【摘要】 <正> 四川省有水田资源面积4592万亩,约占总耕地面积的一半,其中1/3以上为冬水田。由于多数水田无灌排渠系或水源缺乏,故常用蓄囤冬水的形式解决来年种稻用水问题。长期淹灌平作栽培的结果,造成水田土壤潜育化程度与日剧增,加上串灌串排易使水稻土糊塞状结构破坏,因而隐匿侵蚀日益严重,土壤肥力逐年减退,土质变坏,作物产量不断下降。长期以来,水田土壤的隐匿侵蚀很少为人们重视,每次暴雨都造成更多还原

【Abstract】 Partly-watered ridge culture of paddy is a method of tillage conserving soil and holding moisture, functional in remedying suppressed erosion, through practice of intensive cultivation of smaller area of cropland for high and stable yield, by applying bio-thermodynamic principles of soil fertilizing in a kind of comprehensive method of cultivation technique, controlling temperature and fertility by means of the moisture as an agent. The method is characterized by sparing use of water and insecticides, and reduced amount of work for weeding the fields, while preventing and remedying loss of soil and water and increasing benefits. It has been proved effective in remedying suppressed erosion of paddy fields in rolling areas in S. China, and is dealt with in concrete in this paper.更多还原