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生物炭修改与部分根区干燥灌相结合,减轻了盐分压力,改善了棉花植物的根形态和用水效率

Jingxiang Hou¹, Heng Wan², Kehao Liang³

¹College of Water Resources and Architectural Engineering, Northwest A&F University, Weihui Road 23, 712100 Yangling, Shaanxi, China; Department of Plant and Environmental Science, Faculty of Science, University of Copenhagen, Højbakkegård Allé 13, DK-2630 Tåstrup, Denmark; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China.

The Science of the total environment

|September 13, 2023

概括

生物炭修正和部分根区干燥灌 (PRD) 改善了棉花的质量.

科学领域:

农业科学农业科学
土壤科学土壤科学
植物生理学植物生理学

背景情况:

盐度和干旱压力显著影响棉花生产.
生物碳修正和减少灌策略是潜在的缓解方法.
了解它们对棉花生理学的综合影响至关重要.

研究的目的:

调查生物炭 (小麦生物炭 - WSP,软木生物炭 - SWP) 和减少灌 (赤字灌,PRD) 在盐度压力下对棉花的协同效应.
分析对 (Na+) 和 (K+) 吸收,根形态,用水效率和盐分耐受性的影响.
确定最佳的组合,以提高棉花的弹性.

主要方法:

吸附实验:通过WSP和SWP使用兰迈尔模型对Na+进行异温吸附.
实验:三个因素 - 生物炭类型 (没有,WSP,SWP),灌策略 (赤字,PRD,满),和NaCl度 (0 mM,200 mM).
测量:离子度 (Na+,K+),根形态 (长度,表面积,体积,密度),用水效率和部分因子生产率.

主要成果:

盐度压力降低了K+度和根生长,但增加了Na+度.
生物炭修改降低了Na+度,增加了K+度,改善了根形态.
在盐应力下,WSP和PRD的组合显著提高了K+/Na+比率,根体积,根表面积,用水效率和部分因子生产率.

结论:

小麦生物炭 (WSP) 与软木生物炭 (SWP) 相比,具有更高的Na+吸附能力.
将WSP与部分根区干燥灌 (PRD) 结合起来,是缓解棉花干旱和盐度压力的高效策略.
这种综合方法提高了棉花的生理弹性,营养吸收和在充满挑战的环境中整体生产率.

关键词:

吸附等热模型的吸附等热模型生物炭是一种生物炭.这就是NaClCl.部分根区干燥灌灌使用水的效率提高了水的使用效率.

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