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首页> 外文期刊>Агрохимия >Humus in leached chernozem with regard to fertilizer use over an extended period.
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Humus in leached chernozem with regard to fertilizer use over an extended period.

机译：在延长时期的肥料使用的浸出后腐殖质中的腐殖质。

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摘要

The effects on humus of applying 3 t semi-rotted manures/ha and small amounts of mineral fertilizers to a moderately deep, clay loam leached chernozem in the southern forest steppe of Western Siberia was investigated between 1970-93. Quantities of soil organic matter in the plough layer (0-20 cm) increased by an average of 35.2% over the entire period, as compared with control plots. Positive effects of amendments on humus content began to be seen after the second of 4 repetitions of a 6-year croprotation (1 year fallow, 6 years wheat), with humus content of the plough layer increasing by 0.26-0.33%, depending on amounts of N fertilizers used. The humus content of the sub-plough layer (20-40 cm) also increased by 0.12-0.36% after the second repetition of the 6-year crop rotation, compared with control plots. Humus composition also improved, with contents of humic acids increasing by 0.24-0.39% after the second repetition of the 6-year crop rotation. Contents of fulvic acids and non-hydrolysed residues remained unchanged. Composition of humic acids also changed, with an increase in contents of humic acids bound to calcium and sesquioxides.
机译：在1970 - 93年间，在西西比西亚南部森林干草原的中度粘土壤土浸出的Chernozem应用了3吨半腐烂的粪便和少量矿物肥料的影响。与对照图相比，犁犁层（0-20cm）中的土壤有机物质（0-20cm）的数量平均增加35.2％。在6年裂隙（1年休耕，6年小麦）的第二次重复的第二个重复后，腐殖质含量的阳性效应开始于4次重复（1年休耕，6岁），犁犁层的腐殖质含量增加0.26-0.33％，取决于金额使用的肥料。与对照图相比，亚犁层（20-40厘米）的腐殖质含量（20-40厘米）在6年作物旋转的第二次重复后也增加了0.12-0.36％。腐殖质组成还改善，腐殖酸含量在第二次重复6年作物旋转后的增加0.24-0.39％。富含酸和非水解残基的含量保持不变。腐殖酸的组成也改变，随着钙和苏克酸含量结合的腐殖酸含量增加。

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