目前,遗传学家、细菌学家、病毒学家、化学家、园艺学家和农学家都在加强植物抗霜冻害的研究。在美国,科罗拉多大学的科学家研究用病毒攻击结霜细菌,佐治亚大学的科研人员用细菌来控制草莓、苹果和桃树上的霜冻害。匈牙利的科学家发现,在植物细胞中增加脂肪可提高小麦、豆类和水果受冻害后的生存率。美国的园艺学家能使洋葱种子在较冷的土壤中发芽。加拿大的科学家研究怎样使小麦、大麦植株上不形成霜冻。一般说来,连续两天以上温度在0℃以下,就会出现 At present, geneticists, bacteriologists, virologists, chemists, horticulturalists and agronomists are all intensifying research on plant frost damage. In the United States, scientists at the University of Colorado study viruses to attack frosted bacteria, and researchers at the University of Georgia use bacteria to control frost damage on strawberries, apples and peaches. Hungarian scientists found that increasing fat in plant cells can increase the survival rates of wheat, beans and fruits after frost damage. Horticultural scientists in the United States can germinate onion seeds in colder soil. Canadian scientists study how to make wheat, barley plants do not form a frost. In general, more than two days in the temperature below 0 ℃, will appear