| 东北三省1987—2018年的种植业氮素投入与未来减施潜力 |
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| 引用本文： | 李柏霖,焉莉,王继岩,高瑞雪,郭黎卿.东北三省1987—2018年的种植业氮素投入与未来减施潜力[J].浙江农业学报,2022,34(4):851. |
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| 作者姓名： | 李柏霖 焉莉 王继岩 高瑞雪 郭黎卿 |
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| 作者单位： | 1.吉林农业大学 资源与环境学院,吉林 长春 1301182.生态环境部环境规划院 总量控制与排放交易研究中心,北京 100012 |
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| 基金项目： | 国家重点研发计划(2017YFD0201804);吉林省自然科学基金(20170101004JC) |
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| 摘 要： | 以东北三省(黑龙江、吉林、辽宁)为研究区,先分析其1987—2018年的化肥氮素投入情况,然后从作物养分需求出发,以2018年为基准,评估东北三省的作物需氮量和氮肥利用率,并对短期、中期、长期情景下的化肥氮素减施空间进行预测。结果表明,1987—2018年,东北三省的化肥氮素投入量总体呈现上升趋势。基于平衡法测算,2018年黑龙江省的氮肥利用率高达157.11%,土壤中的氮素严重耗竭,而吉林省和辽宁省的氮肥利用率分别为69.00%和69.27%,尚处于平衡状态。在短期、中期和长期情景下,黑龙江省的化肥氮素均无减施空间。在短期情景下,吉林省和辽宁省分别有47.19%和46.99%的减施空间;在中期情景下,吉林省和辽宁省可保持现有的施氮量不变;在长期情景下,若采用有机肥部分替代化肥,吉林省和辽宁省的化肥氮素减施空间分别为26.07%和25.78%。
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| 关 键 词： | 化肥减施 作物养分需求 氮肥 |
| 收稿时间： | 2021-03-19 |
Nitrogen application rate and reduction potential in northeast China in 1987-2018 |
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| LI Bolin,YAN Li,WANG Jiyan,GAO Ruixue,GUO Liqing.Nitrogen application rate and reduction potential in northeast China in 1987-2018[J].Acta Agriculturae Zhejiangensis,2022,34(4):851. |
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| Authors: | LI Bolin YAN Li WANG Jiyan GAO Ruixue GUO Liqing |
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| Affiliation: | 1. College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China
2. Research Centre for Total Control and Emission Trading, Environmental Planning Institute, Ministry of Ecology and Environment, Beijing 100012, China |
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| 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. |
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| Keywords: | chemical fertilizer reduction crop nutrient demand nitrogen fertilizer |
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