Water and fertilizer integrated irrigation and fertilization system for surface irrigation

Abstract

The invention provides a water and fertilizer integrated irrigation and fertilization system for ground irrigation. The system includes: a fertilization system and a low-pressure pipeline for transporting the water and fertilizer solution in the fertilization system to the field; wherein, the fertilization system includes: a fertilizer dissolving device, a fertilizer injection device and an intelligent control device; the fertilizer dissolving device It includes: a fertilizer feeding port, a water inlet and a water and fertilizer solution outlet, and a first valve is arranged at the water inlet; the fertilizer injection device includes: a fertilizer inlet connected to the water and fertilizer solution outlet and the low pressure pipeline A connected fertilizer injection port; a second valve is provided between the fertilizer solution outlet and the fertilizer inlet; a third valve is provided between the fertilizer injection port and the low-pressure pipeline; the first The valve, the second valve and the third valve are all connected with the intelligent control device. By synchronizing the irrigation flow rate with the fertilizer injection rate, it can meet the needs of water and fertilizer synchronization under the condition of surface irrigation and furrow / furrow irrigation.

Description

technical field [0001] The invention relates to the technical field of farmland irrigation, in particular to a water and fertilizer integrated irrigation and fertilization system for ground irrigation. Background technique [0002] Surface irrigation is an ancient and widely used irrigation method that uses ditches, furrows or lattice fields as the water receiving interface, so that the water entering the field can penetrate into the root zone of crops under gravity and capillary action, and moisten the soil. According to the way irrigation water infiltrates into the soil, surface irrigation can be divided into border irrigation (irrigation water flows along the length of the border in the form of a thin layer of water flow on the border surface under the action of gravity, and at the same time vertically infiltrates into the soil to infiltrate the soil), furrow irrigation (irrigation Water flows in the ditch along the length of the ditch, part of the water soaks the soil th...

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Problems solved by technology

[0008] Aiming at the problem that the existing drip irrigation / micro-irrigation water and fertilizer integrated fertilization system is not suitable for ground irrigation, the present invention provides a water and fertilizer integrated irrigation and fertilization system for ground irrigation, through "irrigation flow and fertilizer injection rate synchronization", The concentration of water and fertilizer solution in irrigation water can be highly synchronized with the irrigation demand, so as to meet the needs of water and fertilizer synchronization for border / furrow irrigation and wheel irrigation under surface irrigation conditions

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