迄今,大麦改良的主要育种目标一直是选育早熟品种,以便成功的与水稻连作.日本中西部的早熟大麦品种经常遭受早春霜冻的危害.由于早熟品种对霜冻比较敏感,因此难以鉴定出忍耐或避开霜冻危害的早熟品种.尽管有这种困难,大麦育种家仍成功地培育出了具 So far, the main breeding goal for barley improvement has been the breeding of precocious varieties in order to succeed in succession to rice. The precocious barley cultivars in the central and western part of Japan are often endangered by early spring frosts, as precocious varieties are more susceptible to frost, making it difficult to identify patient or Avoiding frost-hardened early-maturing varieties Despite these difficulties, barley breeders have succeeded in cultivating