随着稻、麦的持续高产,高产稳产水稻土的土壤条件日益受到重视,不少单位进行了专门研究(上海市农业科学院土肥植保研究所土壤组,1975;广东省农业科学院土肥所土壤组,1976;中国科学院南京土壤研究所苏南调查组,1977)。但研究的内容多偏重于土壤的农业化学性状或土壤形态的描述,而较少进行土壤结构性的研究。实践表明,土壤结构 With the continuous high yield of rice and wheat, the soil conditions of paddy soil with high and stable yield have been paid more and more attention. Many units have conducted special studies (Soil Group, Institute of Soil and Fertilizer Plant Protection, Shanghai Academy of Agricultural Sciences, 1975; Soil and Fertilizer Institute of Guangdong Academy of Agricultural Sciences, 1976; Southern Jiangsu Institute of Soil Science, Chinese Academy of Sciences, 1977). However, the content of the study is more emphasis on the description of agrochemical traits or soil morphology of the soil, but less on the study of soil structure. Practice shows that soil structure