广西石灰岩分布面积大,约占总面积的50％。农村习惯施用石灰,农民中有“一担石灰一担产量”的说法。由于长期大量施用石灰,石灰性稻田面积不断扩大。如桂林附近的灵川县,1958年第一次土壤普查时,石灰性水稻土为43,400亩,占稻田面积的14％。1979年普查时,石灰性稻田发展到177,054亩,占稻田总面积的55.7％,整个桂林地区石灰性水稻土达60 Guangxi limestone distribution area, accounting for about 50% of the total area. Lime is used in rural areas and peasants have a saying that “a burden of lime and a burden”. As a result of long-term large-scale application of lime, calcareous rice fields continue to expand. For example, in Lingchuan County near Guilin, in the first soil survey in 1958, the amount of calcareous paddy soil was 43,400 mu, accounting for 14% of the paddy field area. At the time of the 1979 census, calcareous paddy fields developed to 177,054 mu, accounting for 55.7% of the total paddy field area. The calcareous paddy soil in Guilin area reached 60