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Irrigation and fertilization system based on crop environment cooperative feedback

A fertigation and crop irrigation technology, applied in liquid fertilizer adjustment system, fertilization device, liquid fertilizer distribution, etc., can solve the problem that the control algorithm cannot meet more and more refined requirements, and achieve the effect of precise irrigation

Inactive Publication Date: 2018-05-11
SHANGHAI HUAWEI WATER SAVING IRRIGATION CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an irrigation and fertilization system based on crop environment collaborative feedback, aiming to solve the problem that the existing crop irrigation and fertilization system cannot meet the increasingly refined requirements in terms of control algorithm

Method used

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  • Irrigation and fertilization system based on crop environment cooperative feedback
  • Irrigation and fertilization system based on crop environment cooperative feedback
  • Irrigation and fertilization system based on crop environment cooperative feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Example 1: After the power is turned on, the small weather station, soil moisture sensor, and leaf area index measuring instrument are working normally. Before irrigation, the data collected by each sensor is fed back to the controller, and the controller calculates the irrigation plan according to the program. When only irrigation is required, the controller opens the main solenoid valve A, main solenoid valve B, and water pump according to the irrigation plan, and closes the branch solenoid valve A, branch solenoid valve B, and fertilization pump. The water flows through the water inlet pipe, main filter, water pump, and main pipe. Solenoid valve A, main solenoid valve B, main flow main flow meter, reach the field. After irrigation, each sensor collects data again and feeds it back to the controller, and the controller updates the irrigation plan according to the program operation to guide the next irrigation.

Embodiment 2

[0072] Embodiment 2: switch on the power supply, small-scale weather station, soil moisture sensor, leaf area index measuring instrument work normally, assume that the soil layer is a single homogeneous soil layer of the lower layer of the relatively impermeable layer, carry out water balance calculation, update the daily soil content Changes in water volume.

[0073] After measuring the sunshine hours, air pressure, temperature, air humidity, precipitation, wind speed at a height of 2 meters in the microclimate environment, solar radiation, field water holding capacity, field water holding rate, water saturation, soil water content at withering point, and wilting coefficient , leaf area index and other parameters are transmitted to the controller for data processing and calculation to obtain infiltration, potential infiltration, potential crop transpiration, soil surface potential evaporation, potential evaporation, etc., and further calculation to establish a data model. Cre...

Embodiment 3

[0144] Embodiment 3: When fertilization is required, after the controller forms an irrigation plan, it automatically closes the main solenoid valve B, opens the main solenoid valve A, the branch solenoid valve A, the branch solenoid valve B, the water pump, and the fertilization pump to regulate the amount of irrigation water and fertilization.

[0145] The flow meter measures the flow Q of the main pipe and the delivery pipe 1 and Q 2 , Q 2 with Q 1 There is an inevitable relationship between the ratio and the fertilizer concentration. Taking potassium chloride (KCL) water-soluble fertilizer as an example, assuming that the temperature is 25°C, the relationship between the EC value and the concentration of KCl solution is as follows: Figure 5 shown. refer to Figure 5 , according to the EC value fed back by the EC measuring instrument, the controller guarantees that Q 1 Under the condition of constant, adjust the Q by adjusting the metering pump 2 size, or in the guar...

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Abstract

An irrigation and fertilization system based on crop environment cooperative feedback comprises a meteorological station, a soil humidity sensor, a leaf area index measuring instrument and a controller. After the meteorological station, the soil humidity sensor and the leaf area index measuring instrument obtain the sunshine duration, air pressure, air temperature, air humidity, precipitation amount, small climate environment 2-meter high wind speed, solar radiation, field water holding capacity, field water holding rate, water saturation degree, moisture content of withering point soil, a wilting coefficient and leaf area index parameters related to growth of crops, the parameters are transmitted to the controller for data processing and calculation, the infiltration amount, the potentialinfiltration amount, the potential crop transpiration amount, the soil surface potential evaporation amount and potential evaporation amount parameters are obtained, and a mathematical model is further established through calculation to form an irrigation plan.

Description

technical field [0001] The invention belongs to the technical field of modern agriculture, and in particular relates to an irrigation and fertilization system based on crop environment synergistic feedback. Background technique [0002] The patent document with the publication number CN102165876A discloses "an intelligent water-saving irrigation and fertilization system, which is characterized in that the system includes: a management control unit, a core processing unit, a communication unit, a soil environment detection unit, a water use detection unit, and a fertilization control unit. unit and watering control unit; wherein, the management control unit receives remote / local instructions from managers through the communication unit and forwards them to the core processing unit; the core processing unit automatically or responds to the instructions to the The environment detection unit and / or the water use detection unit sends a state parameter collection instruction, gene...

Claims

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Application Information

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IPC IPC(8): A01C23/00A01G25/16
CPCA01C23/007A01G25/167
Inventor 张中华吕名礼黄丹枫常丽英吴小李苗玉彬李鸣欧金华杨富军
Owner SHANGHAI HUAWEI WATER SAVING IRRIGATION CORP LTD
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