Fixing device for grafting of mini watermelons and seedbed comprising fixing device

The invention discloses a fixing device for grafting of mini watermelons and a seedbed comprising the fixing device. The fixing device for grafting of the mini watermelons comprises a first clamping rod, a second clamping rod and an elastic piece. The first clamping rod is connected with a first clamping part. The second clamping rod is hinged to the first clamping rod and fixedly connected with a second clamping part. And the elastic piece is used for enabling the first clamping part and the second clamping part to have a tendency of approaching each other. The first clamping part and the second clamping part are respectively provided with a binding belt, and a grafted seedling of a mini watermelon for fixing is clamped between the two binding belts. A plurality of medicine spraying holes are formed in the second clamping part, and the medicine spraying holes are communicated with a supply source used for supplying medicine liquid. Adsorption pieces are arranged on the opposite faces of the first clamping pa