Turmeric seed ginger optimized-selection and planting method

The invention provides a turmeric seed ginger optimized-selection and planting method. The method comprises the following steps: digging first generation turmeric seed ginger, storing the seed ginger at a light-shading, dry, ventilating position at 5-30 DEG C for 30-50 days, and turning over turmeric growing land; selecting the first generation seed ginger after storage to perform intertillage weeding, medium-term top dressing, irrigation, dewatering and insect control, and digging turmeric from the first ten-day period of January next year to the ten-day period of February when the stem leaves of the turmeric wither and tuberous roots grow fully; selecting plants which have strong rhizome and are in clumps, and after removing tender ginger and radix curcumae, enabling the plants which have strong rhizome, are in clumps and are high in yield to serve as optimized seed ginger. By controlling seed ginger harvesting time and seed ginger quality, detoxicating seed ginger and optimizing seed ginger cultivation and the like, the turmeric cultivation and optimized selection of the seed ginger are combined, not only is the yield of the turmeric increased, but also the high-quality seed ginger is obtained in plantation, and degeneration of the turmeric in the process of reserving seeds for planting is avoided.