1954年暑期在企业經营組織較完善的国营青海省三角城种羊場进行实习(8月2日——8月25日);調查了各类型草原的分布及生态;家畜放牧情况的观察訪問;栽培牧草的参观,集采了野生牧草的标本种子;在此基础上作出了初步总結。本場位于北纬36°90′,东經100°70′,海拔3000米以上的草原上,地势东北高,西南低,东北二面环山。山高者約在4000米以上。土壤均屬半旱境及半湿潤境土壤,土层厚在60—110厘米,有栗钙土,黑鈣土,山地草甸土,河流兩岸之腐植質沼泽土等土类,据1953—1964年記載,年平均气温約5℃冬 In the summer of 1954, an internship was conducted in the well-established state-owned Triangle Town breeding farm in Qinghai Province (August 2 - August 25); the distribution and ecology of various types of grasslands were investigated; observation and grazing of livestock grazing were interviewed; The visit of cultivated forage collected the sample seeds of wild forage; on this basis, a preliminary summary was made. The field is located at 36 ° 90 ’north latitude, longitude 100 ° 70’ east longitude and altitude of 3000 meters above the grasslands, the terrain northeast high, low southwest, northeast surrounded by mountains. High mountain about 4000 meters above. Soil is semi-arid and semi-humid soils, soil thickness of 60-110 cm, with chestnut soil, chernozem, mountain meadow soil, humus and other soil on both sides of the river soil, according to 1953-1964 The annual record, the average annual temperature of about 5 ℃ winter