红壤在我国分布面积极广。长江中下游以南各省均有;在江西则占全省土地面积46%。低平处虽多已利用,但部分作物产量较低,荒地仍然很多。因此,开发红壤荒地,提高红壤地区产量,对发展国民经济是有重大意义的。红壤区高温多雨,有不同程度的干湿季节,有机质分解迅速,风化作用进行剧烈、土层深厚,下部常具结实的网纹层或铁锰结核与 Red soil is widely distributed in our country. The provinces in the south of the middle and lower reaches of the Yangtze River are all in the province; in the province of Jiangxi, they account for 46% of the total land area in the province. Although many low-level office has been used, but some lower crop yields, wasteland is still a lot. Therefore, it is of great significance to develop the wasteland of red soils and increase the output of red soils in order to develop the national economy. Red soil area is hot and rainy with varying degrees of wet and dry seasons, rapid decomposition of organic matter, intense weathering, deep soil layers, often with strong textured layers or ferromanganese nodules in the lower part