PROBLEM TO BE SOLVED: To provide a feeding method and a feeding apparatus of carbon dioxide to plants, each enabling carbon dioxide to be efficiently taken in the chlorophyl of plants, causing photosynthesis, suppressing rise of a temperature in a greenhouse, and efficiently inhibiting outflow of carbon dioxide to the outside of a greenhouse. SOLUTION: This feeding method of carbon dioxide to plants comprises a carbonated water producing process of producing carbonated water through supplying carbon dioxide and water to an inline mixer placed between water supply pipes, and a carbonated water spraying process of spraying carbonated water produced in the carbonated water producing process into a greenhouse or plants in a greenhouse. COPYRIGHT: (C)2008,JPO&INPIT
