FIELD: agriculture.
SUBSTANCE: method comprises fixing the time of feeding the liquid fertiliser to agricultural fields of irrigation and volume of feeding the compressed air and oxygen released from it by directing the compressed air from the air supply pipe to the section with a partition and with a flexible inner protective coating and portion feeding the air by command of the relay time. Each section is fixed in the pipeline with a closed chamber, which alternates with the free part of the pipeline. Introduction of the protective coating having micropores enables through the partition in the form of a perforated tape to feed the pressurised air into the pipeline cavity. When filling the cavity of irrigation pipeline with sewage or livestock wastes, the compressed air is entered with the release of oxygen from it by directional action into the pipeline cavity along its length. Simultaneously the destruction of accumulation of silt, fine sediments and the release of harmful gases formed as a result of action of microorganisms from the accumulated silt is carried out. Irrigation is carried out to the fields of irrigation through an open hydrant-riser that enables to clean the closed irrigation pipeline with the flows. For preventive flushing of the irrigation pipeline after termination of fertilizing irrigation with the flows, pure water from the collector is used for flushing with simultaneous feeding the compressed air and released oxygen directly into the cavity of the pipeline, connected to the open disposal collector-drainage network through the valve of the downshaft.
EFFECT: opportunity to fill a cavity of the pipeline under pressure with less amount of pure water and release it from the accumulation of silt, sediment and harmful gas, and eliminate corrosion of pipeline walls after using liquid fertilisers for fertiliser irrigation.
2 cl, 6 dwg
