种子实现良种化与杂交化以后,作物的单产水平有了大幅度的提高。然而种子生产由于受土壤、气候等生态条件的制约,常出现供求矛盾,影响农业生产。随着植物组织培养技术的不断深入与完善,工厂化的种子生产将替代露天生产。所谓的组织培养就是 Seed yield and hybridization after the crop yield levels have been greatly improved. However, due to the constraints of ecological conditions such as soil and climate, seed production often has contradiction between supply and demand and affects agricultural production. With the deepening and improvement of plant tissue culture technology, factory-made seed production will replace open-air production. The so-called tissue culture is