|本期目录/Table of Contents|

[1]于嘉文,宋明丹,康倍铭,等.不同生物炭施用水平对沙质土壤氮素淋溶和持水特性的影响[J].江苏农业科学,2023,51(17):212-218.
 Yu Jiawen,et al.Effects of different biochar application levels on nitrogen leaching and water retention characteristics of sandy soil[JY。]Yu Jiawen,et al(212)[J].Jiangsu Agricultural Sciences,2023,51(17):212-218.
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不同生物炭施用水平对沙质土壤氮素淋溶和持水特性的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第51卷
期数:
2023年第17期
页码:
212-218
栏目:
资源与环境
出版日期:
2023-09-05

文章信息/Info

Title:
Effects of different biochar application levels on nitrogen leaching and water retention characteristics of sandy soil[JY。]Yu Jiawen,et al(212)
作者:
于嘉文1宋明丹12康倍铭3李正鹏1
1.青海大学农林科学院,青海西宁 810016; 2.国家农业环境西宁观测实验站,青海西宁 810016;3.青海大学水利电力学院,青海西宁 810016
Author(s):
Yu Jiawenet al
关键词:
生物炭氮素淋失水分特征曲线水分常数
Keywords:
-
分类号:
S157
DOI:
-
文献标志码:
A
摘要:
为了研究不同生物炭用量对青海省沙质土壤氮素淋失和水分保持的影响,通过室内土柱模拟淋洗试验,设置B0(0 kg/m2)、B2(2 kg/m2)、B4(4 kg/m2)、B6(6 kg/m2)4个生物炭施用水平。结果表明,生物炭添加能够有效减少土壤水分渗漏,B4处理的水分累积渗漏量最小,与B0相比减少了14.1%。相比B0处理,B4处理显著降低土壤的NO-3-N和NH+4-N淋失,分别降低了20.7%和59.9%;土壤氮素主要以NO-3-N的形式淋失,淋失量占矿质氮累积渗漏总量的84.9%~93.4%。添加生物炭可显著增加氮素在土壤中的贮存,土壤NO-3-N含量在B4处理达到最大,为3.45 mg/kg;土壤NH+4-N含量在B6处理达到最大,为3.38 mg/kg。在各离心吸力下,体积含水率随生物炭施用量的增加而增加,在B6处理达到最大;土壤田间持水量、凋萎系数和有效水含量均随生物炭用量的增加而增加,生物炭用量从0 kg/m2增加到6 kg/m2时,各水分常数分别增加了51%、110%和14%。本研究表明,4 kg/m2生物炭能有效提高沙质土壤的水分、养分在土壤中的存留,在青海省土壤改良方面有较大的应用前景。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2022-11-10
基金项目:青海省科技厅县域创新试点县建设专项(编号:2020-0407-NCC-0001);青海省农林科学院基本科研业务费专项(编号:2017-NKY-05);青海大学青年科研基金(编号:2020-QGY-13)。
作者简介:于嘉文(1998—),女,山东威海人,硕士,主要从事生物炭农业及生态环境效益研究。E-mail:yjw317413@163.com。
通信作者:李正鹏,博士,副研究员,主要从事农业资源与环境研究。E-mail:lipengzheng131@163.com。
更新日期/Last Update: 2023-09-05