Leaching and migration characteristics of nitrogen during coastal saline soil remediation by combining humic acid with gypsum and bentonite

IF 3.5 2区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Annals of Agricultural Science Pub Date : 2023-01-01 DOI:10.1016/j.aoas.2023.02.001
Jiancheng Chen , Guoqing Hu , Hui Wang , Weizhang Fu
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腐殖酸与石膏、膨润土联合修复滨海盐渍土过程中氮的浸出和迁移特性
滨海盐渍土是一种分布广泛、可供缓解、开发利用的重要资源。添加外源材料改良盐碱地已被证明是提高其农业生产力的有效措施。然而,关于滨海盐渍土改良过程中氮(N)浸出风险的信息有限。因此,利用土柱和15N同位素示踪剂,研究了添加风化煤腐殖酸(HA)、石膏和膨润土后,黄河三角洲(山东)盐渍土中N的浸出和迁移特征。结果表明,HA和石膏的联合施用可以显著提高土壤渗透速率(SPR),降低盐渍土的pH值,但不会增加N的浸出率,特别是以重量计施用比例为1:3(HA:石膏)。HA和膨润土的联合施用不能提高SPR和降低pH,但可以抑制硝化作用,更好地保持盐渍土的15N。因此,我们认为膨润土不能代替石膏,但可以作为助剂来实现更好的保氮效果。HA和石膏的混配可以达到改良盐碱地和保N的双重效果,有利于黄河三角洲的环境保护和农业生产的高质量发展。
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来源期刊
Annals of Agricultural Science
Annals of Agricultural Science AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
12.60
自引率
0.00%
发文量
18
审稿时长
33 days
期刊介绍: Annals of Agricultural Sciences (AOAS) is the official journal of Faculty of Agriculture, Ain Shams University. AOAS is an open access peer-reviewed journal publishing original research articles and review articles on experimental and modelling research at laboratory, field, farm, landscape, and industrial levels. AOAS aims to maximize the quality of the agricultural sector across the globe with emphasis on the Arabian countries by focusing on publishing the high-quality applicable researches, in addition to the new methods and frontiers leading to maximizing the quality and quantity of both plant and animal yield and final products.
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