本文总结了15年来采用多种鉴定方法,在室内和田间对5000余份不同地理来源各种类型品种对低温的忍耐力进行了抗冷鉴定和评价,筛选出一批耐冷性强的品种,为直接或间接利用提供了科学依据。与此同时,利用抗冷资源进行创新研究,已获得几个耐冷性强,并具有高产、多抗、水旱两用的新品种,目前在北方稻区广为利用,取得显著的经济效益。 This article summarizes 15 years of using a variety of identification methods in the indoor and field of more than 5,000 samples from different geographical sources of various types of cold endurance cold tolerance were identified and evaluated a number of cold-resistant varieties were screened for Direct or indirect use provides a scientific basis. At the same time, innovative research using cold-resistant resources has yielded several new varieties with high cold tolerance and high yield, multiple resistances, water and drought. Currently, they are widely used in northern rice areas and have achieved significant economic benefits.