通过盐沿海地区的作物用水优化灌 - - 在中国黄河三角洲进行现场数据分析
Jing Li1, Deyao Liu1,2, Yitao Zhang1
1Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Plants (Basel, Switzerland)
|September 1, 2023
概括
沿海农田的用水对于保护至关重要. 这项研究发现作物系数 (KC) 比粮农组织的值要低得多,玉米和的用水效率更高,为可持续的水资源管理提供了见解.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 沿海地区的淡水稀缺性限制了农业生产率.
- 了解作物用水的使用对于有效的节水战略至关重要.
- 盐水压力对沿海生态系统的土壤植物系统产生重大影响.
研究的目的:
- 描述沿海地区盐水条件下的土壤植物用水情况.
- 为了确定不同作物旋转的作物系数 (KC).
- 优化沿海农田的水资源管理实践.
主要方法:
- 在中国黄河三角洲进行了密集的观测实验.
- 用水过程和作物系数的量化 (KC).
- 评估盐应激对作物用水消耗的影响.
主要成果:
- 在整个作物循环期间,浅层地下水并没有对土壤水产生影响.
- 对于小麦-玉米,小麦-麦和小麦-大豆轮换,KC值远低于粮农组织的估计.
- 与沿海农田的大豆相比,玉米和的用水效率更高.
结论:
- 确定了水和盐应激管理的关键时期.
- 提供了沿海农业节水和盐度控制的建议.
- 提供了关于可持续沿海农田开发和应对全球粮食安全挑战的见解.
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