湖北黄陂县五岭公社,位于鄂中低丘地区。成土物质以第四纪褐色粘土为主。耕作土壤多是白散土(白善土)、马肝土,部分为黄泥土、青泥土等类型。近年来,随着农业学大寨群众运动的深入开展,普遍推行了双季稻绿肥耕作制。氮磷肥用量迅速增加,土壤肥力不断提高,水稻产量逐年上升。但生产上,水稻类似胡麻斑型病、赤枯病的症状较为普遍,尤以白散土类型的早稻为最甚,以致成为当前早稻进一步增产的限制因素之一。 Huangling County, Hubei Wuling commune, located in hilly areas in Hubei. The soil material to the Quaternary brown clay-based. Tillage soil is mostly white soil (white soil), Ma liver soil, part of the yellow soil, green soil and other types. In recent years, with the deepening of mass education in agriculture in Dazhai, two-cropping system of green manure farming has been generally implemented. Nitrogen and phosphate fertilizer increased rapidly, soil fertility continued to increase, rice production increased year by year. However, the production of rice is similar to flax-type disease, the symptoms of the red wilt are more common, especially the white soil type of early rice is the worst, which has become one of the limiting factors for the further increase of early rice.