|Table of Contents|

Ammonia Emission From Outdoor Cabbage Soil in Beijing Area Based on Different Nitrogen Application Rate(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年13
Page:
140-147
Research Field:
Publishing date:

Info

Title:
Ammonia Emission From Outdoor Cabbage Soil in Beijing Area Based on Different Nitrogen Application Rate
Author(s):
MA Xiaoyan1; WANG Junling2; GUO Xiurui1; HAN Yuhua2
(1.College of Environmental and Energy Engineering,Beijing University of Technology/Key Laboratory of Beijing on Regional Air Pollution Control,Beijing 100124;2.Beijing Municipal Research Institute of Environmental Protection,Beijing 100037)
Keywords:
amount of nitrogen applied; outdoor cabbage; ammonia volatilization; ammonia emission flux
PACS:
-
DOI:
10.11937/bfyy.20164671
Abstract:
The soil of open cabbage was used as material,the characteristics of soil ammonia volatilization in different stages of cabbage were studied under its different nitrogen application scenarios in Beijing by the means of filed in site dertermination.The results showed that,ammonia volatilization in cabbage soil occurred mainly within 1—3 weeks after fertilization,the period of accumulated ammonia volatilization was 18 days in basal manure after fertilization and 7 days top-dressing.In the first 4 days after fertilization,the ammiona emission flux decreased gradually;after the planting and irrigation,the ammonia flux of each scenario increased significantly,the first emission peak appeared on the 5—6 days after application of base fertilizer.The peak flux of soil ammiona emission appeared in the first day the first top-dressing；the second top-dressing was influenced by irrigation and temperature,and the peak of ammiona emission flux appeared on the third day.Soil ammonia emissions total amounts of cabbage under its different nitrogen application scenarios was 7.789-39.324 kg?hm-2.With the increase of nitrogen application rate,and ammonia cumulative discharge rate of 5.62%-6.78%.Appropriate application of nitrogen fertilizer could increase the yield of cabbage,but excessive application of nitrogen fertilizer would not only increase cabbage yield,but also increase ammonia volatilization.

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Last Update: 2017-07-18