[1]丁婷婷,王百群,何瑞清,等.施用秸秆对土壤可溶性有机碳氮及矿质氮的影响[J].水土保持研究,2014,21(06):72-77.
　DING Ting-ting,WANG Bai-qun,HE Rui-qing,et al.Effects of Addition Amounts of Straw on Soil Dissolved Organic Carbon, Nitrogen and Mineral Nitrogen[J].Research of Soil and Water Conservation,2014,21(06):72-77.
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施用秸秆对土壤可溶性有机碳氮及矿质氮的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年06期 页码: 72-77 栏目: 出版日期: 2014-12-28
Title:
Effects of Addition Amounts of Straw on Soil Dissolved Organic Carbon, Nitrogen and Mineral Nitrogen
作者:
丁婷婷1, 王百群1,2,3, 何瑞清1, 张燕1
1. 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
2. 西北农林科技大学 水土保持研究所 土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100;
3. 中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100
Author(s):
DING Ting-ting1, WANG Bai-qun1,2,3, HE Rui-qing1, ZHANG Yan1
1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
可溶性有机碳; 可溶性有机氮; 矿物态氮; 秸秆; 培养试验
Keywords:
dissolved organic carbon; dissolved organic nitrogen; mineral nitrogen; straw; incubation experiment
分类号:
S153.6
摘要:
为了研究施用秸秆对土壤可溶性有机碳氮及矿质态氮含量的影响，设置CK（对照），M2，M4，M6共4个处理，处理中每100 g干土中加入秸秆量分别为0，2，4，6 g。在室温为25℃、土壤含水量为田间持水量的70%的条件下进行培养试验，分别在15，30，45，60，105，150 d时，采取各处理中的土壤样品，观测土壤可溶性有机碳氮及矿质氮的动态变化。结果表明：4个处理的土壤可溶性有机碳、氮具有相同的变化趋势，表现为随着培养时间的推移，先增加，再减小，然后经过一段时间的波动后趋于平稳。在培养的整个过程中，M4与M6处理的土壤可溶性有机碳、氮明显高于CK中的含量，表明了施用秸秆可以促进土壤可溶性有机碳氮的累积。在相同时间段内，各处理之间铵态氮含量无明显差异，与对照相比，加入秸秆后，土壤中硝态氮的含量明显下降。
Abstract:
In order to examine the effects of straw amendment on soil dissolved organic carbon, nitrogen and mineral nitrogen, 4 treatments were set up, which included CK (no straw), M2 (2 g of straw in 100 g soil), M4 (4 g of straw in 100 g soil) and M6 (6 g of straw in 100 g soil). The straw and soil were mixed evenly, the soil water was kept 70% of water holding capacity, then the incubation experiment was conducted at room temperature (25℃), and soil moisture was controlled by weighing. Soil samples were taken in 15 d, 30 d, 45 d, 60 d, 105 d and 150 d, respectively. The results showed that the 4 treatments had the same change trend in terms of soil dissolved organic carbon(DOC) and dissolved organic nitrogen(DON), upward trend was observed at first, then DOC and DON went down, and leveled off after a period of fluctuation. The soil levels of DOC and DON of M4 and M6 treatments were significantly higher than CK. Ammonium nitrogen content had no obvious difference among all treatments in the same period. The contents of nitrate nitrogen significantly decreased after straw was added into soil compared with the CK.

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备注/Memo

收稿日期:2014-10-22;改回日期:2014-11-03。
基金项目:国家自然科学基金重点项目（41330852）；中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题”（XDA05050504）；国家自然科学基金（40301024）；黄土高原土壤侵蚀与旱地农业国家重点实验室自主课题（10502-T2）
作者简介:丁婷婷(1988-),女,甘肃庄浪人,硕士研究生,主要从事土壤生态研究。E-mail:Dingtingting11@126.com
通讯作者:王百群(1968-),男,陕西渭南人,博士,副研究员,从事土壤有机碳氮循环研究。E-mail:bqwang@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01