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本文着重于讨论下蜀黄土起源的水稻土在稻麦轮种下土壤酸碱度和氧化还原电位的变化。 水稻土的耕层土壤酸碱度和氧化还原电位具有季节性的变化。水稻生育期大部分时间渍水,土壤处于还原态条件,土壤酸碱度为中性;旱地时土壤酸碱度和氧化还原电位状况通常是弱酸性和氧化态。渗育层下段终年为氧化态和接近中性。这些是与水稻土剖面的发育密切相关。
This paper focuses on the changes of soil pH and redox potential under the rotation of paddy and wheat under the loess origin. Soil pH and redox potential of topsoil in paddy soil changed with seasonal changes. Soil waterlogging is most of the time during rice growth, the soil is in the reduced state, and the soil pH is neutral. In the dry land, the soil pH and redox potential are usually weak acidity and oxidation state. The lower part of the infiltrated layer is oxidized and nearly neutral throughout the year. These are closely related to the development of paddy soil profiles.