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首页> 外文期刊>HortTechnology >L-PEACH: a computer-based model to understand how peach trees grow.
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L-PEACH: a computer-based model to understand how peach trees grow.

机译：L-PEACH：一种基于计算机的模型，用于了解桃树如何生长。

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L-PEACH is a computer-based model that simulates the growth of peach [Prunus persica (L.) Batsch] trees. The model integrates important concepts related to carbon assimilation, distribution, and use in peach trees. It also includes modeling of the responses to horticultural practices such as tree pruning and fruit thinning. While running L-PEACH, three-dimensional (3D) depictions of simulated growing trees can be displayed on the computer screen and the user can easily interact with the model. Quantitative data generated during a simulation can be saved to a file or printed for visualization and analysis. L-PEACH is a powerful tool for understanding how peach trees function in the field environment, and it can be used as an innovative method for dissemination of knowledge related with carbohydrate assimilation and partitioning. In this study, we describe the version of L-PEACH that runs on a daily time-step (L-PEACH-d) and how users can run the model and interact with it. To demonstrate how L-PEACH-d works, different pruning and fruit thinning strategies were analyzed. Regarding pruning, model outputs showed 3D depictions of unpruned trees and pruned trees trained to a perpendicular V system. For the fruit thinning studies, we simulated different intensities and dates of fruit thinning in mature peach trees. Total simulated yield increased with crop load but the opposite was observed for average fruit weight. An optimal balance between simulated total yield and average fruit weight was obtained by leaving 150 fruit per tree. Simulating different dates of fruit thinning indicated that fruit weight at harvest was higher on earlier compared with later-thinned trees. The model indicates that fruit thinning should be therefore carried out early in the season to maximize fruit size. The simulation results demonstrate that L-PEACH-d can be used as an educational tool and facilitate the adoption of suitable cultural practices for efficient production.
机译：L-PEACH是一种基于计算机的模型，可以模拟桃[（L.）Batsch]树的生长。该模型集成了与桃树中碳同化，分布和使用有关的重要概念。它还包括对园艺实践（例如修剪树木和疏果）的响应进行建模。运行L-PEACH时，可以在计算机屏幕上显示模拟的生长树木的三维（3D）描绘，并且用户可以轻松地与模型进行交互。仿真过程中生成的定量数据可以保存到文件或打印以进行可视化和分析。 L-PEACH是了解桃树在田间环境中如何发挥作用的有力工具，可以用作传播与碳水化合物同化和分配有关的知识的创新方法。在本研究中，我们描述了按每日时间步长运行的L-PEACH版本（L-PEACH-d），以及用户如何运行模型并与之交互。为了演示L-PEACH-d的工作原理，分析了不同的修剪和疏果策略。关于修剪，模型输出显示未修剪树木和经过垂直V系统训练的修剪树木的3D描绘。对于水果稀疏研究，我们模拟了成熟桃树中水果稀疏的不同强度和日期。模拟总产量随农作物负荷的增加而增加，但平均果实重量却相反。通过在每棵树上留出150个果实，可以在模拟总产量和平均果实重量之间达到最佳平衡。模拟不同日期的稀疏果树表明，收获较早的树苗比后来稀疏的树苗更高。该模型表明，因此应在季节初进行果稀疏，以最大程度地扩大果实大小。仿真结果表明，L-PEACH-d可以用作教育工具，并有助于采用适当的文化习俗进行有效生产。

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