%0 Journal Article
%T Ammonia volatilization from rice field under different water conditions in lower Liaohe River Plain<br>辽河下游平原不同水分条件下稻田氨挥发
%A CHEN Zhen-hua
%A CHEN Li-jun
%A WU Zhi-jie
%A ZHANG Yu-lan
%A JUAN Ying-hua
%A <br>陈振华
%A 陈利军
%A 武志杰
%A 张玉兰
%A 隽英华
%J 应用生态学报
%D 2007
%I 
%X With ventilating chamber, this paper measured the ammonia volatilization from a meadow brown soil rice field after N fertilization under different water conditions in lower Liaohe River Plain. The results showed that there was an obvious ammonia volatilization after N fertilization. The total ammonia volatilization during rice growth period was 11.64-34.01 kg N x hm(-2), accounting for 4.66%-11.66% of applied N. The volatilization loss of applied N at different growth stages followed the order of tillering stage > booting stage > before transplanting, and the peak was appeared at 2-4 days after N fertilization. Field water condition had a strong effect on ammonia volatilization. Under waterlogging, both the amount of total ammonia volatilization and the percentage of lost fertilizer N were higher, and the ammonia volatilization rate increased with increasing N application rate, being significantly different among different N levels (P < 0.05). Under un-waterlogging, the ammonia volatilization was relatively low. N application rate and the ammonium concentration and pH in surface water were the main factors affecting ammonia volatilization, while P application rate had little effect when the N application rate was 180 kg N x hm(-2).
%K meadow brown soil
%K ammonia volatilization
%K rice field
%K water condition<br>潮棕壤
%K NH3挥发
%K 稻田
%K 水分条件
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=61AF265ECF45EA95BF70802DA6AA6829&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=59906B3B2830C2C5&sid=316AB18210990281&eid=7566B65E140CCD73&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=32