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首页> 外文期刊>Photochemistry and Photobiology: An International Journal >Spectral properties of selected UV-blocking and UV-transmitting covering materials with application for production of high-value crops in high tunnels
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Spectral properties of selected UV-blocking and UV-transmitting covering materials with application for production of high-value crops in high tunnels

机译：选定的阻隔紫外线和透过紫外线的覆盖材料的光谱特性及其在高隧道中生产高价值农作物的应用

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摘要

The spectral properties of selected UV-blocking and UV-transmitting covering materials were characterized by means of a UV-VIS spectroradiometer or a UV-VIS spectrometer to provide researchers and growers with guidelines for selecting suitable materials for use in studying the effects of ambient solar UV radiation on the production of tomatoes and other high-value crops in high tunnels. A survey was made of a wide range of plastic covering materials to identify commercially available products that had the desired characteristics of transmitting high levels of photosynthetically active radiation and of being stable under ambient solar UV radiation. The study was focused on evaluating films that either blocked or transmitted UV wavelengths below 380 nm to determine comparative growth, yield and market quality and to provide a tool for integrated pest management. Based on this survey, two contrasting covering materials of similar thickness (0.152 mm) and durability (4-year polyethylene), one a UV-blocking film and the other a UV-transmitting film, were selected and used to cover two high tunnels at Beltsville, MD. Spectroradiometric measurements were made to determine comparative spectral irradiance in these two high tunnels covered with these materials and under ambient solar UV radiation. Comparative measurements were also made of selected glass and plastic materials that have been used in UV exclusion studies.
机译：通过紫外线可见分光光度计或紫外线可见分光光度计对选定的阻挡紫外线和透过紫外线的覆盖材料的光谱特性进行表征，为研究人员和种植者提供指导，以选择适合的材料用于研究环境太阳能的影响。在高高的隧道中西红柿和其他高价值农作物生产中的紫外线辐射。对各种各样的塑料覆盖材料进行了调查，以鉴定具有期望的特性的商品，这些商品具有传递高水平的光合活性辐射并在环境太阳紫外线辐射下稳定的特性。这项研究的重点是评估能阻挡或透射低于380 nm的紫外线波长的薄膜，以确定比较的生长，产量和市场质量，并为病虫害综合治理提供工具。根据这项调查，选择了两种具有相似厚度（0.152毫米）和耐用性（4年聚乙烯）的对比覆盖材料，一种是防紫外线膜，另一种是紫外线透射膜，并用于覆盖两个高通道。马里兰州贝尔茨维尔。进行了光谱辐射测量，以确定在这两个覆盖有这些材料的高隧道中以及在环境太阳紫外线辐射下的比较光谱辐照度。还对选定的玻璃和塑料材料进行了比较测量，这些材料已用于紫外线排除研究。

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