棕红壤是我省亚热带地区的重要土壤资源，面积约２５万ｈａ，主要分布于皖南中北部及皖西大别山南麓低丘岗地区。海拔多小于１００ｍ，地形平缓。由于受东南季风之惠，该区气候温暖，水热丰沛，年均温１４．５－１６．６℃，≥１０℃积温４８００－５２００℃，年降水量１... Red brown soil is an important soil resource in the subtropical region of our province, with an area of ​​about 250,000 ha, mainly distributed in the central and northern parts of southern Anhui and the hilly area at the southern foot of the Dabie Mountains in western Anhui. Less than 100m above sea level, flat terrain. Due to the benefits from the southeast monsoon, this area has a warm climate with abundant water and heat, annual average temperature 14.5-16.6 ℃, accumulated temperature ≥10 ℃ 4800-5200 ℃, annual precipitation 1 ...