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低温冻害是我国北方常见的玉米坏种现象之一,玉米属于晚秋作物,每蓬低温多雨的年份,种子不能充分成熟,或收获后来不及干燥已进入冬季,往往出现大规模的低温冻害坏种;造成玉米生产大幅度减产。为了解决这一重大生产课题,我们于1987～1989年间,对玉米种子在不同低温条件下冻害的临界水分进行了系统地研究。
Low-temperature frost damage is one of the common phenomenon of bad corn in northern China. Corn belongs to late autumn crop. When the temperature is low and rainy, the seeds can not fully mature, or the harvest is late and the dryness has entered the winter. Large- Resulting in a substantial reduction of corn production. In order to solve this major production issue, we conducted a systematic study of the critical moisture of corn seeds frozen at different cold temperatures from 1987 to 1989.