Before sowing seeds immersed in cold water at first to remove impurities, and then 1% potassium permanganate solution for disinfection of soaking two minutes
After disinfection with warm water soaking 48 hours, then rinse out the upper shell and shriveled seeds, remove the remaining filled seeds to be broadcast
Spread evenly to deal with a good sand bed, pressed, then covered with clean sand, the thickness of no more than 0