步改善根系性状 ,反而对其生长产生抑制作用 。
Abstract:
The response of soybean root morphology to different phosphorus regimes was researched bya pot experiment. The results showed that phosphorus significantly increased root dry weight , rootlength , root surface area and root volume. In the treatment of low phosphorus, i. e. P50(50 mg /kg), rootdry weight , root length, root surface area and root volume were 88. 0%, 97. 1%, 101. 7% and 104. 9%higher than P0 (0 mg /kg)treatment. This indicated that suitable phosphorus may accelerate root grow thresulting in root exploring more soil space for nutrient absorption. The variation of root morphology byphosphorus was root mass and root length, rather than root percentage at different ranges of root diame-ters. The root morphology in P 1 00(100 mg /kg)treatment was worse than that in P50 treatment , sugges-ting that there was a threshold for phosphorus application to stimulate root growth, therefore , too muchphosphorus may limit root growth but enhance it as expect.

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备注/Memo

基金项目:哈尔滨市青年科学基金项目(2005AFQ - Y - J - 011);国家自然科学基金项目(40541004);中国科学院知识创新项目(KZCX3 - SW - NA - 04)。

作者简介:金剑 (1974- ), 男, 副研究员, 在读博士, 主要从事作物生理生态研究。

更新日期/Last Update: 2016-12-16