PROBLEM TO BE SOLVED: To provide a hot-water disinfection method for a paddy rice seed which can increase a high-temperature resistance of the seed while enabling efficient hot-water disinfection.SOLUTION: A hot-water disinfection method for a paddy rice seed of the present invention includes: a drying step for decreasing a water content of the paddy rice seed； a storing step for storing the paddy rice seed with the water content thereof decreased in the drying step； and a hot-water treatment step for disinfection by soaking the seeds into hot water, the paddy seed being stored in the storing step and having the water content being within a predetermined range. The water content of the paddy rice seed stored in the storing step is detected, and the seeds with the water content exceeding the predetermined range is subjected to a high-temperature drying to decrease the water content thereof to be within the predetermined range. Then, the seeds of increased temperature due to the high-temperature drying is soaked into hot water in the hot-water treatment step.SELECTED DRAWING: Figure 1【課題】本発明は、種子の高温耐性を高めるとともに効率よく温湯消毒することができる水稲種子の温湯消毒法を提供することを目的とする。【解決手段】本発明の水稲種子の温湯消毒法は、水稲種子の水分含量を低下させる乾燥処理工程と、前記乾燥処理工程で水分含量が低下した水稲種子を保管する保管工程と、前記保管工程で保管した後の水稲種子であって、水分含量が所定範囲内の水稲種子を温湯に浸漬して消毒する温湯処理工程と、を含み、前記保管工程で保管した水稲種子の水分含量を検出し、該水分含量が前記所定範囲を超える水稲種子については、加温乾燥により水分含量を前記所定範囲内に低下させ、前記加温乾燥により穀温の上昇した水稲種子を前記温湯処理工程で温湯に浸漬することを特徴とする。【選択図】図１
