评估不同的模型,以预测在缺水条件下胡植物的生长和发展
Jun Zhu1,2,3, Yuanda Zhang4, Guangxian Yang2,3
1Shangqiu Meteorological Bureau, Shangqiu, China.
Frontiers in plant science
|December 26, 2024
概括
为模拟干旱影响,制造了胡植物发展模型. 轻微的缺水可以加速增长,而严重的缺水则会延迟增长,为更好的水资源管理策略提供信息.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 干旱压力研究研究
背景情况:
- 干旱严重影响作物发展和产量.
- 准确的模拟模型对于优化水资源有限条件下的农业实践至关重要.
- 了解胡植物对不同缺水的反应对于可持续生产至关重要.
研究的目的:
- 开发和验证在干旱压力下胡 (Capsicum annuum) 植物发展的模拟模型.
- 评估缺水严重程度和持续时间对胡生理发育时间 (PDT) 的影响.
- 确定最佳的建模方法来预测控制水容量下的胡生长.
主要方法:
- 在"Sanying"胡上进行了实验,控制了水容量 (45-85%) 和暴露时间 (2-8天).
- 生理发育时间 (PDT),热效率和PAR (TEP) 以及成长度日 (GDD) 用于模拟.
- 使用分线,立方,makima,线性和最接近的插值方法来构建生长模型,分线验证显示出卓越的性能.
主要成果:
- 植物的发展受到干旱的严重程度和持续时间的重大影响;轻微的赤字加速,而严重的赤字延迟了发展.
- 生理发育时间 (PDT) 在模拟生长周期方面表现出高准确度 (R2:0.89-0.94).
- 在验证中,spline插值模型实现了最高准确度 (R2:0.96-0.97) 和最低误差 (RMSE,RE).
结论:
- 开发的基于PDT的模拟模型准确地预测了在干旱条件下胡的发展.
- 轻微的缺水可以被战略性地用来加速胡的发展.
- 最佳线模型为生产者提供了一种有价值的工具,以加强水资源管理和干旱抗灾策略.
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