Abstract

The effect of zeolite and biohumus and their combined effect on the nitrate regime and nitrification capacity of meadow-gray soils have been studied in a stationary field experiment on meadow-gray soils under beans (mung bean). The field experiment has established the highest efficiency of the combined use of organic (biohumus at the rate of 7.5 t/ha) fertilizers and zeolite (7.5 t/ha). The amount of nitrate nitrogen under beans decreased from the initial period of plant growth to the period of biological ripeness. The nitrification capacity of the soil dynamically changed depending on the phase of bean development; this indicator was more intensive in the flowering phase of the plant. The polynomial relationship between the amount of nitrates in the soil and the intensity of the nitrification process was high during the period of the initial development (spring) and period of biological ripeness of the plant (autumn) and weak in summer (during the flowering period). A positive effect of zeolite and biohumus on the content of nitrate nitrogen and the nitrification capacity of the soil has been established; their combined use has also proven to be efficient.

中文翻译：

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沸石和生物腐殖质对草甸灰土硝酸盐形态和硝化能力的影响

摘要

通过对豆类（绿豆）下草甸灰土的固定田间试验，研究了沸石和生物腐殖质及其对草甸灰土硝态氮状态和硝化能力的综合影响。田间试验确定了有机肥料（生物腐殖质为 7.5 吨/公顷）和沸石（7.5 吨/公顷）联合使用的最高效率。从植物生长初期到生物成熟期，豆类硝态氮含量呈下降趋势。土壤的硝化能力根据豆类的发育阶段动态变化；该指标在植物的开花期更为强烈。土壤中硝酸盐含量与硝化过程强度之间的多项式关系在植物发育初期（春季）和生物成熟期（秋季）较高，夏季（开花期）较弱）。沸石和生物腐殖质对硝态氮含量和土壤硝化能力具有积极影响；它们的结合使用也被证明是有效的。