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Author: Mamedov B. M.

ON WATERING QUALITY ASSESSMENT DURING SPRINKLER IRRIGATION (overview)

Topics: 06.01.02 Land Reclamation, Recultivation, and Land Protection

Abstract:

The aim of the study is to review and analyze existing papers on determination of weather conditions impact on quality of artificial rain, as well as assessment of irrigation quality to keep the ecological balance during irrigation by sprinkling. To identify the effect of sprinkling irrigation of agricultural crops on the reclamation-ecological state of soil, studies with medium-range and long-range sprinklers, as well as wide-coverage linear and center pivot sprinkler machines were conducted. In the course of studies the analysis of wind regime influence on evaporation and water loss from the rain cloud during the operation of sprinkler machines and implements was carried out. It was found that during sprinkling, the irrigation efficiency is influenced not only by soil-reclamation and organizational-economic factors, but also by the wind regime which is one of the main factors determining the possibility of using sprinkling machines and implements. Along with the use of medium-range and long-range apparatus, the wide-coverage sprinklers Fregat, Volzhanka etc were widely used in Azerbaijan. The measures to prevent the negative impact of hydrometeorological conditions on the technical and operational performance of sprinkler machines and implements in order to improve the reclamation-ecological conditions of soil and environment and to maintain ecological balance are discussed. The basis of sprinkling irrigation technology is proved to be a rational placement of irrigation pipelines and sprinklers. In solid-set sprinkler systems, where it is impossible to maneuver the irrigation pipelines and change the distances between them, the performing of a correct calculation of distances between the sprinklers plays an important role. For sprinkler patterns, the calculation should be performed taking into account all factors influencing the irrigation process. As a result of the conducted experiments on the influence of wind regime on the capture radius of the sprinkler it was found that with the wind speed increase the width of the irrigated area narrows, the site takes the form of an ellipse. The flying distance of the droplets in the direction of wind increases and against the wind – decreases.
Key words: sprinkling, irrigation, linear and center pivot sprinkler, jet apparatus, evaporation, wind losses, rain cloud.
DOI: 10.31774/2222-1816-2019-2-150-164

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