Nitrous oxide emissions from fertilized upland fields in Thailand

被引:16
|
作者
Watanabe, T
Chairoj, P
Tsuruta, H
Masarngsan, W
Wongwiwatchai, C
Wonprasaid, S
Cholitkul, W
Minami, K
机构
[1] Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki 305, Japan
[2] Dept Agr, Bangkok 10900, Thailand
[3] Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 305, Japan
[4] Nakhon Sawan Field Crop Res Ctr, Amphoe Tak Fa 60190, Nakhon Sawan, Thailand
[5] Khon Kaen Field Crop Res Ctr, Khon Kaen 40000, Thailand
[6] Chiang Mai Field Crop Res Ctr, Chiang Mai 50290, Thailand
关键词
nitrous oxide; global warming; nitrogen fertilizer; nitrification; the Tropical Zone;
D O I
10.1023/A:1009764421174
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Nitrous oxide (N2O) emission from fertilized maize fields was measured using a closed chamber at four experimental sites in Thailand. The average measured N2O flux from unfertilized plots through crop season was 4.16 +/- 1.52, 5.05 +/- 1.65, 5.25 +/- 1.68 and 6.74 +/- 2.95 mu g N2O-N m(-2) h(-1), at Nakhon Sawan, Phra Phutthabat, Khon Kaen and Chiang Mai, respectively. Increased N2O emissions by the application of nitrogen fertilizer were 0.22-0.44, 0.19-0.38%, 0.12-0.24 and 0.08-0.15% of the applied N, respectively. Compared to other data, N2O emission rate to applied nitrogen was not significantly different between the data of Thailand and the Temperate Zone.
引用
收藏
页码:55 / 65
页数:11
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