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我省由红壤发育而成的水田约占总水田面积的60%,其中亩产低于600斤的红壤低产田约占红壤性稻田的34%。主要的土壤类型有:(一)由红色粘土红壤发育的黄泥结板田(包括死黄泥田、红泥田、火隔田等);(二)由红砂岩红壤发育成的结板沙田(包括面浆田、沉板田、红沙泥田等)。低产原因是;(一)雨季受山上黄泥水入侵和冲刷;常年缺乏水源,夏秋尤其干旱。(二)耕层浅薄,有机质和养分缺乏(表1),土质过粘或过砂(表2),结构不良,耕作困难,保水,保肥和供肥能力差。
The paddy field developed from the red soil in our province accounts for about 60% of the total paddy field area, of which about 34% of the red paddy field has a yield of less than 600 kg per mu. The main types of soils are: (i) yellow clay knot fields (including dead yellow mud fields, red mud fields, fire fields, etc.) developed from red clay red soil; (ii) Mian Tian, Shen Ban Tian, red mud fields, etc.). The reason for the low yield is: (1) the rainy season was affected by Huangshan muddy water invasion and erosion on the mountain; perennial lack of water supply, especially in summer and autumn. (2) shallow topsoil, lack of organic matter and nutrients (Table 1), over-sticking or over-filling of soil (Table 2), poor structure, difficult farming, poor water retention, fertigation and poor fertility.