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- Title
Effects of elevated atmospheric CO<sub>2</sub> on paddy soil nitrogen content during rice season.
- Authors
Xiao-zhi Wang; Hai-jin Zhang; Wei Sun; Ke Feng; Jian-guo Zhu
- Abstract
Taking the China rice/wheat FACE ( Free-Air Carbon Dioxide Enrichment) as a platform, this paper studied the effects of elevated CO2 on the NH4+ -N and NO3--N contents at different depths of paddy soil in rice season. Under elevated CO2, the NH4+ -N content in plough layer increased at early growth stage but decreased at late growth stage, and the soil NO3- -N content at the depths 5, 15, 30, 60, and 90 cm increased by 46. 5%, 36. 8%, 23. 3%, 103. 7%, and 42. 7%, respectively, with a significant increase occurred at the depths 60 cm (P<0. 01) and 90 cm (P< 0. 05), compared with the control.
- Subjects
CARBON dioxide enrichment of greenhouses; EFFECT of atmospheric carbon dioxide on plants; PLANTING; RICE; WHEAT; PLANT growth
- Publication
Yingyong Shengtai Xuebao, 2010, Vol 21, Issue 8, p2161
- ISSN
1001-9332
- Publication type
Article