A coated rice seed formed having a coating layer, wherein the coating layer includes zinc oxide and an alpha starch having a degree of swelling of 10-48 mL/g in a 2% aqueous suspension at 20 DEG C.一種塗覆水稻種子,其係具有塗覆層而成之塗覆水稻種子,前述塗覆層係包含2%水懸濁液在20℃之膨潤度為10~48mL/g的範圍之α澱粉、與氧化鋅。