南京林业大学学报(自然科学版) ›› 2013, Vol. 37 ›› Issue (01): 127-131.doi: 10.3969/j.issn.1000-2006.2013.01.023

• 城镇绿地特殊生境生态修复关键技术研究专栏 • 上一篇    下一篇

杨麦间作系统土壤氨挥发特点分析

程小娜,薛建辉*,吴永波   

  1. 南京林业大学,江苏省林业生态工程重点实验室,江苏 南京 210037
  • 出版日期:2013-02-18 发布日期:2013-02-18
  • 基金资助:
    收稿日期:2011-11-25 修回日期:2012-05-18
    基金项目:“十一五”国家科技支撑计划(2008BAJ10B04); 国家林业公益性行业科研专项项目(200904001-3)
    第一作者:程小娜,硕士生。*通信作者:薛建辉,教授。E-mail: jhxue@njfu.com.cn。
    引文格式:程小娜,薛建辉,吴永波. 杨麦间作系统土壤氨挥发特点分析[J]. 南京林业大学学报:自然科学版,2013,37(1):127-131.

Characteristics of soil ammonia volatilization in interplanting system of poplar and wheat

CHENG Xiaona, XUE Jianhui*, WU Yongbo   

  1. Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Online:2013-02-18 Published:2013-02-18

摘要: 利用通气法田间原位实验,研究了不同施氮水平下不同株行距杨麦间作系统、单作麦田系统的土壤氨挥发特点。结果表明:间作系统与单作系统土壤氨挥发变化趋势无明显差异,不论是基肥期还是追肥期各处理土壤氨挥发主要发生在施肥后6~7 d,占总累积挥发量的60%~83%; 间作系统不同施氮水平土壤氨挥发速率及挥发累积量均不同程度低于单作系统相应施氮水平下的挥发速率及挥发累积量; 在整个冬小麦生长季内,株行距2 m×5 m的杨麦间作系统(I1)和2 m×15 m的杨麦间作系统(I2)在不同施氮水平下土壤氨挥发累积量分别比单作系统降低了0.76~4.23 kg/hm2和2.13~4.16 kg/hm2

Abstract: In situ experiments combined with venting method were conducted to study the characteristics of soil ammonia volatilization in two kinds of interplanting systems of poplar and wheat and wheat monocropping system under different N fertilization amount.The results showed that there was no significant difference among the three systems for the changes of ammonia volatilization application of fertilizer. 60%-83% of ammonia volatilization occurred mainly in 6-7 days after fertilization in all treatments both at basic fertilizer period and top dressing period. Ammonia volatilization rate and the accumulation of ammonia volatilization of interplanting system were less than that of wheat monocropping system in different degrees. In the whole growth period, the accumulation of ammonia volatiliation of I1(2 m×5 m)and I2(2 m×15 m)interplanting systems were separately 0.76-4.23 kg/hm2, 2.13-4.16 kg/hm2less than that of wheat monocropping system.

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