[1]张鑫磊,杨镇,李旸,等.夜间增温条件下免耕对土壤碳矿化的影响[J].江苏农业学报,2018,(03):540-545.[doi:doi:10.3969/j.issn.1000-4440.2018.03.009]
 ZHANG Xin-lei,YANG Zhen,LI Yang,et al.Effects of no-tillage on soil carbon mineralization under nighttime warming[J].,2018,(03):540-545.[doi:doi:10.3969/j.issn.1000-4440.2018.03.009]
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夜间增温条件下免耕对土壤碳矿化的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年03期
页码:
540-545
栏目:
耕作栽培·资源环境
出版日期:
2018-06-25

文章信息/Info

Title:
Effects of no-tillage on soil carbon mineralization under nighttime warming
作者:
张鑫磊1杨镇1李旸2谢晓金1张耀鸿1
(1.南京信息工程大学气象灾害预报预警与评估协同创新中心/江苏省农业气象重点实验室,江苏南京210044;2.山西省气象服务中心,山西太原030002)
Author(s):
ZHANG Xin-lei1YANG Zhen1LI Yang2 XIE Xiao-jin1ZHANG Yao-hong1
(1.Nanjing University of Information Science & Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing 210044,China;2.Shanxi Meteorological Service Center, Taiyuan 030002 ,China)
关键词:
夜间增温免耕有机碳矿化
Keywords:
nighttime warmingno-tillagesoil organic carbon mineralization
分类号:
S152.4+5
DOI:
doi:10.3969/j.issn.1000-4440.2018.03.009
文献标志码:
A
摘要:
通过室内恒温培养试验研究了CK(常温+翻耕)、W(夜间增温+翻耕)、NT(常温+免耕)和WNT(夜间增温+免耕)4个处理土壤耕作层有机碳矿化速率及其对不同种类氮肥的响应特征。各处理土壤分别加入2种氮肥溶液[(NH4)2SO4和KNO3]和蒸馏水之后,在5 ℃、10 ℃、15 ℃、20 ℃、25 ℃和30 ℃条件下室内恒温培养,测定土壤有机碳矿化速率。结果表明,在 5~25 ℃,土壤有机碳矿化速率随着培养温度的升高而显著增加。与CK相比,NT和WNT处理显著提高了土壤有机碳矿化速率,分别增加了 14.6%~36.7%和 18.3%~60.0%。与添加蒸馏水相比,施加(NH4)2SO4溶液使土壤有机碳矿化速率均值增加了 84.6%~93.3%,而施加KNO3则无明显影响。而且,施加(NH4)2SO4条件下4种处理土壤的Q10值均增大。因此,本试验中夜间增温和免耕均提高了农田土壤有机碳的矿化速率,且两者叠加表现出正交互作用;施用KNO3肥料可缓解土壤有机碳矿化。
Abstract:
Incubation experiments were conducted to investigate the mineralization rates of organic carbon of four treated tillage layer soils and the response to different kinds of nitrogen fertilizer. Four treatments were: CK (normal temperature + tillage), W (nighttime warming + tillage), NT (normal temperature + no tillage) and WNT (nighttime warming + no tillage). The soils were incubated at 5 ℃, 10 ℃, 15 ℃, 20 ℃, 25 ℃ and 30 ℃ with the addition of (NH4)2SO4 or KNO3 or distilled water, respectively. At 5-25 ℃, the mineralization rates of soil organic carbon increased with the increasing of incubation temperature. Compared with CK, the mineralization rate of soil organic carbon significantly increased by 14.6%-36.7% and 18.3%-60.0% under NT and WNT treatments, respectively. Compared with the application of distilled water, the application of (NH4)2SO4 increased soil organic carbon mineralization rates by 84.6%-93.3%, while the application of KNO3 had no significant effect. Furthermore, Q10 values of the four soils treated with (NH4)2SO4 were all increased. Thus, in the study, nighttime warming and no tillage could both evidently stimulate soil organic carbon mineralization, and both of them showed positive interaction; application of KNO3 fertilizer could alleviate the process of soil organic carbon mineralization.

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备注/Memo

备注/Memo:
收稿日期:2017-11-06 基金项目:国家自然科学基金项目(41671247);江苏省自然科学基金项目(BK20171455);江苏省大学生创新创业训练计划项目(201710300018Z);大气科学类校外(野外)实习实践考察项目(YWKC2017A12) 作者简介:张鑫磊(1992-),男,山西太原人,硕士研究生,主要从事地气交换方面的研究。(E-mail) 550442249@qq.com 通讯作者:张耀鸿,(E-mail) yhzhang@nuist.edu.cn
更新日期/Last Update: 2018-07-04