A CLIMATOLOGICAL STUDY OF INJURY TO CITRUS TREES FROM FREEZING WEATHER IN CHINA

Injury to citrus trees, from freezing weather in winter, is the main h azard of citrus regions in many of the subtropical areas of the world. It affects the normal development of the citrus tree and its yield. T his paper describes the geographic distribution of freezing injury to citrus trees and climatic features of citrus growing regions in China. Five agroclimatic regions were identified for citrus winter survival in China. To avoid or reduce the loss of freezing injury to citrus, ag roclimatic regions with no injury or light injury, should be chosen to cultivate citrus species.