在我国长江以南的广大丘陵和山区,普遍分布着带红色或黄色的酸性土壤,统称为红壤土。我国红壤土的总面积约有117万平方公里,占全国总土地面积的12％左右。我省红壤面积很大,约占全省总土地面积46％,由红壤开发利用而成的耕地,占全省总耕地面积一半以上。 In the vast hills and mountains south of the Yangtze River in our country, red and yellow acidic soils are commonly distributed, collectively referred to as red loam soil. The total area of ​​red earth in China is about 1.17 million square kilometers, accounting for about 12% of the country’s total land area. The area of ​​red soil in our province is very large, accounting for 46% of the total land area of ​​the province. The cultivated land that is developed and utilized by red soils accounts for more than half of the total arable land in the province.