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Chernozems of Western Transbaikal: Distribution, Chemical Fertility, Organic Matter, Humus, and Yields
Arid Ecosystems Pub Date : 2020-10-28 , DOI: 10.1134/s2079096120040071
G. D. Chimitdorzhieva

Abstract

Along with the chestnut soils, Transbaikal chernozems are intensely involved in regional crop farming. The latter are deficient in humus (4.2%), feature a light granulometric composition, occur in patches commonly along various slopes, and are exposed to deflation. The biological activity is low due to deep freezing (4 m) and slow thawing. Microorganisms are distributed in the topsoil. The volume of the annual input of fresh organic matter into the soil is low and is slowly destroyed. Their humus is fulvic-humate in nature with a high content of nonhydrolyzable residue, which, along with humic acid, has a high proportion of fulvic acids. It is only with reduced agrotechnical use and the application of adaptive land-use practices that it is possible to attain a spring wheat yield of up to 21 quintal/ha, as compared to the yields of 12–13 quintal/ha obtained on regional farms.



中文翻译:

西贝加尔湖的黑钙石:分布,化学繁殖力,有机质,腐殖质和产量

摘要

除栗子土壤外,Transbaikal黑钙土强烈参与当地的农作物种植。后者的腐殖质不足(4.2%),具有轻颗粒组成,通常沿不同的坡度出现在斑块中,并容易遭受放气。由于深度冻结(4 m)和缓慢解冻,生物活性较低。微生物分布在表土中。每年向土壤中输入新鲜有机物的数量很少,并且逐渐被破坏。它们的腐殖质本质上是腐殖酸腐殖酸盐,具有高含量的不可水解残基,其与腐殖酸一起具有很高的腐殖酸比例。只有减少农业技术使用并采用适应性土地利用方式,才能使春小麦的产量达到每公顷21公担,

更新日期:2020-10-30
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