The invention discloses a ground growing and vertical frame type combined cultivation method for watermelons, and belongs to the technical field of agricultural planting. The method comprises the following steps: step 1, constructing a
greenhouse; step 2, performing
soil preparation and fertilization; step 3, raising seedlings; step 4, determining planting spacing, and performing field planting ina suitable period; step 5, constructing a quadripod, performing
pruning and
vine guiding, performing
pollination, and performing watermelon reservation; step 6, performing
fertilizer and water management; step 7, preventing and controlling pests and diseases; and step 8, performing timely harvesting. The method provided by the invention utilizes a
greenhouse frame to keep warm and take shelter from rain, and avoids the problem that
pollination is affected in the flowering and fruit-setting periods of the watermelons because of
overcast and rainy low-temperature weather, so that normal
pollination and fruit setting can be performed on the watermelons; the ground growing and vertical frame type combined cultivation is used, watermelon vines are guided onto the
greenhouse frame in a verticalframe type; after the watermelons set fruits, the watermelons can be put on the ground without the need of hanging the watermelons, so that leaf areas of
photosynthesis of the watermelons are increased in a limited space, and growth and expansion after the watermelons set the fruits are facilitated; and meanwhile, the planting density of the watermelons is increased, and the yield of the watermelons, the use ratio of land and
economic benefits of watermelon farmers are increased.