Watermelon seeds swell through water absorption, germinate, seedlings emerge, seed coats fall off, cotyledons expand, and the first true leaf (two leaves and one heart) are revealed as the germination period.
Watermelon seeds must first absorb water to germinate and make the seeds change from dormant state to germinating state. When the water absorption reaches 65% to 75% of the dry seed weight, the protoplasm of the storage material in the seed begins to change from gel to sol state, and nutrients The macromolecular state, such as starch, protein, fat, etc., is transformed into small molecular substances such as monosaccharides, amino acids, and fatty acids that can be easily absorbed to provide energy for the seed buds to unearth. In this process, if the water supply is too low, it cannot meet the needs of the internal physiological activities of the seeds, can not germinate normally, or even "dry buds"; too much water supply will make the seeds reach a supersaturated state, the seed coat has poor air permeability, and affect oxygen supply. Easy to cause rotten seeds.
Watermelon mainly consumes the nutrients stored in the seeds during the germination period, so the absolute weight (fullness) of the seeds and the storage life of the seeds have an important influence on the germination rate and the quality of sprouts. The viability of watermelon seeds decreases with the increase in the storage life of the seeds. Although the useful life of the seeds is 5-7 years, the germination rate of the seeds of 1 to 3 years is high and the germination vigor is neat.
The length of the germination period of watermelon mainly depends on the height of the ground temperature: high ground temperature germinates quickly, and low ground temperature germinates slowly. The ground temperature is between 15 and 20 ℃, and the germination period takes 7 to 13 days; when the ground temperature is 25 to 30 ℃, the seedlings can emerge within 3 to 4 days. When raising watermelon seedlings in the low temperature season in early spring, listen to and watch the weather forecast to ensure that there are 6-7 consecutive sunny days after sowing, and the shed film is tightly warmed; fire channels and grounds should be used in severe weather such as cold currents, rain, snow, and haze. Heating equipment such as hot wire and hot blast stove raises the ground temperature so as not to affect the emergence of seedlings due to long-term low temperature and high humidity.
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Manual Massage Foot Spa Massager
A manual massage Foot Spa Massager is a device designed to provide a relaxing and therapeutic foot massage. It is a manually operated handheld device, which means it does not require electricity or batteries to operate. The massager is made up of several parts, including the handle, rollers, and knobs.
To use the manual massage foot spa massager, you simply place your foot on a flat surface and apply the massager to the soles of your feet. The rollers and nodules stimulate the nerves and muscles in the foot, providing a deep tissue massage that helps relieve tension and pain.
The massager is small and lightweight, so you can easily take it with you wherever you go. It's also easy to clean, just wipe with a damp cloth after each use.
Overall, the Manual Massage Foot Spa Massager is a great option for those who are looking for an easy and effective way to relax and soothe their feet. It's affordable, easy to use, and can provide a range of health benefits, including improving circulation, reducing stress, and relieving foot pain and discomfort.
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