1999年冬 ,我省柑桔遭受大的冻害 ,冻死桔树 5～ 10 % ,减产 50 %左右。这次冻害主要是由于去冬长时间的干旱 ,加之高强度辐射降温而引发的霜冻所引起的。江西冬季少雨 ,干旱时有发生。希望各柑桔场接受经验教训 ,务必把防止冬旱和冻害作为柑桔冬季常规管理技术抓紧抓好。1　冬 In the winter of 1999, citrus fruits in our province suffered large frost damage, which killed 5-10% of the orange trees and reduced the output by about 50%. The frost damage was mainly caused by prolonged dry weather over the winter and the frost caused by high-intensity radiation cooling. Jiangxi is drier and less prone to drought. We hope that all citrus fields will accept the lessons learned and be sure to pay close attention to the prevention of winter drought and frost damage as a general management technique for oranges in winter. 1 winter