Countermeasure to heat using the long service life optical film for agriculture with function to prevent heat ray transmission

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450037
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticultural science
• Research Institution: Kochi University
• Principal Investigator: NIHIMURA Yasuyo 高知大学, 教育研究部自然科学系農学部門, 准教授 (20435134)
• Research Collaborator: ARUGA Hiroshi ; FUKUMOTO Yasufumi
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 高温対策 / 熱線遮断フィルム / 高機能性フィルム / 施設園芸 / 光制御 / 園芸作物

Outline of Final Research Achievements

Horticultural crops are cultivated in greenhouses almost year-round, including during periods of high temperature. However, high temperatures in a greenhouse can have negative effects on plants. Therefore, measures to counter heat are becoming an urgent issue. However, the common method of using shading material decreases the amount of light available for photosynthesis. In this study, we examined the influence of a film that limits near-infrared light transmission without reducing the transmission of visible light to the cultivation environment and crops. This heat-barrier film was used during periods of high temperature. While the temperature in the greenhouse was not affected, the soil and plant temperatures decreased, and the yields of crops such as eggplant and paprika increased.
The film was a valuable countermeasure to heat, but it is necessary to be careful when using the film year-round, because it might decrease the crop yield during very cold periods.

Free Research Field

農学