NITROUS OXIDE EMISSIONS AND ITS INFLUENCING FACTORS INMAIZE FIELD

Authors

  • Yuzhou Jiang Institute of Agricultuwal Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China , Key Laboratory of Eco-environment and Leaf Tobacco Quality, CNTC, Beijing 100081, China
  • Qingli Liu Institute of Agricultuwal Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China , Key Laboratory of Eco-environment and Leaf Tobacco Quality, CNTC, Beijing 100081, China
  • Zhihong Li Institute of Agricultuwal Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China , Key Laboratory of Eco-environment and Leaf Tobacco Quality, CNTC, Beijing 100081, China
  • Yungui Zhang Institute of Agricultuwal Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China , Key Laboratory of Eco-environment and Leaf Tobacco Quality, CNTC, Beijing 100081, China
  • Yan Zou (Corresponding Author) Tobacco Science Institute of Guizhou Province, Guiyang 550000, China
  • Jingwei Zhu Tobacco Science Institute of Guizhou Province, Guiyang 550000, China
  • Junxiong Shi Tobacco Science Institute of Guizhou Province, Guiyang 550000, China
  • Heng Zhang Tobacco Science Institute of Guizhou Province, Guiyang 550000, China

Keywords:

N 2 O Emission, C/N Ratio, Yellow Cornfield, China, Environmental Factors.

Abstract

The experiment was conducted to explore the impact of different environmental factors on nitrous oxide (N 2 O) emission flux after application of fertilizer. An experiment was conducted in 2016 to determine the N 2 O emissions in maize yellow soil. There were three treatments: No fertilizer + Crop rotation for comparison (CK); inorganic fertilizer + Crop rotation (CR); inorganic fertilizer + Continuous cropping (CC). Therefore, the experiment was designed to study the variation features of N 2 O emissions in maize-growing season and analyze the impact of soil moisture, temperature and nitrate nitrogen content on N 2 O emissions after application of Crop rotation and Continuous cropping. The results indicated that: N 2 O emissions reached two peaks in maize-growing season, which mainly occurred in 1-11 days after application of Crop rotation and Continuous cropping; the cumulated amount of N 2 O emissions within 15 days after application of Crop rotation and Continuous cropping accounted for 22.16%-38.23% of the cumulated amount of N 2 O emissions during the whole growing season and total emission amount during growth period. Meanwhile, the average N 2 O emission flux of the three treatment process could be ranked as CC ＞ CR ＞ CK, which shall be measured as 0.056, 0.010 and 0.007 mg·m-2·h-1 respectively; The total N 2 O emissions of soil after application of Continuous cropping were improved for 7 times respectively as compared with single application of Crop rotation. According to relevant analysis, N 2 O emission flux of maize yellow soil was mainly related with the nitrate nitrogen content (P<0.05) in farmland, from which it could be concluded that N 2 O emission in maize yellow soil was free from any influence of local soil moisture content, air temperature or soil temperature. Moreover, N 2 O emissions of maize yellow soil were increased after application of Continuous cropping. Therefore, an important way to reduce N 2 O emissions of maize yellow soil was to control the application reasonable Crop rotation.

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Published

2019-10-30

Issue

Vol. 1 No. 1 (2019)

Section

Articles

How to Cite

Jiang Yuzhou, Liu Qingli, Li Zhihong, Zhang Yungui, Zou Yan , Zhu Jingwei, Shi Junxiong, Zhang Heng. Nitrous oxide emissions and its influencing factors inmaize field. Eurasia Journal of Science and Technology. 2019, 1(1): 26-31.