ОБОСНОВАНИЕ РЕЖИМА ВЛАЖНОСТИ ДЕРНОВО-ПОДЗОЛИСТЫХ ПОЧВ ВОДОРАЗДЕЛОВ ПРИ КАПЕЛЬНОМ ПОЛИВЕ КАБАЧКОВ

Abstract

The purpose of the research is to determine the boundaries of the moisture content of the sod-podzolic soil of watersheds with drip irrigation of marrows. The research was carried out on a pilot site in 2019. The research methodology was developed by the teaching staff of the Department of Land Reclamation and Reclamation of the Timiryazev Russian State Agricultural University-Moscow Agricultural Academy. The organization of scientific research was carried out using experimental plots, lysimeters and a water-physical laboratory, with the help of which the necessary data were obtained to solve the problem. Using the obtained data and V.V.Shabanov's formula, a graph of the regularity of changes in the relative yield (Yi / Ymax) of zucchini from the relative humidity of sod-podzolic soil (in a layer of 50 cm) was plotted with drip irrigation. In the formula of V.V. Shabanov for the conditions under consideration, the value of the coefficient γi, equal to 4.278, was obtained. It has been established that the moisture content of the soddy-podzolic soil of the watersheds must be maintained in the optimal range, taking into account the requirements of plants during the entire growing season. The best range of moisture content in soddy-podzolic soil in watersheds, based on scientific research data, is (0.65-0.79) PV for zucchini. The correlation coefficient of this relationship is 0.979 + 0.089, which indicates a close relationship between the values under consideration. At the optimum moisture content of soddy-podzolic soils (0.65-0.79 PV) and a groundwater depth of 1.60 m and deeper (watershed areas), a leaching regime is observed.