Filter Year: Topics: Author:
Home / Archive / 2018 - 4 (32) release Date 15.11.2018 / THE METHODOLOGY FOR CALCULATING IRRIGATION RATES PROVIDING THE FORMATION OF THE GIVEN SOIL MOISTURE PARAMETERS UNDER DRIP IRRIGATION

Archive

Author: Shtanko A.S. Shkura Viktor N.

THE METHODOLOGY FOR CALCULATING IRRIGATION RATES PROVIDING THE FORMATION OF THE GIVEN SOIL MOISTURE PARAMETERS UNDER DRIP IRRIGATION

Topics: 06.01.02 Land Reclamation, Recultivation, and Land Protection

Abstract:

The purpose of the research is the development of methodology for determining irrigation rates for drip irrigation of plants that ensure the formation of local (single) moisture contours in a subdrip soil space with a definite (given) depth of soaking of different soil types. The known proposals, calculation methods and methods for determining irrigation rates for drip irrigation are based on the approach (formula) formulated and proposed by A. N. Kostyakov and consider the use of various adjustments taking into account the specific features of soil moisture under drip water distribution to soil surface. The proposed adjustment factors were obtained only for narrowly defined soil and technological conditions of drip irrigation, which limits their application. To eliminate the above-mentioned shortcoming, the study was carried out, the main results of which are given in the article. The proposed methodology allows to determine the irrigation rate of a single emitter that provides the formation of a primary moisture contour in a sub drip soil space, for a wide range of soil and technological conditions of drip irrigation with a specified depth of moistening (wetting) at a certain antecedent soil water (a certain level of pre-irrigation humidity) and a predetermined level of post-irrigation humidity. The experimental check of the adequacy of the proposed methodology showed that the value of the irrigation rate per one emitter obtained as a result of the determination by the method proposed by us, is 5.2 l/drop and corresponds to the experimental value, fixed in patent RU no. 2204241 and equal to 5.62 l/drop with an accuracy tolerance of 7.5 %, which indicates the acceptability of the proposed calculation method for irrigation rates for various soil and technological conditions of drip irrigation of plants.
Key words: drip irrigation, drip watering, moisture contour, contour parameters, soil characteristics, irrigation rate.
DOI: 10.31774/2222-1816-2018-4-60-76

For citas:
A. S. Shtanko, V. N. Shkura. THE METHODOLOGY FOR CALCULATING IRRIGATION RATES PROVIDING THE FORMATION OF THE GIVEN SOIL MOISTURE PARAMETERS UNDER DRIP IRRIGATION. Scientific Journal of Russian Scientific Research Institute of Land Improvement Problems. 2018. No 4. P. 60-76  DOI:https://doi.org/10.31774/2222-1816-2018-4-60-76

PDF (536Kb)

ZIP (112Kb)