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川西地区位于东径103°,北纬31°左右的四川西北高原的边缘地带,盛产药材。当归 Angelica sine-nais(Oliv.)Diels 是本地栽培药材之一。川西地区海拔4243～1414 m。年平均气温一般为11.4℃,土壤温度一般为14.3℃。大暑时,3000m 左右地区平均气温一般为14.3℃,地温一般为15.8℃。立秋时,24 00m 左右地区平均气温为20℃,地温为21.8℃。白露时,1800m 左右地区平均气温一般为19℃,地温为21.7℃。3000～1800m 左右的无霜期为10～210天。降雨量一般为595.5mm。
The western part of Sichuan Province is located on the edge of the northwestern plateau of Sichuan, which is located at 103 degrees east and 31 degrees north latitude. It is rich in medicinal materials. Angelica sine-nais (Oliv.) Diels is one of the local medicinal herbs. The area in the west of Sichuan has an elevation of 4423 to 1414 m. The annual average temperature is generally 11.4°C, and the soil temperature is generally 14.3°C. At the time of major heat, the average temperature in the area around 3000m is generally 14.3°C, and the ground temperature is generally 15.8°C. At the beginning of autumn, the average temperature in the area around 24 00 m is 20°C and the ground temperature is 21.8°C. At Bailu, the average temperature around 1800m is generally 19°C and the ground temperature is 21.7°C. The frost-free period of about 3000 to 1800m is 10 to 210 days. The rainfall is generally 595.5mm.