旱后复水条件下磷添加对白羊草根系形态及氮磷累积的影响

康继月; 王世琪; 刘金彪; 李敏; 王智; 徐炳成

doi:10.13870/j.cnki.stbcxb.2019.06.038

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旱后复水条件下磷添加对白羊草根系形态及氮磷累积的影响

更新时间：2025-03-12

- 旱后复水条件下磷添加对白羊草根系形态及氮磷累积的影响
- Effects of Phosphorus Addition on Root Morphology, Nitrogen and Phosphorus Accumulation of Old World Bluestems Under Re-watering After Drought
- 水土保持学报 2019年33卷第6期页码：273-279
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  2. 中国科学院大学,北京,100049
  3. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
  
  [ "康继月(1993-),女,硕士研究生,主要从事水土保持植被研究。E-mail:jiyuekang@163.com" ]
- 基金信息：
  
  国家自然科学基金项目（41371509，41771553）
- DOI：10.13870/j.cnki.stbcxb.2019.06.038
  中图分类号：
- 纸质出版：2019
- 稿件说明：
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康继月, 王世琪, 刘金彪, 等. 旱后复水条件下磷添加对白羊草根系形态及氮磷累积的影响[J]. 水土保持学报, 2019,33(6):273-279.

KANG Jiyue, WANG Shiqi, LIU Jinbiao, et al. Effects of Phosphorus Addition on Root Morphology, Nitrogen and Phosphorus Accumulation of Old World Bluestems Under Re-watering After Drought[J]. 2019, 33(6): 273-279.
康继月, 王世琪, 刘金彪, 等. 旱后复水条件下磷添加对白羊草根系形态及氮磷累积的影响[J]. 水土保持学报, 2019,33(6):273-279. DOI： 10.13870/j.cnki.stbcxb.2019.06.038.

KANG Jiyue, WANG Shiqi, LIU Jinbiao, et al. Effects of Phosphorus Addition on Root Morphology, Nitrogen and Phosphorus Accumulation of Old World Bluestems Under Re-watering After Drought[J]. 2019, 33(6): 273-279. DOI： 10.13870/j.cnki.stbcxb.2019.06.038.

摘要

植物生长及养分利用特征可揭示半干旱区植物对多变水肥环境条件的适应策略。在白羊草分蘖期设置2个供水条件（正常供水和干旱胁迫21天后复水）和2个磷添加水平（复水当日1 kg干土添加0，0.2 g P2O5），2周后测定其根冠生物量、根系形态以及氮磷含量。结果表明，旱后复水条件下，磷添加后白羊草根冠生物量、总生物量和根冠比无显著变化，总根长和根表面积显著增加27.1%和24.1%，比根长和比根面积分别显著增加18.3%和15.9%，根系平均直径显著降低1.3%；白羊草地上部、根系和整株磷含量分别显著增加61.1%，35.8%和49.6%，磷累积量分别显著增加68.6%，52.0%和61.3%，氮磷比显著降低。除地上部氮累积量外，各水分和磷处理下白羊草地上部、根系和整株氮磷累积量与总根长和根表面积呈显著正相关关系。本研究表明，根长和根表面积增加是白羊草响应水肥环境条件改善的主要策略。

Abstract

To identify the adaptation strategies of plants in semi-arid areas to periodical changes of water and nutrient supply

a pot experiment was conducted to investigate plant growth

root morphological characteristics

N and P concentration under two soil moisture conditions (well-watered and post-drought rehydration) and two phosphorus (P) addition levels (0 and 0.2 g P2O5 per kg dry soil) of Old World bluestems at its jointing stage. Results showed that under re-watering after drought

effect of P addition on shoot and root biomass

total biomass

and root/shoot ratio of Old World bluestems have no significant difference

while total root length and root surface area increase 27.1% and 24.1%

specific root length and specific root area increase 18.3% and 15.9%

and root average diameter decrease 1.3%. P concentration in shoot

root and whole plant of Old World bluestems significantly increased 61.1%

35.8% and 49.6%

respectively

and P accumulation significantly increased 68.6%

52.0% and 61.3%

respectively

and

N:P ratio decreased significantly. In addition to N accumulation in shoot

N and P accumulation in shoot

root

and whole plant of Old World bluestems under different water and phosphorus treatments showed significant positive correlation with total root length and root surface area. The present study suggested that increases in root length and root surface area were the main adaptation strategies of Old World bluestems in response to periodical changes of water supply and phosphorus addition.

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references

山仑,陈国良.黄土高原旱地农业的理论与实践[M].北京:科学出版社,1993.

Wang Z, Xu W Z, Chen Z F, et al. Soil moisture availability at early growth stages strongly affected root growth of

Bothriochloa ischaemum

when mixed with

Lespedeza davurica

.Frontiers in Plant Science,2018,9:1050-1060.

Waddell H A, Simpson R, Ryan M, et al. Root morphology and its contribution to a large root system for phosphorus uptake by

Rytidosperma

species (wallaby grass)[J].Plant and Soil,2017,412(1/2):7-19.

Zhou G Y, Zhou X H, Nie Y Y, et al. Drought-induced changes in root biomass largely result from altered root morphological traits:Evidence from a synthesis of global field trials[J].Plant Cell and Environment,2018,41(11):1-11.

Suriyagoda L D B, Ryan M H, Renton M, et al. Plant responses to limited moisture and phosphorus availability:A meta-analysis[J].Advances in Agronomy,2014,124:143-200.

安卓,牛得草,文海燕,等.氮素添加对黄土高原典型草原长芒草氮磷重吸收率及C:N:P化学计量特征的影响[J].植物生态学报,2011,35(8):801-807.

Raghothama K G, Karthikeyan A S. Phosphate Acquisition[J].Plant and Soil,2005,274(1/2):37-49.

Burman U, Garg U K, Kathju S. Effect of phosphorus application on clusterbean under different intensities of water stress[J].Journal of Plant Nutrition,2009,32(4):668-680.

Péret B, Clément M, Nussaume L, et al. Root developmetal adaptation to phosphate starvation:Better safe than sorry[J].Trends in Plant Science,2011,16(8):442-450.

陈磊,王盛锋,刘荣乐,等.不同磷供应水平下小麦根系形态及根际过程的变化特征[J].植物营养与肥料学报,2012,18(2):324-331.

徐朗然,张继敏.黄土高原白羊草草原的基本特征及其地理学意义[J].西北植物学报,1997,17(1):88-93.

李帅,赵国靖,徐伟洲,等.白羊草根系形态特征对土壤水分阶段变化的响应[J].草业学报,2016,25(2):169-177.

Saidi A. Responses of root growth to moderate soil water deficit in wheat seedlings[J].Plant Production Science,2010,13(3):261-268.

Philipp D, Allen V G, Mitchell R, et al. Forage nutritive value and morphology of three Old World bluestems under a range of irrigation levels[J].Crop Science,2005,45(6):2258-2268.

Xu B C, Gao Z J, Wang J, et al. N:P ratio of the grass

Bothriochloa ischaemum

mixed with the legume

Lespedeza davurica

under varying water and fertilizer supplies[J].Plant and Soil,2016,400(1/2):67-79.

Fan J W, Du Y L, Turner N C, et al. Changes in root morphology and physiology to limited phosphorus and moisture in a locally-selected cultivar and an introduced cultivar of

Medicago sativa

L. growing in alkaline soil[J].Plant and Soil,2015,392(1/2):215-226.

Liu Y, Li P, Xu G C, et al. Growth, morphological, and physiological responses to drought stress in

Bothriochloa ischaemum

.Frontiers in Plant Science,2017,8:230-243.

He J, Jin Y, Du Y L, et al. Genotypic variation in yield, yield components, root morphology and architecture, in soybean in relation to water and phosphorus supply[J].Frontiers in Plant Science,2017,8(5):1499-1509.

Abid M, Tian Z W, Ata-uI-karim S T, et al. Adaption to and recovery from drought stress at vegetative stages in wheat (

Triticum aestivum

) cultivars[J].Functional Plant Biology,2016,43(12):1159-1169.

Xu B, Gao Z, Wang J, et al. Morphological changes in roots of

Bothriochloa ischaemum

intercropped with

Lespedeza davurica

following phosphorus application and water stress[J].Plant Biosystems,2015,149(2):298-306.

Liu C G, Wang Y J, Pan K W, et al. Effects of phosphorus application on photosynthetic carbon and nitrogen metabolism, water use efficiency and growth of dwarf bamboo (

Fargesia rufa

) subjected to water deficit[J].Plant Physiology and Biochemistry,2015,96:20-28.

Yang X, Tang Z Y, Ji C J, et al. Scaling of nitrogen and phosphorus across plant organs in shrub land biomes across Northern China[J].Science Reports,2014,4:5448-5455.

汤宏,曾掌权,李向阳,等.水磷耦合烤烟养分吸收分配规律研究[J].水土保持学报,2019,33(2):294-302.

Hong J T, Wang X D, Wu J B. Effects of soil fertility on the N:P stoichiometry of herbaceous plants on a nutrient-limited alpine steppe on the northern Tibetan Plateau[J].Plant and Soil,2015,391(1/2):179-194.

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