How to deal with Astragalus seed before planting

How to deal with the seeds of astragalus can be planted? Please introduce the following astragalus seed treatment methods for reference: 1, water temperature change soaking seeds: a few days before sowing, soak in 40 ℃ warm water during the day, change cold water at night, deal with it continuously for 3 days and nights, fish it out and put it into a tile jar, cover it with a wet cloth and put it in a warm place to accelerate germination, and then germinate in 3 to 4 days. You can also quickly stir the seeds in boiling water for 1 minute, immediately pour into cold water, cool the water temperature to 40 ℃, soak for 2 hours, pour out the water, cover the wet sack for 12 hours, and sow 2 when the seeds expand or the outer skin is ruptured. Mechanical damage: mix 1 part of river sand and 2 parts of seeds evenly, put them on a medium-sized mill, spread 3-4 cm thick, and grind until the seed coat is burr. After grinding, the seeds were screened, soaked in 20 ℃ warm water for 1 day, piled in a warm place, germinated in about 5 days, and then sowed. Be careful not to grind the seeds too much, otherwise the seed embryos will be injured, the seeds will be easily infected by germs, there will be more rotten seeds after sowing, and the seedling emergence rate will be reduced. 3. Sulfuric acid treatment: for mature and hard seeds, soak them in 70%-80% sulfuric acid solution for 3-5 minutes, rinse them in running water for 30 minutes, or wash the residual sulfuric acid on the seeds with clean water many times and sow them a little dry. the germination rate can reach more than 90%. Click to get more planting techniques of Radix Astragali