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低温冷害是全国性自然灾害之一。黑龙江省地处祖国高寒地区,年际间积温变幅在正负300℃左右,热量条件很不稳定。建国以来,多次出现冷害年,低温到来,遍及全省,作物受害很重。1986年5月7—9日低温冷害严重影响我省玉米育苗移栽的幼苗,损失较大。
Chilling damage is one of the natural disasters in the country. Heilongjiang Province is located in the motherland alpine region, interannual accumulated temperature range of plus or minus about 300 ℃, heat conditions are very unstable. Since the founding of the People’s Republic of China, cold chilling years have occurred many times and the arrival of low temperatures has spread throughout the province. The crops have suffered a great deal. May 1986 7-9 low temperature chilling seriously affect the transplanting of seedlings of corn seedlings in our province, a greater loss.