[1]庞飞,李志刚,李健.有机物料和氮添加对宁夏沙化土壤碳矿化的影响[J].水土保持研究,2018,25(03):75-80.
 PANG Fei,LI Zhigang,LI Jian.Effects of Incorporated Organic Materials with N Fertilizer on Soil Carbon Mineralization of Desertified Soil in Ningxia[J].,2018,25(03):75-80.
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有机物料和氮添加对宁夏沙化土壤碳矿化的影响()
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
25卷
期数:
2018年03期
页码:
75-80
栏目:
出版日期:
2018-04-10

文章信息/Info

Title:
Effects of Incorporated Organic Materials with N Fertilizer on Soil Carbon Mineralization of Desertified Soil in Ningxia
作者:
庞飞13 李志刚23 李健3
1. 宁夏大学 生命科学学院, 银川 750021;
2. 宁夏大学 农学院, 银川 750021;
3. 宁夏林业研究院 种苗生物工程国家重点实验室, 银川 750004
Author(s):
PANG Fei13 LI Zhigang23 LI Jian3
1. School of Life Sciences, Ningxia University, Yinchuan 750021, China;
2. School of Agronomy, Ningxia University, Yinchuan 750021, China;
3. State Key Laboratory of the Seedling Bioengineering, Ningxia Forestry Institute, Yinchuan 750004, China
关键词:
有机物料氮肥碳矿化沙化土壤
Keywords:
organic materialnitrogen fertilizersoil organic carbon mineralizationdesertified soils
分类号:
S156.5
摘要:
以宁夏当地的枝条、秸秆为材料,通过室内模拟试验设计了不添加(N)、添加枝条(B,5 g/kg)、添加秸秆(S,5 g/kg)配施不同水平氮肥(N0,0 mg/kg;N1,40 mg/kg;N2,50 mg/kg;N3,60 mg/kg),研究了宁夏沙化土壤碳矿化及土壤微生物性质的影响。结果表明:各类处理均在第一天出现了矿化速率的最大值,到第3天时下降了72.47%~96.54%(N),55.58%~63.43%(B),65.92%~75.38%(S)。各类处理有机碳累积矿化量为0.65~0.88 g/kg(N),0.58~0.99 g/kg(B),0.63~1.44 g/kg(S)。各处理有机碳、全氮、碳矿化量、微生物性质在同一氮水平下呈现S > B > N趋势,而在同一种有机物料添加处理下,则整体上伴随着施氮水平的提高呈现先增加后降低或提高的趋势(N处理的微生物量氮、脲酶除外)。碳累积矿化量及平均矿化速率与有机碳、全氮、微生物量碳氮、酶活均呈极显著关系(p<0.01)。有机物料添加和氮肥添加以及它们的交互作用总体上对有机碳的矿化速率、矿化量有极显著影响(F>F0.01)。该研究为宁夏当地及中国北方沙化土壤改良研究提供了参考。
Abstract:
The local poplar branch and corn straw in NingXia were used as the test materials. Through indoor simulation experiment with treatments of no addition (N), addition of branches (B), addition of straws (S) combining with nitrogen fertilizer of different contents (N0, 0 mg/kg; N1, 40 mg/kg; N2, 50 mg/kg; N3, 60 mg/kg), we investigated the soil organic carbon mineralization and soil microbial properties of desertified soils in Ningxia. The results showed that the soil organic C mineralization rates of all treatments sharply declined at the first day of incubation, decreased by 72.47%~96.54% (N), 55.58%~63.43% (B), 65.92%~75.38% (S), respectively, over 3 days. The soil organic carbon cumulative mineralization amounts of the treatments were 0.65~0.88 g/kg (N), 0.58~0.99 g/kg (B),0.63~1.44 g/kg (S), respectively. At the same N application rate, the mineralization cumulative amounts of soil carbon, MBC, MBN, enzymes activity of all kinds of treatment presented the order:S > B > N, which increased or decreased after first rise with the increased of N application amount under the same kind of organic material (except MBN, urease activity of N). The correlations between soil mineralization cumulative amount, mineralization rate and carbon,nitrogen, MBC, MBN, enzyme activity were highly insignificant (p<0.01). Organic material, nitrogen fertilizer and the interaction of them significantly influenced on soil mineralization cumulative amount in general, mineralization rate (F > F0.01). The study results can provide the successful case of sandy soil improvement in Ningxia and the other arid and semiarid areas of north China.

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备注/Memo

备注/Memo:
收稿日期:2017-05-20;改回日期:2017-06-05。
基金项目:国家国际合作专项(2015DFA90900);引进国际先进林业科学技术项目(2013-04-79)
作者简介:庞飞(1992-),男,宁夏石嘴山人,在读硕士研究生,研究方向为生物化学与分子生物学。E-mail:18795210125@163.com
通讯作者:李志刚(1985-),男,宁夏海原人,博士,研究方向从事草地生态学方面的研究E-mail:lizg001@sina.com
更新日期/Last Update: 1900-01-01