Method and device for uniform fertilization in differential pressure fertilization tank considering fertilizer dissolution

Abstract

The embodiment of the present invention provides a method and device for uniform fertilization in a pressure difference fertilization tank considering fertilizer dissolution, the method includes: calculating the concentration of the outlet fertilizer solution over time through the calculation of the dissolution source item; calculating the concentration of the fertilizer solution at the outlet to obtain the Dissolved differential pressure fertilization tank During the uniform fertilization process, the flow rate entering the differential pressure fertilization tank and the flow directly flowing through the main pipeline into the irrigation and fertilization system change with time, and determine the total time of uniform fertilization; real-time control of the differential pressure fertilization through the valve The flow of the tank and the flow directly flowing through the main pipeline into the fertigation system; the total flow of the pressure differential fertilization tank is connected to the fertigation system through the main pipeline for fertilization. Through real-time control of the flow rate entering the pressure difference fertilization tank and the flow directly flowing through the main pipeline into the irrigation and fertilization system, the concentration of the fertilizer liquid entering the irrigation and fertilization system is kept suitable for a long time, and the fertilization of the pressure difference fertilization tank in the integrated water and fertilizer fertilization operation is improved. Uniformity.

Description

technical field [0001] The invention relates to the field of fertilization equipment and methods for agricultural water and soil engineering, in particular to a method and device for uniform fertilization in a differential pressure fertilization tank considering fertilizer dissolution. Background technique [0002] Pressure differential fertilization tanks are low in cost, easy to operate and maintain, insensitive to system flow and pressure fluctuations, and do not require additional power. They are widely used in my country's integrated water and fertilizer fertilization operations. In order to save water resources during irrigation, sprinkling irrigation and micro-irrigation are generally used in irrigation of crops. During the fertilization process of crops, fertilizers are added to the irrigation pipes of water-saving irrigation through pressure difference fertilization tanks to achieve water and fertilizer saving. purpose of irrigation. [0003] Most of the pressure d...

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Problems solved by technology

[0005] The embodiment of the present invention provides a pressure difference fertilization tank uniform fertilization method and device considering fertilizer dissolution, which is used to solve the problem of continuous dissolution of fertilizer in the tank in the prior art, and the concentration of fertilizer liquid entering the irrigation and fertilization system tends to decay with time, which leads to Eliminate the defects of uneven fertilization on farmland, realize the long-term suitable concentration of fertilizer solution entering the irrigation and fertilization system, and improve the uniformity of fertilization in the pressure difference fertilization tank in the integrated water and fertilizer fertilization operation

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