使用WHCNS-Veg模型在不同的温室蔬菜生产系统下建模命运和水和使用效率
Hongyuan Zhang1,2, William D Batchelor3, Kelin Hu2
1School of Agriculture, Ludong University, Yantai 264025, China.
Plants (Basel, Switzerland)
|May 25, 2024
概括
有机温室蔬菜生产系统显著提高了产量和营养使用效率,同时减少了气损失. 对于那些寻求可持续和生产性实践的农民来说,推使用这种系统.
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:
- 温室蔬菜生产系统 (GVPS) 需要优化水和 (N) 管理,以实现可持续性.
- 了解不同GVPS对产量,用水和气体的影响,对于有效的农业实践至关重要.
- 北中国的温室蔬菜田面临着平衡生产力与环境影响的挑战.
研究的目的:
- 量化评估传统 (CON),综合 (INT) 和有机 (ORG) 温室蔬菜生产系统的影响.
- 评估对蔬菜产量,土壤用水量和命运的影响.
- 为GVPS确定最佳的水和肥料管理实践.
主要方法:
- 从2013年到2015年在中国北方的泉州县进行了实地研究.
- 采用WHCNS-Veg模型来模拟四个生长季节的蔬菜生长,水动态和N命运.
- 分析了蔬菜产量,吸收,用水效率 (WUE),用效率 (NUE),酸盐漏和气态N损失.
主要成果:
- 酸盐漏 (11.5-59.4%) 和气态排放 (6.0-21.1%) 是GVPS.中的主要损失.
- 有机 (ORG) 系统显示出优异的性能:ORG > INT > CON对于产量,N吸收,WUE和NUE.
- 与CON相比,ORG显著增加了产量 (24.6%),N吸收 (24.2%),WUE (26.1%) 和NUE (89.7%),同时减少了酸盐出 (67.7%) 和气态N损失 (63.2%).
结论:
- 有机生产系统在蔬菜产量和营养使用效率上提供了显著的改进.
- 有机系统显著减轻了环境中的损失,包括酸盐漏和气体排放.
- 建议当地农民使用ORG系统,以提高温室蔬菜种植的可持续性和生产率.
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