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一、东北中部气候特点与果树生长、越冬的关系根据蛟河、通化、公主岭、白城、延吉、敦化等地气象资料分析結果,东北中部气候条件具有以下4个特点: 1.冬季干寒、少雪:东北中部年平均溫度为2.1—5.5℃,最低温度在-30℃以下,冬季平均温度为-11.1至-20℃,低溫延續期长,全年有5个月的月平均溫度在0℃以下。而且冬季降水特少,12、1、2等3个月的降水量只等于全年的2.5—4.9％。冬季酷寒和低溫延續期长、已经不利于果树越冬,再加以冬季水分缺乏,更显著地减低了果树对低温
First, the central Northeast climate characteristics and fruit tree growth, overwintering According to the Jiaohe River, Tonghua, Gongzhuling, Baicheng, Yanji, Dunhua and other places meteorological data analysis results, the central Northeast climate has the following four characteristics: 1. Winter dry and cold, less Snow: The annual average temperature in central Northeast China is 2.1-5.5 ℃, the lowest temperature is below -30 ℃, the average temperature in winter is -11.1 to -20 ℃, the low temperature prolongation is long, and the monthly average temperature in 5 months is 0 ℃ the following. In addition, there is little rainfall in winter, and the precipitation in 12, 1, 2 and 3 months is only 2.5-4.9% of the whole year. Winter cold and low temperature prolongation has long been detrimental to fruit trees overwintering, coupled with lack of winter water, but also significantly reduced fruit trees on low temperature