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Assessment of nitrogen pollution of surface and underground water for model landscape in Oka river basin

100%

Mazhaysky Y. A., Guseva T. M.

Zeszyty Problemowe Postępów Nauk Rolniczych

2006

tom 513

Objective of these investigations was assessment of surface and underground waters with nitrogen of a model landscape in the Oka river basin. Performed investigations showed that lands of agricultural use contribute to pollution of water bodies with biogens. Maximum content of ammonia nitrogen was observed in water of a small river in its area, located in the influence zone of dacha lots, where fertilizer application is not controlled. The greatest concentrations of nitrates, nitrites and ammonia nitrogen were observed in underground waters, being formed in the territory of dacha lots and irrigated lands. Reed, vegetating on banks of the small river, plays a certain role in processes for water self-purification, as it accumulates a significant amount of nitrates, but at the same time, faded remains of the plant are secondary pollutants for the water body. Data obtained can be used as a source material for ecological monitoring of small rivers in Ryazan region. To organize and to perform ecological audit in order to control correspondence of gardening associations' activity with environmental codes and to work out a complex of measures, correcting their activity. In order to prevent secondary pollution of water bodies of drainage area agrolandscapes, agricultural organizations should mow higher water plants along banks of drainage collectors by the end of vegetation season.

The impact of the meteorological factors on the calculation of crops water consumption and vertical moisture exchange in soil

80%

Mazhayskiy Y. A., Brys K., Guseva T. M., Pavlov A. A.

Acta Scientiarum Polonorum. Formatio Circumiectus

2020

tom 19

nr 1

Aim of the study The aim of the work was to develop methods for calculating water consumption of plants and vertical moisture exchange, focusing on the impact of meteorological factors upon the agricultural conditions of reclaimed soils. Material and methods The methods of Shebeko, Rogotskiy and Pylenok, which are commonly used in Russia, were assumed as the basis of the study. The research was carried out on an ecological landfill created in the Oka river basin near Riazań (central part of the Russian Plain). The empirical data of agro-climatologic, radiation, lysimetric and soil moisture measurements in the period from the beginning of May to the end of September during the years 1981–2018 were taken into account in the conducted analyses. Processing of research materials was carried out using such methods as analysis of variance, calculation of statistical characteristics of the sample, linear correlation. The analysis of the influence of meteorological factors on the water balance of soil with three agricultural crops: lupine, potatoes, and oats was conducted in the 16 weeks following the time of sowing (planting) the crops in the field. Results and conclusions Such investigated temporal dynamics of water consumption has pointed to strong correlations of this consumption with radiation balance, saturation deficit, and bioclimatic coefficients of the agricultural crops. The new coefficients were proposed, providing more precision than the studies conducted previously in Russia, applied in the methods of calculating water consumption and vertical moisture exchange. There exists a need to calculate the optimum irrigation regime of drained soils, and to plan the regime for complex land reclamation, including technologically contaminated lands.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Formatio Circumiectus

1 Zeszyty Problemowe Postępów Nauk Rolniczych

2 Guseva T. M.

1 Brys K.

1 Mazhayskiy Y. A.

1 Mazhaysky Y. A.

1 Pavlov A. A.

1 2020

1 2006

Wyniki wyszukiwania

Assessment of nitrogen pollution of surface and underground water for model landscape in Oka river basin

The impact of the meteorological factors on the calculation of crops water consumption and vertical moisture exchange in soil