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Environ Sci Pollut Res Int. 2015 Dec;22(23):18508-18. doi: 10.1007/s11356-015-5277-x. Epub 2015 Sep 4.

Characteristics of nitrogen balance in open-air and greenhouse vegetable cropping systems of China.

Ti C1, Luo Y1,2, Yan X3.

Author information

1
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, People's Republic of China.
2
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
3
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, People's Republic of China. yanxy@issas.ac.cn.

Abstract

Nitrogen (N) loss from vegetable cropping systems has become a significant environmental issue in China. In this study, estimation of N balances in both open-air and greenhouse vegetable cropping systems in China was established. Results showed that the total N input in open-air and greenhouse vegetable cropping systems in 2010 was 5.44 and 2.60 Tg, respectively. Chemical fertilizer N input in the two cropping systems was 201 kg N ha(-1) per season (open-air) and 478 kg N ha(-1) per season (greenhouse). The N use efficiency (NUE) was 25.9 ± 13.3 and 19.7 ± 9.4% for open-air and greenhouse vegetable cropping systems, respectively, significantly lower than that of maize, wheat, and rice. Approximately 30.6% of total N input was accumulated in soils and 0.8% was lost by ammonia volatilization in greenhouse vegetable system, while N accumulation and ammonia volatilization accounted for 19.1 and 11.1%, respectively, of total N input in open-air vegetable systems.

KEYWORDS:

Ammonia volatilization; Groundwater pollution; Nitrogen input; Nitrogen leaching; Vegetable production

PMID:
26336846
DOI:
10.1007/s11356-015-5277-x
[Indexed for MEDLINE]

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