ABSTRACT Decrease in photosynthesis results from high leaf temperature, photosynthetic photon flux density, and UV-B. Here, we investigated whether a reflective material (kaolin) could improve photosynthetic performance and yield of clementine (Citrus clementina Hort. ex Tan., “Comune” cultivar) in southern Italy. Kaolin was sprayed on tree canopies every month during two summers; gas exchange, fluorimetry, and qualitative and productive parameters were measured. Kaolin increased the total average yield per tree and improved fruit color. PCA indicated that the best performances were obtained with kaolin in the last harvest. Kaolin affected the final fruit price by 3%, justifying its use.

中文翻译：

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喷洒反光材料的柑橘树（Citrus Clementina Hort. Ex Tan.）生产性能的提高

摘要 高叶温、光合光子通量密度和 UV-B 会导致光合作用降低。在这里，我们研究了反射材料（高岭土）是否可以提高意大利南部柑橘（Citrus clementina Hort. ex Tan.，“Comune”品种）的光合性能和产量。两个夏天，每个月都会在树冠上喷洒高岭土；测量了气体交换、荧光法以及定性和生产参数。高岭土提高了每棵树的总平均产量并改善了果实颜色。PCA 表明，在最后一次收获时使用高岭土获得了最佳性能。高岭土对最终水果价格的影响为 3%，证明其使用是合理的。