Irrigation and fertilization device, system and method

Abstract

The invention discloses an irrigation and fertilization device, system and method. The irrigation and fertilization device comprises a water source pipeline and at least one irrigation and fertilization unit communicated with the water source pipeline; each of the irrigation and fertilization units comprises a fertilizer storage tank, a mixer, a clear water irrigation valve, a fertilizer water irrigation valve and a flowmeter; the clear water irrigation valve and the flowmeter are sequentially communicated, and the inlet end of the clear water irrigation valve is communicated with a water source by using a pipeline; the fertilizer water irrigation valve and the mixer are sequentially communicated, the inlet end of the fertilizer water irrigation valve is communicated with the inlet end ofthe clear water irrigation valve, and the outlet end of the mixer is arranged between the clear water irrigation valve and the flowmeter; and the inlet end of the fertilizer storage tank is communicated with the water source pipeline, and the outlet end of the fertilizer storage tank is communicated with the mixer. The irrigation for soil is controlled by the mixers, the clear water irrigation valves and the fertilizer water irrigation valves, and each of the irrigation and fertilization units is provided with the flowmeter, so that the precise control on the irrigation quantity is realized, diversified irrigation demands are met, and the demand for water and fertilizer management required by soil cultivation is met.

Description

technical field [0001] The invention relates to the field of agricultural automation, in particular to an irrigation and fertilization device, an irrigation and fertilization system and an irrigation and fertilization method. Background technique [0002] Agriculture is still the foundation of our national economy. For crops planted in the field, the traditional irrigation method is to divert water from the surface to moisten the soil in the field. This irrigation method has poor uniformity and wastes a lot of water resources. When fertilizing crops, artificial fertilization is used, and then irrigation is performed after fertilization. So that the fertilizer is dissolved and soaked into the soil for the crops to absorb, this method of fertilization is uneven, and it is easy to cause waste of fertilizer. [0003] The water and fertilizer integrated equipment currently being promoted is all controlled by the EC value of the nutrient solution. Its advantage is that the fertil...

AI Technical Summary

Problems solved by technology

For crops planted in the field, the traditional irrigation method is to divert water from the surface to moisten the soil in the field. This irrigation method has poor uniformity and wastes a lot of water resources. When fertilizing crops, artificial fertilization is used, and then irrigation is performed after fertilization. So that the fertilizer is dissolved and soaked into the soil for crops to absorb. This method of fertilization is uneven and easy to cause waste of fertilizer.

[0003] The water and fertilizer integrated equipment currently being promoted is all controlled by the EC value of the nutrient solution. Its advantage is that the fertilizer can be applied at once. However, for soil cultivation, which requires flushing pipes, or requires precise control of single fertilization Water and fertilizer integration equipment currently promoted has certain limitations

On the one hand, the control method using EC value as the control index is too dependent on sensors, and cannot be accurately converted into the amount of fertilizer used

On the other hand, the traditional water and fertilizer integrated equipment can only irrigate in rotation when the area is controlled, and the areas cannot be independent of each other.

Most importantly, although the soil buffer capacity is strong, empirical water and fertilizer control is usually supplemented with sufficient water and fertilizer at intervals. In the long run, it is likely to cause high salinity in the soil or water leakage, which is seriously wasteful and unnecessary. In line with the concept of sustainable development

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