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沾河林业局蔡家岗苗圃位于48°37′N、126°727′E,属小兴安岭主脊的西坡,海拔高度240米左右的丘陵地带。该地为典型大陆性气候,冬季干燥寒冷,夏季热而多雨,春秋两季较短。年平均气温为-2.34℃。最低气温出现在1—2月内,极温可达-46.0℃;最高气温出现在7～8月,极温为36.0℃;年降雨量为574.9毫米。雨量多集中在7、8两月,年蒸发量1267.3毫米。春季主风方向为西南风,大风日数颇多。无霜期90天左右。土壤冻结期可达7个月之久,冻结深度达194.6厘米。由于不利气候因素
Zhahe forestry bureau Caijiagang nurseries located at 48 ° 37’N, 126 ° 727’E, is the western slope of the main ridge Xingling Mountains, about 240 meters above sea level hilly areas. The area is a typical continental climate with dry and cold winter, hot and rainy summer and short spring and autumn seasons. The average annual temperature of -2.34 ℃. The lowest temperature appeared in January-February, the extreme temperature could reach -46.0 ℃; the highest temperature appeared in July-August, the extreme temperature was 36.0 ℃; and the annual rainfall was 574.9mm. Rain and more concentrated in 7,8 two months, the annual evaporation 1267.3 mm. Spring wind direction for the southwest wind, a lot of windy days. Frost-free period of 90 days. Soil freezing period of up to 7 months, the freezing depth of 194.6 cm. Due to adverse climatic factors