1, choose the land for the border. Yuanhu is suitable for growing in fertile, loose and neutral sandy soil. For example, in the "board field", it is necessary to plough twice, with the depth of 15-20cm, and make the border with the width of 80cm- 100cm.

2. Sow in time. Generally, Rhizoma Corydalis is sown in late October of/kloc-0 to early October of1/kloc-0.

3. Increase fertilizer. In winter, it is necessary to reapply wax fertilizer, which is beneficial to the growth of underground stems of corydalis tuber.

4, ditch cleaning and weeding. Before emergence, in case of dry weather, water it in time; In case of rainy weather, the drainage should be cleaned in time.

5. Control pests and diseases. The main pests and diseases of Rhizoma Corydalis include downy mildew, Sclerotinia sclerotiorum and cutworm disease.

6, harvesting and processing. In the second year "long summer", when the stems and leaves of Rhizoma Corydalis are yellow, you can choose to harvest them in sunny days, wash the soil on the tubers, put them in hot water at 70℃, and stir them constantly to make the tubers heated evenly. When there is no white heart in the cut section, take them out, drain them and sun them for sale.