Key Techniques for Seedless Watermelon Cultivation and High-Yield Management Methods

Seedless watermelon cultivation techniques refer to a whole set of planting and management methods built around triploid seedless watermelons, covering germination promotion and seedling raising, transplanting, pollination and field management. Seedless watermelons are generally bred by crossing a tetraploid watermelon as the female parent with an ordinary diploid watermelon as the male parent; the fruit contains basically no fully developed seeds, making it convenient to eat with good market quality, and it is well received by the market and growers.

Compared with ordinary watermelons, triploid seeds have a thicker seed coat and poorly developed embryos, with weaker germination vigor; when raising seedlings, the seeds usually need to be soaked first to promote germination, then helped by cracking the shell, to increase the emergence rate. At the same time, seedless watermelons themselves have poorly developed pollen and poor natural fruit-setting ability, so in production, ordinary watermelons are often interplanted in a certain proportion as pollinator varieties, or bees are introduced to assist pollination, to ensure normal fruit set.

For field management, plots with convenient drainage and irrigation and suitable for crop rotation should be chosen; plastic film mulching should be used to raise soil temperature, with reasonable close planting, and timely pruning, vine pressing, fruit retention and fruit setting. Fertilization should use decomposed organic fertilizer as the base fertilizer, with split topdressing during the vine extension stage and the fruit swelling stage; maintaining a balanced water supply during the fruit swelling stage can reduce fruit cracking and hollow heart.

Common problems in actual planting include low germination rate, excessive vegetative growth of seedlings, fruit abortion, and white empty seeds appearing in the fruit, most of which are related to temperature regulation, insufficient pollination, or improper fertilizer and water management. As long as the key links of germination promotion and seedling raising, arranging pollinator varieties, and scientific water and fertilizer management are grasped, seedless watermelons can likewise achieve good yield and quality, and they are a common choice for adjusting the planting structure in many production areas.