Ecological adaptability and venture climatic subarea Zoning based on frost in florescence of apricot in Xinjiang

The natural conditions such as sunshine intensity,heat and water resources,and soil environments in Xinjiang apricot production areas are fit for the growth of apricot.The apricot can bloom and fruit normally provided that the acumulated temperature over 10℃ is more than 2500℃ from sprouting to fruit maturing of apricot.Yeild of apricots is limited by low temperature and forst in its florescencs influencing its economy.Because of the lower temperature in winter in north part of Tianshan Mountain,the survival rate through the winter is very low limiting the development of apricot in this area.By using the theory of analyzing natural disaster and the losing rate as the climatic index,the apricot planting areas in Xinjiang are zoned into four climatic parts.And the frequency of frost,degree of freeze injure,advantage and disadvantage of developing apricot industry in Xinjiang are discussed.