在大约-321℃干的液氮中可使为数众多的作物种子保存多年。冷藏之前降低种子的水平含量是成功贮藏种子的主要因素。种子水分含量过高时,在冻结过程中就会在种子内形成结晶冰块,这便是致伤种子的原因。据研究大麦种子含水量在20.8％或低于 A large number of crop seeds can be preserved in liquid nitrogen at about -321 ° C for many years. Reducing the level of seeds before refrigerating is a major factor in the successful storage of seeds. When the seed moisture content is too high, ice crystals will form within the seeds during the freezing process, which is the reason for the seed injury. Barley seed moisture has been studied at 20.8% or below