嘉兴地区每年冬天(12月—2月)都要受到几次强大寒潮侵袭,最低温度常降到摄氏零下7—8度以下,使部分春花植株发生冻害,造成缺苗、缺株,影响产量。但是,几年来的经验证明:只要保暖防冻工作做得好、做得及时,是完全能够战胜强大寒潮而获得丰产的。安吉县晓市公社方桂珍试验农场,是拔海446米温 Jiaxing area every winter (December-February) are subject to several strong cold wave invasion, the minimum temperature often dropped below 7-8 degrees Celsius, so that some Chunhua plants freeze damage, resulting in lack of seedlings, lack of strains, affecting the yield. However, the experience of the past few years has proved that as long as the warm and antifreeze work well done in a timely manner, it is able to completely overcome the mighty cold wave and achieve a fertile harvest. Anji County, Xiaogong communes Fang Guizhen test farm, pulling the sea is 446 meters warm