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土壤热化过程的本质乃在于土壤有机质本性的转化与数量的改变,由于土壤微生物生命活动的产物——腐殖质的形成和它渗入到土粒间与矿物颗粒紧密的结合,而生成了新的土壤组成部分——有机-矿质复合体。复合体的生成,乃是生土与热土质上的区别。土壤生物的活性影响着土壤有机质的转化,因而就构成了肥土和瘦土的差别。 为了了解生土与熟土、肥土与瘦土本质的差别,从而进一步掌握土壤熟化过程的规律,我们对京郊某些不同熟化类型土壤的腐殖质组分、特性、氮素分布以及腐殖物质的冬季动态进行了研究,现将初步工作的结果归纳如下。
The essence of the soil heating process lies in the transformation and quantity change of the nature of soil organic matter. Due to the formation of humus which is the product of the life activity of soil microorganisms and the infiltration of soil humus into the close combination of mineral particles with soil particles, new soil is generated Component - organic - mineral complex. The formation of complex, but the difference between raw soil and hot soil. The activity of soil organisms affects the conversion of soil organic matter, and thus constitutes the difference between fat soil and lean soil. In order to understand the difference between the natural and mature soil, the difference between the fat soil and the thin soil, so as to further understand the law of the soil ripening process, we analyzed the humus composition, characteristics, nitrogen distribution and humus The winter dynamics are studied, the results of the preliminary work is summarized as follows.