Water and fertilizer integrated drip irrigation system with calibration device and calibration method

Abstract

The present invention provides a drip fertigation system with a correction apparatus, comprising a water supply device, a fertilizer supply device, a fertilizer applying apparatus and a correction apparatus, wherein the fertilizer supply device includes a fertilizer liquid barrel, and a fertilizer outlet pipe which is communicated with the lower portion of the fertilizer liquid barrel, the fertilizer outlet pipe being provided with a stop valve-1; wherein the correction apparatus includes a liquid absorbing pipe which is inserted inside the fertilizer liquid barrel for absorbing the fertilizer liquid, and a correction column which is communicated with the tail end of the liquid absorbing pipe, the lower end of the correction column being communicated with the fertilizer output pipe via a stop valve-2; wherein the fertilizer applying apparatus includes a pump for injecting fertilizer and adding agricultural chemicals whereby the fertilizer liquid is mixed with water automatically and will subsequently be pumped into the field. The drip fertigation system with the correction apparatus and the correction method of the present invention have the advantages of simple theory and handling, easy realization of system and structure, easy mounting and dismounting, easy carrying, low energy consumption and long service life, and can increase the flow accuracy of the pump for injecting fertilizer and adding agricultural chemicals of the drip fertigation system in the field.

Description

technical field [0001] The invention belongs to the technical field of drip irrigation, in particular to a water and fertilizer integrated drip irrigation system with a correction device and a correction method. Background technique [0002] Drip irrigation is a modern high-efficiency water-saving irrigation technology that can locally control irrigation according to the water demand of crops. It is still one of the most water-saving irrigation technologies for farmland irrigation so far. With the help of the drip irrigation pressure irrigation system, the fertilizer liquid mixed with soluble solid fertilizer or liquid fertilizer and irrigation water is evenly and accurately delivered to the root soil of the crops, realizing the new agricultural technology of water and fertilizer integration. Water and fertilizer integration technology can directly provide water and nutrients to crops in a timely, quantitative and proportional manner according to the growth needs of crops in...

AI Technical Summary

Problems solved by technology

However, in the actual operation of the drip irrigation system, due to factors such as unstable working voltage and filter clogging, the water flow and pressure in the water supply pipeline cannot be kept constant, which leads to the "proportionality" of the proportional fertilizer injection pump. Reliability is reduced, and the application dose cannot be kept constant and accurate for a long time, which greatly reduces the quality of fertilization and dosing, which in turn affects the normal growth of crops

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