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- Title
东北三省1987—2018年的种植业氮素投入与未来减施潜力.
- Authors
李柏霖; 焉莉; 王继岩; 高瑞雪; 郭黎卿
- Abstract
In the present study, northeast China (including Heilongjiang Province, Jilin Province and Liaoning Province) was selected as the study area. Firstly, the nitrogen application rate in 1987-2018 was investigated. Then, the nitrogen demand and nitrogen utilization rate were calculated based on the situation of 2018, and the nitrogen reduction potentials under short-term, mid-term, long-term scenarios were evaluated, respectively. It was shown that the nitrogen application rate in northeast China exhibited an overall increasing trend in 1987-2018. The nitrogen utilization rate in Heilongjiang Province was 157.11% in 2018, indicating high consumption of soil nitrogen; while the nitrogen utilization rate was 69.00% and 69.27% in Jilin Province and Liaoning Province, respectively, indicating tight balance of nitrogen input and output. Under short-term, mid-term and long-term scenarios, there was no nitrogen reduction potential in Heilongjiang Province. Under short-term scenario, the nitrogen reduction potential was 47.19% and 46.99% in Jilin Province and Liaoning Province, respectively. Under mid-term scenario, there was no nitrogen reduction potential in Jilin Province and Liaoning Province. Under long-term scenario, with application of organic fertilizers, the nitrogen reduction potential was 26.07% and 25.78% in Jilin Province and Liaoning Province, respectively.
- Subjects
JILIN Sheng (China); LIAONING Sheng (China); HEILONGJIANG Sheng (China); REDUCTION potential; NITROGEN in soils; FERTILIZER application; NITROGEN fertilizers; FERTILIZERS
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 4, p851
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.04.22