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我国长江以南各省,分布有广大面积的红壤(也有黄壤、砖红壤性土和砖红壤),红壤耕田的,农作物的产量一般此较低,而且还存在着大面积的荒地,但是这个地区的气候条件是相当优越的,年平均雨量在1200毫米以上,气温在18度以上,植物生长期很长,农作物的种植年有2～3造,常绿阔叶林为主的原生植物生长快速,植被砍伐后的自然恢复也很快,并且适宜于大力发展亚热带和热带的经济植物,因此这个地区对农业和经济植物资源的发展具有良好的远景。
Red soil (also with yellow soil, brick red soil and brick red soil) distributed in all provinces south of the Yangtze River south of the Yangtze River and red soil is plowed. The output of crops is generally low and a large area of wasteland exists. However, this area Of the climatic conditions are quite superior, with an average annual rainfall of 1200 mm above the temperature of 18 degrees above the plant growth period is very long, the planting of crops 2-3 years, the evergreen broad-leaved forest-based native plants grow rapidly , Natural recovery after deforestation is also fast and is suitable for the energetic development of subtropical and tropical economic plants. Therefore, the region has a good prospect for the development of agricultural and economic plant resources.