估计中国大米种植系统中,和肥率的值
Yingxia Liu1,2, Wencheng Ding1, Ping He1
1Ministry of Agriculture and Rural Affairs Key Laboratory of Plant Nutrition and Fertilizer, State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China.
Frontiers in plant science
|September 27, 2024
概括
这项研究确定了中国大米田中,和的施肥值,以平衡产量和环境安全. 它建议优化应用率,考虑到草回收和有机替代可持续农业.
科学领域:
- 农学和土壤科学 农学和土壤科学
- 环境科学 环境科学
- 农业化学 农业化学
背景情况:
- 施肥率对于农作物产量,土壤健康和农业环境风险管理至关重要.
- 优化营养应用对于可持续的米生产至关重要,特别是在中国.
研究的目的:
- 开发一种方法来估计 (N), (P) 和 (K) 在中国大米 (Oryza sativa L.) 的肥料值.
- 为平衡的施肥提供指导,以支持产量目标,同时最大限度地减少对环境的影响.
主要方法:
- 利用来自中国大米田的6792个观测数据集.
- 应用了一种基于部分营养平衡和产量允许范围的方法来确定受精值.
- 计算不同水种植系统的最低和最高N,P和K应用率.
主要成果:
- 确定单个,中期,早期和晚期大米季节的N,P和K受精门.
- 在将草返回田地时,确定了对肥料需求 (N,P,K) 的潜在减少.
- 建议的平均应用量 (194公斤N ha-1,105公斤P2O5 ha-1,157公斤K2O ha-1),以及有机N替代和缓释N的突出好处.
结论:
- 该研究提供了关键的受精限制指标,用于在米生产中实现均衡的受精.
- 研究结果支持通过优化营养管理实现农业生产率和环境保护之间的平衡.
- 建议整合有机残留物和高效的肥料类型,以提高营养素使用效率和可持续性.
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