The soil types in Tongjiang County, Sichuan Province are as follows:

The soil in Tongjiang County has 6 soil types, 10 subtypes, 16 soil genera, and 36 soil types. kind. Among them, 31 soil types are agricultural soils and 7 soil types are forest soils. Paddy soil is the largest soil type among the agricultural soils in Tongjiang County, with an area of ??406,858 acres, accounting for 54% of the agricultural soil; followed by purple soil, with an area of ??194,108 acres, accounting for 25.8%; followed by yellow brown soil, yellow soil, and limestone There are 4 soil types including soil and new soil. There are 3 subcategories, 7 soil genera, and 15 soil species in rice soil. Among them, the flooded rice soil subcategory purple soil genus is the largest soil genus, with 3 soil species and an area of ??193,840 acres, accounting for 10% of the paddy soil. 47.6% of the total; followed by the subcategory of purple-yellow mud soil of the cultivation type rice soil, with 4 soil types and an area of ??177,021 acres, accounting for 43.5%. There are 5 soil types, 7 subtypes, 9 soil genera, and 16 soil types in dryland soil. The largest soil type is purple soil type, covering an area of ??194,108 acres, accounting for 56% of the dryland area. Introduction to Tongjiang County, Sichuan:

Tongjiang County is located in the northeastern part of Bazhong City, Sichuan Province, at the gap of Daba Mountain at the southern foot of the eastern section of Micang Mountain, located at 31°39′~32°33′ north latitude and 32°33′ east longitude. Between 106°59′~107°46′. Tongjiang County covers an area of ??4116.58 square kilometers. The county borders Wanyuan City to the east, Pingchang County to the south, Bazhou and Nanjiang District Counties to the west, and Nanzheng, Xixiang and Zhenba Counties of Shaanxi Province to the north. Tongjiang County is 150 kilometers away from Dazhou City in the south, 420 kilometers away from Chongqing City; 89 kilometers away from Bazhong City in the west, 580 kilometers away from the provincial capital Chengdu, 270 kilometers away from Guangyuan City; 180 kilometers away from Wanyuan City in the east; and Shaanxi Province Town in the north. It is 158 kilometers away from Ba County and 131 kilometers away from Nanjiang County to the northwest.

Tongjiang County has a subtropical monsoon climate. Spring is warm and autumn is cool, summer is hot and winter is cold, precipitation is concentrated, rain and heat occur in the same season, and the four seasons are distinct. The multi-year average temperature is 13.9°C, the accumulated temperature greater than or equal to 0°C is 5136°C, and the accumulated temperature greater than or equal to 10°C is 4644°C. Tongjiang County has sufficient sunshine, with an annual average sunshine hours of 2405.2 hours and a frost-free period of 210.7 days. Tongjiang County has coal, oil, natural gas, uranium and other mineral resources. Tongjiang County has biological resources such as metasequoia, cerebellum, ginkgo, tulip tree, red bean tree, spring tree, and hazelnut.