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首页> 外文期刊>Acta Horticulturae >A model-based decision support system for closed irrigation loop greenhouses.
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A model-based decision support system for closed irrigation loop greenhouses.

机译：基于模型的封闭式灌溉大棚温室决策支持系统。

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摘要

A decision support system (DSS) for managing greenhouse climate and crop fertigation was developed. It entails three modules: (i) a generic, modular substrate-plant-climate model designed to predict crop response to varying climate conditions, fertigation management, water quality and substrate characteristics, (ii) a management module that stores target dry matter and nitrogen accumulation functions and compares them with simulated results from the model, and (iii) a feedback control module that evaluates the quality of certain model predictions based on measurements inside the greenhouse. The objective of the DSS is to derive optimal greenhouse management rules for maintaining growth close to the target value with minimal intervention by the grower. Preliminary tests of the DSS indicate that the system is well calibrated to tomato growth in greenhouses in central Germany and has the potential for simulating tomato growth in closed irrigation loop greenhouses under arid zone conditions. The modular structure of the DSS allows the simple replacement of any component by a more sophisticated one when justified. As most greenhouse crops are C3 plants, it is likely that photosynthesis, transpiration, dry matter production (DMP) and nutrient and water uptake models can be adapted to crop-type by parameter modifications. The main differences among crops appear to be dry matter (DM) and nitrogen partitioning and root growth, which have to be well characterized before further refinement of the DMP components.
机译：开发了用于管理温室气候和作物施肥的决策支持系统（DSS）。它包含三个模块：（i）一个通用的模块化基质-植物-气候模型，旨在预测作物对不同气候条件，施肥管理，水质和基质特征的响应，（ii）一个存储目标干物质和氮的管理模块累积函数并将其与模型的模拟结果进行比较，以及（iii）反馈控制模块，该模块根据温室内部的测量值来评估某些模型预测的质量。 DSS的目标是获得最佳的温室管理规则，以在种植者最少干预的情况下保持生长接近目标值。 DSS的初步测试表明，该系统已针对德国中部温室中的番茄生长进行了很好的校准，并且具有在干旱地区条件下模拟封闭灌溉环路温室中的番茄生长的潜力。 DSS的模块化结构允许在合理的情况下用更复杂的组件轻松替换任何组件。由于大多数温室作物都是C3植物，因此光合作用，蒸腾作用，干物质生产（DMP）以及养分和水分吸收模型很可能可以通过参数修改来适应作物类型。作物之间的主要区别似乎是干物质（DM）和氮分配和根系生长，必须在进一步精制DMP成分之前对其进行充分表征。

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