PROBLEM TO BE SOLVED: To provide a foam-spraying freezing method that can prevent frost damage to crops on the theory of a water-spraying freezing method instead of a water-spraying freezing method that requires an abundance of water even in such an area with little water that has to rely on an anti-frost fan.SOLUTION: The present invention provides a foam-spraying freezing method in which moisture-comprising foam is sprayed and attached on a tea bud as a crop, and the tea bud is protected by the latent heat generated when the moisture in the foam freezes.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】防霜ファンに頼らざるを得ないような水が少ない地域でも、多量の水を必要とする撒水凍結法に代わって撒水凍結法の理論で農作物の凍霜害を防止できる撒泡凍結法を提供する。【解決手段】農作物としての茶芽に、水分を含む泡を撒布して付着させ、この泡中の水分が凍結する際に発生する潜熱により茶芽を保護する撒泡凍結法である。【選択図】図1
