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近年来,随着麦—稻—稻一年三熟制的发展,稻田渍水时间的延长,水稻土的次生潜育化问题已引起了人们的密切注意。作者最近在青浦县参加了一段时间的土壤详查工作,在野外工作中发现,有相当一部分土壤,在坚实的犁底层上面,出现了一层厚度为5—10厘米,土性粘闭、颜色青黑、还原性强的层次(群众称之为青泥层),剖面构型为A—Pg—P—W—G,按龚
In recent years, with the development of three-year wheat-rice-rice system and the prolonged waterlogging time in paddy fields, the secondary gleization of paddy soil has aroused people’s close attention. Recently, the author participated in a detailed investigation of the soil in Qingpu County for a period of time. In the field work, he found that a considerable part of the soil was above a solid plow bottom with a layer of 5-10 cm in thickness, Blue and black, reducing the strong level (the masses called green layer), section configuration A-Pg-P-W-G, according to Gong