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对河北省十个主要土壤类型的耕层土壤结构进行了水稳性分析,得到了如下结果: 1、除了黑土和沼泽土这二个土壤类型,其水稳性大团聚体总量在60％以上,和灌淤土、粘质潮土和部分棕壤(植被保护好的)在40％以上外。其他土壤都在40％以下。尤其是分布面积最大的褐土,大部分在30％以下。广大冲积平原上的潮土,大部分在20％以下。普通栗钙土和盐土(包括内陆盐土和滨海盐土),在10％以下,低的甚至在5％以下。 2、河北省土壤的结构系数大部在40％以上,其中许多土壤在60％以上,仅有盐土在40％以下。若干研究工作和生产实践表明,土壤结构是土壤肥力的基础。具有良好结构的土壤,能调节土壤中的水、气、热、肥的矛盾,满足作物高产稳产的需要。土壤结构问题涉及面较广,本文仅对河北省十个主要土壤类型的表层(0—20厘米)土壤水稳性结构状况进行初步探讨。
The water stability analysis of tillage soil in ten major soil types in Hebei Province was carried out. The results are as follows: 1. Except for the two soil types, black soil and swamp soil, the total amount of water stable macroaggregates is about 60% Above, and irrigated silt, clay tide soil and part of the brown soil (vegetation protection) in more than 40%. Other soils are below 40%. In particular, the cinnamon soil with the largest distribution area is mostly below 30%. Most alluvial plain on the Chao soil, most of the following 20%. Ordinary chestnut soil and saline soil (including inland salt and coastal salt), below 10%, low even below 5%. 2, Most of the structural coefficients of soils in Hebei province are over 40%, many of them are over 60%, only about 40% of them are saline soils. Several research and production practices show that soil structure is the basis of soil fertility. Well-structured soils can regulate the contradictions of water, gas, heat and fertilizer in the soil to meet the needs of high and stable crops. In this paper, only the soil water-stability structure of the surface layer (0-20 cm) of ten main soil types in Hebei Province was discussed in this paper.