What weather should I choose for drying seeds?

Generally, seeds are dried in the sun for 2-3 days on sunny days. When the seeds are dried on the cement floor, care should be taken not to spread them too thin to avoid scalding the seeds. Generally, it is advisable to turn it every 2-3 hours, so that the seeds are heated evenly. Drying seeds before sowing can promote the physiological maturity of some medicinal seeds, accelerate the internal metabolism of seeds, improve the survival rate, germination potential and germination rate of seeds, and play a role in sterilization and detoxification.

Sundrying seeds can improve the permeability of seed coat, break the dormancy period of seeds and improve the activity of seed enzymes, thus improving the germination rate and germination potential of cotton seeds. After a winter storage, the temperature, humidity and air permeability of cotton seeds in different storage parts will be different, and some germs will be carried on the surface of the seeds. After being irradiated by ultraviolet rays from the sun, cotton seeds can kill some germs carried by themselves and alleviate diseases at seedling stage.

Function of drying seeds

Sun drying, that is, the measure of exposing seeds to the sun, is usually carried out after harvest or before sowing. Sundrying after harvest mainly reduces the water content of seeds to a safe water content range, which is beneficial to storage. Sun drying before sowing is mainly to improve the permeability of seed coat, eliminate harmful respiratory products in seeds, promote enzyme activity and after-ripening, and enhance the water absorption capacity of seeds.

So as to improve the germination rate and germination potential of seeds, and has certain disinfection and sterilization effects. Generally, we choose to sun for 2-3 days in sunny days, pay attention to spreading thinly and turning frequently, so that the seeds are heated evenly, prevent varieties from being mixed and suffering from mechanical damage, enhance the permeability of seed coat and enzyme activity, promote seed maturity, improve the germination rate and viability of seeds, and emerge early after sowing. It can also improve the water absorption capacity of seeds, kill some germs and ensure the quality of seeds.