在温暖和潮湿的气候下,优化了春季玉米的灌和施肥,这是在中国一个半干旱地区
Hongjuan Zhang1, Rui Zhang1, Lina Sun2
1College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, China.
Frontiers in plant science
|July 17, 2025
概括
优化中国春季玉米的灌和肥料.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 农业学是一种农业学.
背景情况:
- 在半干旱的中国,春季玉米的生产面临着不高效的灌和肥料做法带来的挑战,限制了产量和资源利用.
- 现有的研究往往缺乏长期气象数据集成,以优化这些关键的农业投入.
研究的目的:
- 评估和优化中国半干旱地区春季玉米的灌和肥料管理策略,使用经过验证的作物模型.
- 确定最佳的肥料组合和灌配额,以最大限度地提高产量和资源使用效率.
主要方法:
- 使用根区水质模型2 (RZWQM2) 校准和验证了2022-2023年的现场数据.
- 模拟各种灌水平和肥料处理,包括和有机肥料组合.
- 评估模型性能,使用统计指标来评估土壤含水量,生物质,谷物产量和营养水平.
主要成果:
- RZWQM2模型在模拟春季玉米生长和营养动态 (例如,土壤含水量,产量,N/NH4+) 方面表现出高准确度.
- 在不同的灌场景中,以60%的和40%的有机肥料组合实现了最佳产量.
- 250 m3 hm-2的灌配额导致了更高的用水效率 (WUE),灌用水效率 (IWUE) 和部分因素生产率 (PFP).
结论:
- 该研究提供了一种经过验证的建模方法,用于优化半干旱地区的农业实践.
- 和有机肥料的平衡应用,加上优化灌,是提高春季玉米生产率和可持续性的关键.
- 结果为开发有效和可持续的灌和肥料战略为区域作物生产提供了实际指导.
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