A seedless watermelon seedling-free batch sowing seedling raising method

Abstract

The invention provides a seedless watermelon seedling-raising method in batches without shell breaking. The steps are: soak the seedless watermelon seeds in a solution of "0.02g / L subtilisin fetal sodium + 1.5g / L potassium sulfate" for 6 hours, and rub the surface of the seeds with lime Wash the mucus, and air-dry until the water content of the seeds is 50%-55%; according to the seed density, 25-30 thousand grains / m 2 , with a weight of 750g / m 2 Wrap the seeds in cotton gauze with a water content of 175%-200%, and place them at a temperature of 32°C to accelerate germination; use peat with a fiber length of 0-10mm and perlite with a particle size of 2-4mm to prepare a matrix at a volume ratio of 1:1, and adjust the content of the matrix. The water content is 55-60%; the seedless watermelon seeds after germination are based on the density of 0.35-0.4 million grains / m 2 For sowing, the germination temperature is 32°C; when 50% of the seeds are unearthed, the substrate is replenished with tidal irrigation. Compared with the conventional "artificial breaking of shells and accelerated germination method", the seedless watermelon method of the present invention has no difference in germination rate, which reaches more than 85%, the emergence rate reaches 93.1%, which is increased by 10.2%, and the grafting utilization rate reaches 88.4%. , increased by 17.1%, the seedling rate reached 95.1%, increased by 6.6%, and the seed utilization rate reached 78.3%, 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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