Effects of water and nitrogen additions on the allocation pattern and stoichiometric characteristics of C, N, P, and K in Xanthoceras sorbifolia seedlings

SHU Min; QING Yun; Aodungerile; HONG Yan; XIN Ying; Laxinamujila

doi:10.7606/j.issn.1000-4025.20240112

Xibei zhiwu xuebao (Nov 2024)

Effects of water and nitrogen additions on the allocation pattern and stoichiometric characteristics of C, N, P, and K in Xanthoceras sorbifolia seedlings

SHU Min ,
QING Yun ,
Aodungerile ,
HONG Yan ,
XIN Ying ,
Laxinamujila

Affiliations

SHU Min: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China; National and Local Joint Engineering Research Center for Mongolian Medicine Research and Development, Tongliao, Inner Mongolia 028000, China
QING Yun: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China; National and Local Joint Engineering Research Center for Mongolian Medicine Research and Development, Tongliao, Inner Mongolia 028000, China
Aodungerile: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China
HONG Yan: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China; National and Local Joint Engineering Research Center for Mongolian Medicine Research and Development, Tongliao, Inner Mongolia 028000, China
XIN Ying: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China; National and Local Joint Engineering Research Center for Mongolian Medicine Research and Development, Tongliao, Inner Mongolia 028000, China
Laxinamujila: Mongolian Medicine College, Inner Mongonlia Minzu University, Tongliao, Inner Mongolia 028000, China

DOI: https://doi.org/10.7606/j.issn.1000-4025.20240112
Journal volume & issue: Vol. 44, no. 11
pp. 1769 – 1779

Abstract

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[Objective] The study aims to investigate the response of C, N, P, and K distribution to water and nitrogen addition in Xanthoceras sorbifolia seedlings in order to provide references for water-nitrogen environmental adaptation strategies and high-quality seedling cultivation. [Methods] A two-factor (nitrogen and water) randomized block design was adopted in this study. Four N fertilization levels [N0:0 g/m2, N1: 5 g/m2, N2:10 g/m2, and N3:15 g/m2] and three levels of water addition [well watered (WCK), drought (Wd), and fully watered(Ww)] were set up to explore the impact on the ecological stoichiometric characteristics of X . sorbifolia leaves, branches, and roots. [Results] (1) The C, N, P, and K levels of seedlings were independently or interactively influenced by nitrogen and water, while the stoichiometric ratios were mainly affected by nitrogen addition. Under well-watered conditions (WCK), nitrogen addition increased C, N, and P levels. Under drought conditions (Wd), high nitrogen addition (N3) could resist drought by increasing K level and decreasing N and P levels. Under well-watered conditions (Ww), only high nitrogen addition (N3) effectively alleviated nitrogen limitation. (2) C, N, P, and K nutrients were mainly concentrated in leaves, supporting photosynthesis and vegetative growth. The variability of N and P contents in leaves was high, but the N/P ratio remained stable. (3) The same element exhibited a high correlation among different organs, particularly between leaves and roots, maintaining stable growth. [Conclusion] Nitrogen addition alleviates nitrogen deprivation but increases the demand for P and K. It is recommended to reduce nitrogen fertilizer application under suitable water condition to reduce pollution and maintain growth potential.

Published in Xibei zhiwu xuebao

ISSN: 1000-4025 (Print)
Publisher: Science Press
Country of publisher: China
LCC subjects: Science: Biology (General); Science: Botany
Website: http://xbzwxb.alljournal.net/xbzwxben/home

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