我县稻田土壤主要是砾底黄泥田和砾底灰泥沙田两种,土层浅,肥力低,经选点测定,pH值在6.5—7之间。历来有稻田施用石灰的习惯,每亩每季施用量多达400—500 The paddy soil in our county is mainly composed of gravel bottom yellow muddy field and gravel bottom stucco sandy soil. The soil layer is shallow and the fertility is low, as determined by the selection point and the pH value is between 6.5-7. Traditionally, the habit of applying lime to paddy fields has been applied at up to 400-500 acres per acre