| Cite this article: | 郑利剑,马娟娟,郭向红,等.叶片膨压探针诊断植物体水分状况原理及应用进展[J].灌溉排水学报,0,():-. |
| Zheng Lijian,Ma Juanjuan,Guo Xianghong,et al.叶片膨压探针诊断植物体水分状况原理及应用进展[J].灌溉排水学报,0,():-. |
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| Review of the principle and application online-monitoring of plant water statues using leaf patch clamp pressure probe technology |
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Zheng Lijian, Ma Juanjuan, Guo Xianghong, Sun Xihuan
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College of Water Resource Science and Engineering, Taiyuan University of Technology
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| Abstract: |
| Precision irrigation relies on an accurate perception of plant water statues. In view of the differences in the applicability, convenience and stability of plant-based sensors, it is particularly important to explore a new method that is simple to operate, convenient for wireless continuous monitoring, and can coupling water information of leaf stomata and plant organs at the same time. The non-invasive and in-situ leaf patch clamp pressure probe (LPCP) technology allows for continuous monitoring of plant leaf turgor pressure over long periods. Understanding the principle and application of the magnetic probe in the plant water diagnosis can expect highly interesting developments in plant water status in the future. The LPCP measures the attenuated pressure of a leaf patch in response to a constant clamp pressure, and has become a new versatile method in plant water status diagnosis with high precision and sensitivity. The application of LPCP technology to monitor plants stomatal physiology and water status, then to guide irrigation on this basis, has become a hot research topic in recent years. On the basis of reviewing the existing methods of plant water status diagnostic, the basic principle, installation strategy and derivative parameters selection of LPCP technology were summarized in this paper. Combined with the results of leaf turgor monitoring on drip irrigation celery, we analyzed the relationship between turgor changes, environmental factors and plant water physiological parameters to explain the diagnostic mechanism. Finally, the main problem existed in the application of LPCP technology was that it was still in the stage of exploring the diagnostic mechanism, which lead to fewer related practical field irrigation applications. Further studies on canopy scale expansion, prediction of multi-environmental factors and evaluation of multi-source continuous indicators were needed, and the research focus should be shifted from exploring the mechanism of plant physiological feedback to developing rational irrigation strategies. |
| Key words: Leaf patch clamp pressure probe technology; irrigation; water relations; stomatal response; water potential |
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