Method of rapid seedling growing of true seeds of sweet potatoes

The invention provides a method of rapid seedling growing of true seeds of sweet potatoes. The true seeds are processed for 30 minutes by concentrated sulfuric acid, rinsed by clean water, directly sown in a base material, then covered by a mulching film for 3 days so that all seedlings can sprout, and then irrigated in a micro-jet manner so that seed coats can shed naturally. The micro-jet watering is performed in daily management so as to control the temperature and the humidity. According to the invention, seedling growing procedures are saved; large labor is reduced; and emergence time of the seedlings of sweet potatoes is increased. In addition, via the combination of the mulching film and the micro-jet irrigation, a problem of manual removing of seed coats after the true seedlings of sweet potatoes sprout is solved, labor is saved and percentage of seedling emergency of the true seedlings of sweet potatoes is greatly increased. Tests and statistics show that the average generation rate of the true seedlings of hybridized combination of sweet potatoes is more than 85%, survival rate of seedlings is more than 90% and requirements on planting, inserting and breeding of new varieties of the true seedlings of sweet potatoes can be completely satisfied.