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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:

第45卷

期数:

2017年23期

页码:

262-266

栏目:

资源与环境

出版日期:

2017-12-05

文章信息/Info

Title:

Effects of lime addition on inorganic nitrogen and N₂O emission in different paddy soils under flooding condition

作者:

庄艳¹; 杨程²

1.中国地质科学院岩溶地质研究所/国土资源部广西壮族自治区岩溶动力学重点实验室，广西桂林 541004；
2.江苏省地质调查研究院，江苏南京 210018

Author(s):

Zhuang Yan; et al

关键词:

水稻土壤; 石灰; 秸秆; 无机氮; N₂O排放

Keywords:

-

分类号:

S153；S511.06

DOI:

-

文献标志码:

A

摘要:

秸秆还田和施用石灰是水稻种植的常用措施，目前对2种措施下土壤无机氮变化和N₂O排放情况了解得较少。选取5种理化性质差异较大的水稻土壤，加入玉米秸秆，设置添加、不添加石灰2种处理，于25 ℃室内淹水培养40 d，调查土壤无机氮含量及N₂O气体排放的变化。结果表明，添加秸秆淹水培养40 d后，5个水稻土壤铵态氮含量无显著差异，达到6.16~7.75 mg/kg。除淮安土壤外，整个培养过程中其他4个土壤硝态氮含量呈现显著降低趋势，培养40 d时降至10 mg/kg以下。硝态氮含量最高的淮安水稻土壤N₂O累积排放量达到48.9 mg/kg，显著高于其他4个土壤(12.3~18.6 mg/kg)。土壤N₂O排放集中在培养过程中的前5 d，约占总排放量的97.4%~99.1%。添加石灰没有明显改变土壤无机氮含量，但显著降低N₂O排放量，N₂O降幅达到25.3%~81.7%，随着土壤pH值提高呈降低趋势。

Abstract:

-

参考文献/References:

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相似文献/References:

[1]顾春朝,傅民杰,梁运江.延边地区水稻土壤速效养分对开垦年限和施肥方式的响应[J].江苏农业科学,2014,42(11):372.
　Gu Chunzhao,et al(7).Response of soil available nutrient to different cultivation histories and fertilization types in paddy field of Yanbian area[J].Jiangsu Agricultural Sciences,2014,42(23):372.
[2]李素霞,莫小荣,覃雪梅,等.氮镉交互作用下石灰对白菜的影响[J].江苏农业科学,2017,45(10):103.
　Li Suxia,et al.Effect of lime on Chinese cabbage under interaction of nitrogen and cadmium[J].Jiangsu Agricultural Sciences,2017,45(23):103.

备注/Memo

备注/Memo:

收稿日期：2016-06-22
基金项目：中国地质科学院岩溶地质研究所基本科研业务费项目(编号：2015004)；江苏省科技计划-社会发展项目(编号：BE2014722)。
作者简介：庄艳(1986—)，女，新疆乌鲁木齐人，硕士，助理研究员，主要从事土壤环境研究。E-mail：zhuangyan1019@karst.ac.cn。
通信作者：杨程，硕士，工程师，主要从事土壤污染分析研究。E-mail：yc384522@163.com。

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更新日期/Last Update: 2017-12-05