The invention provides a shell breaking-free batch
sowing and
seedling raising method of seedless watermelons. The method comprises the following steps: soaking seedless watermelon seeds in a 0.02 g / L
sodium surfactin and 1.5 g / L
potassium sulfate mixed solution for 6 h, scrubbing the surface
mucus of the seeds by using
lime, cleaning the seeds, and air-
drying the seeds until the
water content is 50-55%; wrapping the seeds with a cotton
yarn cloth having a weight of 750 g / m<2> and a
water content of 175-200% according to a seed density of 25,000-30,000 grains / m<2>, and accelerating the
germination of the seeds at 32 DEG C; preparing a matrix from
peat with the
fiber length of 0-10 mm and
perlite with the particle size of 2-4 mm according to a volume ratio of 1:1, and regulating the
water content of the matrix to 55-60%;
sowing the
germination accelerated seedless watermelon seeds according to a density of 3500-4000 grains / m<2>, and germinating the seeds at 32 DEG C; and supplementing water to the matrix in an ebb-and-flow
irrigation manner when 50% of the seeds grow out of soil. Compared with routine artificial shell breaking and
germination accelerating methods, the shell breaking-free batch
sowing and
seedling raising method of seedless watermelons has the following advantages: the germination rate has no difference, and reaches 85% or above, the emergence rate reaches 93.1% and is increased by 10.2%, the
grafting utilization rate reaches 88.4% and is increased by 17.1%, the
seedling rate reaches 95.1% and is increased by 6.6%, and the seed
utilization rate reaches 78.3% and is increased by 26%.