Method for preserving material through radish grafting

The invention discloses a radish grafting material preservation method, which comprises the following steps: an early-stage field planting step, a grafting management step, a grafting step and a post-grafting management step, in the early-stage field planting step, radish hybrid seeds with strong disease resistance and drought tolerance are used as stock materials, radish inbred line lateral branches needing to be preserved are used as scion materials, and the radish selfing line lateral branches are used as scion materials; in the grafting management step, the environment temperature is controlled to be 15-20 DEG C, meanwhile, a chlormequat chloride diluent is used for root irrigation, so that internodes of plants are shortened, tissues are compact, in the grafting step, scion buds are grafted on stock plants, and in the post-grafting management step, the grafted plants are managed by controlling the growth environment temperature, so that the grafted plants can be successfully mature to harvest seeds, the s