几年来,我们通过电离辐射梨的休眠枝条,并经过营养繁殖后,不但提高了梨的抗寒性,同时也提高了果实的耐贮性。我们认为这是利用原子能应用在梨的抗寒育种上的一项新途径。(一)呼盟地处北纬48°以北的高寒地带,无霜期在大兴安岭南部为110—120天左右,北部 Over the past few years, we ionized pear dormant branches, and after nutrition breeding, not only improve the pear’s cold resistance, but also improve the fruit storability. We think this is a new way of utilizing the atomic energy in pear cold-resistant breeding. (1) Hulumei is located in the alpine zone north of 48 ° north latitude, the frost-free period is about 110-120 days in the southern part of the Greater Xing’an Mountains,