How to plant "Pinellia ternata"?

After the land is selected, dig the land for about 2 cm in October and November to remove gravel and weeds, and let it weather and mature. Pinellia ternata has a short growth period, and base fertilizer plays an important role in it. Combined with soil preparation, 2 kg of stable manure or compost and 5 kg of calcium superphosphate are applied every 667 m2, and turned into the soil as base fertilizer. Before sowing, plough it again, then fine it and rake it flat, and raise the high border with a width of 1.3 meters and the furrow with a width of 4 cm. Or after shallow tillage, it is made into a flat ridge with a width of .8 ~ 1.2 meters, and the ridge width and height are 3 cm and 15 cm. Ridges should be leveled in a down-to-earth manner, so that spring sowing can accelerate germination and plastic film mulching cultivation can be carried out at seedling stage. Accelerating germination and covering with plastic film not only makes Pinellia ternate sprout early, which increases the growth period by more than 2 days, but also can keep the loose state during soil preparation, promote root growth, make Pinellia ternate root thick and long, expand the root system, and enhance the ability of drought resistance and seedling fall prevention.