Cultivation method of SOD-rich watermelons

The invention discloses a cultivation method of SOD-rich watermelons. The cultivation method comprises the following steps: a) fertilizer treatment; step b) sowing; step c) breeding; step d) seedbed management; step e) grafting; step f) transplanting; and step g) fertilization. According to the cultivation method, SOD improvement is conducted on the treated watermelon seedlings in the processes of sowing, breeding, seedbed management and fertilization of the watermelon seedlings, oxygen free radicals hindering growth and development in bodies can be eliminated, normal development of the melon seedlings can be kept, in the fruit development process, a certain amount of SOD is supplemented, the enzyme activity unit in fruits can be increased by 1-2 times, high quality and high yield are facilitated, SOD supplemented in the later stage of growth can enter cells in the fruits, is stored in vacuoles and can be conveniently absorbed by a human body, and the problems that existing lotus leaf tea is relatively simple