I. A. Kostovarova, S. L. Shlenov, M. P. Zamakhovsky
All-Russian Research Institute of Irrigation Systems and Agricultural Water Supply “Rainbow”, pos. Raduzhnyi, 38, Kolomenskii r-n, Moskovskaya obl., 140483, Russian Federation
Abstract. The studies were carried out to determine the effectiveness of metering fertilizer injector unit, used for serial sprinkling machines. The research was carried out in the Moscow region in 2017. All the activities were performed according to the regulatory documentation. The fertilizer injector consists of a metering unit for the selection and feeding of liquid fertilizers, a reservoir for liquid fertilizers, junction lines with shut-off and control valves, and pressure control devices. The unit operates in a continuous automatic mode on the principle of displacing equal volumes of mineral fertilizers solution into a pressure irrigation pipeline. It is equipped with interchangeable pistons that can work in two modes (1st – 0.1–1.0 MPa, 2nd – 0.05–1.0 MPa). Fertilizer is fed during both forward and backward piston strokes, that is, continuously. This ensures the constant and uniform concentration of mineral fertilizers in the irrigation pipeline. Technically, the fertilizer injector can be used in combination with various irrigation machines with a flow rate from 1 to 200 L/s. It is highly automated, efficient in terms of feeding the fertilizer solution into the irrigation water flow, uniformly doses the fertilizer solution, and improves the environment. Portable fertilizer injector can be set anywhere in the irrigation network. In the research, the feeding pressure was 0.34–0.36 MPa, the flow rate was 45 L/s, the wind speed was 0.80–1.55 m/s, the irrigation rate for the length of the electrified circular sprinkler machine Kuban-LK1 was 183–244 m3/ha, the concentration of fertilizers in irrigation water was 0.038–0.041%. The average watering insufficiency ratio was 0.13, watering redundancy ratio was 0.17, and irrigation efficiency ratio was 0.70. The irrigation uniformity ratio was 82.45% that indicates that the fertilizers dissolved in the indicated concentration did not significantly affect the irrigation uniformity.
Keywords: irrigation; multifunctional watering method; fertilizer application method; fertilizer injector; rain distribution; fertilizer concentration.
Author Details: I. A. Kostovarova, Cand. Sc. (Agr.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); S. L. Shlenov, senior research fellow; M. P. Zamakhovsky, Cand. Sc. (Phys.-Math.), senior research fellow.
For citation: Kostovarova I. A., Shlenov S. L., Zamakhovsky M. P. Irrigation Effectiveness Improvement Using Multifunctional Watering Method. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 3. Pp. 58–61 (in Russ.). DOI: 10.24411/0235-2451-2019-10315.