中南林业科技大学学报

持续干旱下氮添加对马尾松苗木抗旱性的影响

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陶青红 , 付远洪 , 丁贵杰

中南林业科技大学学报 | 林学 2026,46(6): 103-111

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中南林业科技大学学报 |林学 2026 , 46 (6) : 103 -111

持续干旱下氮添加对马尾松苗木抗旱性的影响

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陶青红, 付远洪, 丁贵杰

作者信息

贵州大学　a. 贵州省森林资源与环境研究中心；b. 林学院，贵州　贵阳　550025

通讯作者:

丁贵杰（gjdinggzu@126.com），教授，博士，博士研究生导师。

作者简介:

陶青红（18385904033@163.com），硕士研究生。

The impact of nitrogen addition on the drought resistance of Pinus massoniana seedlings under continuous drought conditions

Qinghong TAO, Yuanhong FU, Guijie DING

Affiliations

a. Guizhou Forest Resources and Environment Research Center; b. College of Forestry, Guizhou University, Guiyang 550025, Guizhou, China

出版时间: 2026-06-25 doi: 10.14067/j.cnki.1673-923x.2026.06.010

文章导航

摘要

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【目的】

研究氮添加对持续干旱及复水下马尾松苗木水分利用及相关酶活性的影响，为探究氮添加是否提高马尾松抗旱能力提供参考。

【方法】

以1年生马尾松苗木为试验材料，设置施氮组（N）和对照组（CK，不施氮肥），通过盆栽进行持续干旱及复水试验。于持续干旱第0、20、40、60天及复水后第2天取样，测定土壤含水量、苗木生理生化指标及耗水量，并进行抗旱性综合评价。

【结果】

1）施氮组提高了干旱胁迫期间土壤含水量、茎水势、氨基酸含量和严重-极端干旱阶段（20～60 d）的苗木耗水量，降低了极端干旱阶段（40～60 d）的可溶性蛋白、超氧阴离子和丙二醛含量；2）在持续干旱40～60 d，施氮组氨基酸、脯氨酸含量和过氧化氢酶活性大幅升高；3）复水后，施氮组的可溶性蛋白、超氧阴离子和丙二醛含量及超氧化物歧化酶和过氧化氢酶活性显著降低，而对照组仍维持较高水平，表明其干旱后恢复能力较弱；4）采用隶属函数法对生理生化指标进行抗旱性综合评价，结果表明在极端干旱阶段（40～60 d），施氮组表现出较强的抗旱性。

【结论】

施氮能提高干旱期间土壤的保水性能，增加马尾松苗木渗透调节物质含量并增强抗氧化酶活性，从而减少细胞脱水，减轻苗木的氧化损伤，以提高其在干旱胁迫下的抗旱性及干旱后恢复能力。

关键词

马尾松 / 苗木 / 干旱-复水 / 氮添加 / 生理生化 / 耗水量

Abstract

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【Objective】

To investigate the effects of nitrogen addition on water use efficiency and related enzyme activities of P. massoniana seedlings under continuous drought and re-watering, and to provide reference for exploring whether nitrogen addition improves drought resistance of P. massoniana.

【Method】

One-year-old P. massoniana seedlings were used as experimental materials, and a nitrogen application group (N) and a control group (CK, no nitrogen fertilizer applied) were set up. Continuous drought and re-watering experiments were conducted through potted plants. Samples were collected at 0, 20, 40, and 60 days during continuous drought, as well as two days after re-watering. Soil water content, physiological and biochemical indices, and water consumption were measured for drought resistance evaluation.

【Result】

1) The nitrogen application group increased soil moisture content, stem water potential, amino acid content, and water consumption of seedlings during the severe extreme drought stage (20-60 days), while reducing soluble protein, superoxide anion, and malondialdehyde content during the extreme drought stage (40-60 days); 2) During 40-60 days of drought, the nitrogen application group showed a significant increase in amino acid, proline content, and CAT activity; 3) After re-watering, the soluble protein, superoxide anion, and malondialdehyde content, as well as the activities of superoxide dismutase and catalase, were significantly reduced in the nitrogen application group, while the control group maintained high levels, indicating weak recovery ability after drought; 4) The comprehensive evaluation of drought resistance was conducted on physiological and biochemical indicators using the membership function method. The results showed that during the extreme drought stage (40-60 days), the nitrogen application group exhibited strong drought resistance.

【Conclusion】

Nitrogen application can improve soil water retention during drought periods, increase the content of osmoregulatory substances in P. massoniana seedlings, and enhance antioxidant enzyme activity, thereby reducing cell dehydration and mitigating oxidative damage to seedlings, thus improving their drought resistance and post-drought recovery ability under drought stress.

Key words

Pinus massoniana / seedlings / drought-rewatering / nitrogen addition / physiology and biochemistry / water consumption

引用本文

陶青红, 付远洪, 丁贵杰. 持续干旱下氮添加对马尾松苗木抗旱性的影响. 中南林业科技大学学报, 2026 , 46 (6) : 103 -111 . DOI: 10.14067/j.cnki.1673-923x.2026.06.010

Qinghong TAO, Yuanhong FU, Guijie DING. The impact of nitrogen addition on the drought resistance of Pinus massoniana seedlings under continuous drought conditions[J]. Journal of Central South University of Forestry & Technology, 2026 , 46 (6) : 103 -111 . DOI: 10.14067/j.cnki.1673-923x.2026.06.010

基金

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国家自然科学基金联合基金项目(U24A20431)
贵州省科技计划项目(黔科合中引地〔2024〕044)

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2026年第46卷第6期

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doi: 10.14067/j.cnki.1673-923x.2026.06.010

接收时间：2025-04-01
首发时间：2026-10-30
出版时间：2026-06-25

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收稿日期：2025-04-01
修回日期：2025-07-17

基金

国家自然科学基金联合基金项目(U24A20431)

贵州省科技计划项目(黔科合中引地〔2024〕044)

作者信息

贵州大学　a. 贵州省森林资源与环境研究中心；b. 林学院，贵州　贵阳　550025

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丁贵杰（gjdinggzu@126.com），教授，博士，博士研究生导师。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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