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笔者于1986年和87年暑期,曾多次到河北张北高原(又称张北坝上)对口蘑资源进行实地考察。采到一株似马铃薯颜色的大型真菌,经鉴定为杨树口蘑(Tricholoma populinum)。现将杨树口蘑的生境初报如下:(一)自然概貌:张北高原位于河北西北部,系内蒙高原的南部边缘。辖康保、沽源、张北三县全部和尚义县的一部分,总面积13300多平方公里。地势南高北低,呈现“远看是山,近看是川”的特点,平均海拔在1200～1500米。张北高原属寒温型大陆性季风气候。日照充足,年日照2800～3100小时,每天平均日照7～9小时为全省之冠;少雨干旱,年降水量在350～450毫米,主
The author in 1986 and summer 87 years, many times to Hebei Zhangbei Plateau (also known as Zhangbei dam) mushroom resources on the site visits. A large, potato-like fungus was identified and identified as Tricholoma populinum. Now the first report of the habitat of the poplar Tricholoma is as follows: (a) natural profile: Zhangbei Plateau is located in northwestern Hebei, Department of Inner Mongolia plateau on the southern edge. Under the jurisdiction of Kangbao, Guyuan, Zhangbei three counties all part of Shangyi County, with a total area of over 13,300 square kilometers. The terrain is high in the south and low in the north, showing the characteristics of “far-away mountains and near-long-sights”, with an average altitude of 1200-1500 meters. Zhangbei Plateau is a cold temperature continental monsoon climate. Adequate sunshine, the annual sunshine 2800 ~ 3100 hours, the average daily sunshine 7 to 9 hours for the province’s crown; less rain and drought, the annual rainfall of 350 to 450 mm, the main