Shell breaking-free batch sowing and seedling raising method of seedless watermelons

Abstract

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%.

Description

technical field [0001] The invention relates to the technical field of sowing seedlings of seedless watermelons, in particular to a method for sowing seedlings of seedless watermelons in batches without breaking shells. Background technique [0002] my country's watermelon planting area and output rank first in the world. The planting area of ​​seedless watermelon has expanded year by year in recent years, and the output has also increased steadily. Due to the serious occurrence of watermelon wilt in repeated cropping cultivation, grafting cultivation has become the main method for the prevention and control of wilt. technical measures. Seedless watermelon seeds are triploid, with thick seed coats, deformed cotyledons, and weak vigor, resulting in low seed germination rate, low seedling rate and slow seedling growth, which has a great impact on the production of seedless watermelon. At present, the method of knocking open the seed coat (artificially breaking the shell) is of...

AI Technical Summary

Problems solved by technology

Seedless watermelon seeds are triploid, with thick seed coat, deformed cotyledons, and weak vigor, resulting in low seed germination rate, low seedling rate and slow seedling growth, which has a great impact on the production of seedless watermelon

At present, the method of knocking open the seed coat (artificially breaking the shell) is often used in production to improve the germination rate of the seeds, but this method is easy to cause damage to the embryo; especially when the seedless watermelon is grafted and raised, it is necessary to carry out seedless watermelon seeds. Batch germination and sowing seedlings consume a lot of labor and time, and due to technical reasons, the seed utilization rate is only about 50%, and the work efficiency is low, which cannot meet the needs of large-scale and industrialized production of modern agriculture

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