生态环境学报2012，Vol.21Issue(2)：225-230,6.
施氮水平对小麦-玉米轮作体系氨挥发与氧化亚氮排放的影响
Effects of N Fertilization Rates on the NH3 Volatilization and N2O Emissions from the Wheat-Maize Rotation System in North China Plain
摘要
Abstract
This experiment studied the ammonia volatilization and N2O emissions from the winter wheat-summer maize rotation system in North China Plain using continuous air flow enclosure method. The results showed that the ammonia volatilization and N2O emissions varied seasonally, increased with N fertilization rate, and the peak emission appeared 1-3 days after fertilization. Higher ammonia volatilization and N2O emissions from maize season than those from wheat were found, which contributed to 53.5%-68.9% and 54.7%-82.3% of the total losses, respectively. In the wheat-maize rotation system, the net loss of ammonia volatilization were 4.28-31.31 kg N-hm-2, accounting for 3.17%-5.80% of the N fertilization rate respectively; Meanwhile, the net N2O emissions were 50.95-1051.03 g Nhm-2, accounting for 0.04%-0.23 % of the N fertilization rate. Consequently, the major factor influencing gaseous loss in wheat-maize rotation system was the N fertilization rate, and the key period to control gaseous losses was summer maize season.关键词
施氮水平/小麦-玉米轮作体系/氨挥发/氧化亚氮排放Key words
nitrogen level/ wheat-maize rotation system/ ammonia volatilization/ nitrous oxide emission分类
农业科技引用本文复制引用
马银丽,吉艳芝,李鑫,张琳,巨晓棠,张丽娟..施氮水平对小麦-玉米轮作体系氨挥发与氧化亚氮排放的影响[J].生态环境学报,2012,21(2):225-230,6.基金项目
国家自然科学基金项目(30571110) （30571110）
农业部公益性行业计划项目(201103003) （201103003）
