[1]王大庆,孟颖,孙泰朋,等.生物黑炭对黑土根际土壤氮素转化强度及无机氮的影响[J].水土保持研究,2016,23(05):85-89,94.
　WANG Daqing,MENG Ying,SUN Taipeng,et al.Effects of Biochar on Nitrogen Transformation and Mineral Nitrogen of Rhizosphere in Black Soil[J].Research of Soil and Water Conservation,2016,23(05):85-89,94.
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生物黑炭对黑土根际土壤氮素转化强度及无机氮的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年05期 页码: 85-89,94 栏目: 出版日期: 2016-10-28
Title:
Effects of Biochar on Nitrogen Transformation and Mineral Nitrogen of Rhizosphere in Black Soil
作者:
王大庆1, 孟颖2, 孙泰朋2, 赵伟2, 王宏燕2
1. 黑龙江省农垦经济研究所, 哈尔滨 150030;
2. 东北农业大学 资源与环境学院, 哈尔滨 150030
Author(s):
WANG Daqing1, MENG Ying2, SUN Taipeng2, ZHAO Wei2, WANG Hongyan2
1. Heilongjiang Economic Research Institute of State Farms, Harbin 150030, China;
2. College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
关键词:
生物黑炭; 黑土; 氮素转化; 无机氮
Keywords:
biochar; black soil; nitrogen transformation; mineral nitrogen
分类号:
S153.6;S156.2
摘要:
采用盆栽试验，研究了生物黑炭对大豆根际土壤氮素转化强度及无机氮的影响。结果表明：固氮作用强度在结荚期达到最大值，此后逐渐呈现出降低的趋势。氨化作用强度在开花期、结荚期和鼓粒期有显著差异，5%生物黑炭处理的氨化作用强度均显著高于CK处理。硝化作用强度在苗期、开花期和结荚期，N2Y5和N1Y5处理下的根际土壤硝化作用强度与CK处理均存在显著性差异；在鼓粒期和成熟期，只有N2Y5处理与CK处理存在显著性差异，分别比CK处理提高了58.87%，84.49%。生物黑炭的适量施用提高了根际土壤铵态氮的含量。苗期、花期、结荚期和鼓粒期不同处理之间铵态氮含量存在显著差异，成熟期差异不显著。合理的生物黑炭施用量对硝态氮利用起着关键性的作用，在苗期、花期、结荚期、鼓粒期，5%生物黑炭的处理均显著高于CK处理，在成熟期，N1Y5，N1Y10和N2Y10处理下的根际土壤硝态氮含量比CK处理显著降低了20.73%，21.04%，22.85%。
Abstract:
Pot experiments were conducted to study the effects of biochar on mineral nitrogen transformations and nitrogen of rhizosphere of soybean. The results showed that nitrogen-fixing capacities were the highest at the podding stage, and then fell gradually. Ammonifying capacities were significantly different in flowering, bearing and podding periods and ammonifying capacities of 5% biochar treatment were much higher than those of CK. Nitrifying capacities of N2Y5 and N1Y5 treatments were significantly different from CK at seedling, flowering and podding stages and nitrifying capacities of N2Y5 were 58.87%, 84.49% higher than those of CK at bearing and maturing period, respectively. NH4+-N contents of soybean rhizosphere were improved by use of biochar, and NH4+-N contents of different treatments were significantly different at seedling stage, flowering and podding and bearing stages, but not remarkably different at maturing stage. Reasonable applications of biochar might play a key role in NO3--N utilization, and NO3--N contents of 5% biochar treatment were much higher than those of CK at seedling, flowering, podding and bearing stage. NO3--N contents of N1Y5, N1Y10 and N2Y10 treatments were 20.73%, 21.04% and 22.85% lower than those of CK at maturing stage.

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备注/Memo

收稿日期:2016-03-08;改回日期:2016-03-17。
基金项目:黑龙江省博士后科研启动金“高效复合菌剂降解秸秆还田对土壤碳库影响机制的研究”（LBH-Q13020）
作者简介:王大庆(1969-),男,黑龙江绥化人,博士,副研究员,主要从事农业生态学和农垦生态经济研究。E-mail:wangdaqing511@163.com
通讯作者:赵伟(1971-),女,河北乐亭人,教授,博士,主要从事农业生态学和土壤生态学研究。E-mail:niersi7105@sina.com

更新日期/Last Update: 1900-01-01