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

Environmental Science and Pollution Research International
Chaopu TiXiaoyuan Yan

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.

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Citations

May 28, 2016·Environmental Science and Pollution Research International·Yaxing ShiHao Chen
Sep 6, 2018·Environmental Science and Pollution Research International·Xiaozhong WangXinping Chen
Dec 14, 2018·Environmental Science and Pollution Research International·Huaiwei SunYuanfeng Qiu
Mar 20, 2020·Environmental Science and Pollution Research International·Xinlu BaiJianbin Zhou

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