控制释放和常用尿素的混合应用可以有效地取代小麦-玉米旋转系统中的常用尿素吗? 一个基于长期实验的案例研究
Ling Zhang1, Wen-Tao Xue1, Hao Sun1
1Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Plants (Basel, Switzerland)
|December 23, 2023
概括
混合尿素 (BU) 的单次应用与普通尿素 (CU) 的产量相匹配,同时改善土壤健康并减少对环境的影响. 这种可持续的管理策略为作物生产提供了可比的利能力和生态系统效益.
科学领域:
- 农业学是一种农业学.
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- (N) 管理对于作物生产至关重要,混合尿素 (BU) 作为一个有前途的战略.
- 单个BU应用的长期可持续性和有效性与分割的常用尿素 (CU) 应用相比,需要进一步研究.
研究的目的:
- 为了评估一次性混合尿素应用的长期疗效,与分割的常用尿素应用相比.
- 评估混合尿素对作物产量,利用效率 (NUE),土壤特性,环境足迹和经济效益的影响.
主要方法:
- 在中国北方平原进行了一项长期实地实验.
- 将混合尿素 (BU) 的单次应用与以最佳N速率 (180公斤N ha-1) 的普通尿素 (CU) 的分割应用进行了比较.
- 评估的谷物产量,N吸收,NUE,土壤有机和碳库存,反应性N (Nr) 损失,温室气体 (GHG) 排放和经济效益.
主要成果:
- 混合尿素实现了与普通尿素相比的谷物产量和NUE.
- 在顶层0-20厘米的土壤层中,BU增加了12%的土壤有机和9%的土壤有机碳.
- 工业化设备使生命周期中的反应性损失和足迹减少了10%,温室气体排放和碳足迹减少了7%.
结论:
- 混合尿素的单次应用可以有效地替代长期用于小麦和玉米生产的普通尿素的分割应用.
- 混合尿素是一种可持续的管理策略,提供环境和经济优势.
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