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杨麦间作系统土壤氨挥发特点分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年01期
Page:
127-131
Column:
城镇绿地特殊生境生态修复关键技术研究专栏
publishdate:
2013-01-15

Article Info:/Info

Title:
Characteristics of soil ammonia volatilization in interplanting system of poplar and wheat
Author(s):
CHENG Xiaona XUE Jianhui* WU Yongbo
Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China
Keywords:
interplanting system N fertilization amount ammonia volatilization rate accumulation of ammonia volatilization
Classification number :
S718; S714
DOI:
10.3969/j.issn.1000-2006.2013.01.023
Document Code:
A
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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Last Update: 2013-01-15