METHOD OF IRRIGATION ON FURROWS WITH VARIABLE FLOW AND DEVICE FOR ITS IMPLEMENTATION

摘要

FIELD: agriculture. ^ SUBSTANCE: group of inventions relates to a method of irrigation with variable flow on furrows located across the line of hydrants and a device for positional irrigation on furrows cut across the line of hydrants. The method provides consistent irrigation of the irrigated area with simultaneous irrigation of two adjacent irrigated plots with separate supply to them of rate of lag. Then post-humidification of irrigated plots is carried out with a break with corresponding combinations of the supplied flows and furrow length on irrigation periods of equal duration. The value of the reduced water flow is designated according to the length of its promotion along the moistened furrow for a time equal to the travel time of the initial flow on the dry furrow of equal length. The device comprises a multisupporting wheel pipeline equipped with a driving truck, water-intake rotating sleeves. The multisupporting wheel pipeline is equipped with a driving truck, a unit of connection to the irrigation network. The water-intake rotating sleeves are evenly mounted along the water conducting pipeline length. Irrigation stubs are connected to the water-intake rotating sleeves with the corresponding sequence and length. The irrigation stubs are functionally divided into sections by length. The sections are multiple of distance between the hydrants. The sections of short irrigation stubs are combined with corresponding functional sections of long stubs. Long stubs are mounted on each rotating sleeve. The lower sections of irrigation stubs are made of smaller diameter and are equipped with water outlets. ^ EFFECT: invention enables to improve the efficiency of reduction of end discharges from irrigation furrows in the period of post-humidification at positional irrigation and to increase the reliability of the device operation. ^ 3 cl, 3 dwg