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Precise variable irrigation and fertilization implementation method for circular sprinkling machine

A technology for irrigating and fertilizing and implementing methods, which is applied in computer-aided design, forecasting, resources, etc., can solve problems such as shortage, uneven crop growth, and reduce water and fertilizer utilization efficiency, and achieve the effect of improving fertilizer utilization rate.

Active Publication Date: 2021-06-11
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when there are large differences in soil physical properties or crop growth at the scale of large farms, if the traditional uniform irrigation and fertilization is still used, it will cause excessive or insufficient irrigation and fertilization in local plots, not only causing uneven crop growth, but also significantly Reduce water and fertilizer use efficiency

Method used

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  • Precise variable irrigation and fertilization implementation method for circular sprinkling machine
  • Precise variable irrigation and fertilization implementation method for circular sprinkling machine
  • Precise variable irrigation and fertilization implementation method for circular sprinkling machine

Examples

Experimental program
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Effect test

Embodiment 1

[0079] like figure 1 Shown embodiment 1 of the present invention comprises:

[0080] 1) According to the irrigation and fertilization demand in the entire management plot provided by the irrigation and fertilization prescription map, divide the plot into several large management areas and small management areas, and calculate the area of ​​each management area according to the angle and radius;

[0081] The division method of the management area is: according to the irrigation and fertilization prescription information, centering on the central axis of the circular sprinkler irrigation machine, several fan-shaped spraying areas with different angles are divided along the circumferential direction, and then in each fan-shaped spraying area according to the difference in the amount of irrigation and fertilization and circular sprinkler nozzle groups are divided into different small management areas; if there is no difference in the amount of irrigation and fertilization in a fan...

Embodiment 2

[0148] 1) The first fan-shaped spraying area composed of 101 large management areas 1, the second fan-shaped spraying area formed by 201 small management areas 2 and 202 small management areas 3, and the 301 small management areas 4 and 302 small management areas 5. The third fan-shaped spraying area, the fourth fan-shaped spraying area composed of 401 large management areas 6, and the fifth fan-shaped spraying area composed of 501 large management areas 7;

[0149] The angles of the first fan-shaped spraying area, the second fan-shaped spraying area, the third fan-shaped spraying area, the fourth fan-shaped spraying area and the fifth fan-shaped spraying area are 30°, 60°, 45°, 35° and 10° respectively. The boundary of the 201 small management area 2 and the 202 small management area 3 in the second fan-shaped spraying area is located between No. 13 and No. 14 sprinklers (between the first span No. 13 and the second span No. 1), (the first 13 Total nozzle flow Q total13 =4.4...

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Abstract

The invention discloses a precise variable irrigation and fertilization implementation method for a circular sprinkling machine. The method comprises the steps: according to an irrigation and fertilization prescription map of a managed land parcel, dividing a plurality of groups of fan-shaped spraying areas by taking a central fulcrum shaft of a circular sprinkling machine as a center; if a single irrigation and fertilization prescription is adopted in the fan-shaped area, dividing the fan-shaped area into a large management area, and setting a unified set value of a percentage timer of the circular sprinkling irrigation machine, the working flow of a fertilizer injection pump and the duty ratio of a nozzle electromagnetic valve; if the fan-shaped area is composed of a plurality of different irrigation and fertilization prescriptions, dividing the fan-shaped area into a plurality of small management areas, and setting a unified percentage timer set value and a unified fertilizer injection pump working flow, wherein the small management areas correspond to different electromagnetic valve duty ratios; obtaining the residual clear water irrigation depth by subtracting the water and fertilizer liquid spraying depth from the designed irrigation depth of each management area, and then determining the clear water spraying percentage timer set value and the electromagnetic valve duty ratio. According to the invention, precise variable irrigation and fertilization of farmland scale management plots can be realized by using the circular sprinkling machine.

Description

technical field [0001] The invention belongs to the technical field of agricultural irrigation and fertilization, and specifically relates to a method for realizing precise variable irrigation and fertilization of a circular sprinkler irrigation machine. Background technique [0002] Water and fertilizer integration technology is a new agricultural technology that integrates irrigation and fertilization. It can supply water and nutrients to crops synchronously, evenly, accurately, regularly and quantitatively. It is also known as the "No. 1 Technology" in agriculture. billion mu. The integration of sprinkler irrigation, water and fertilizer is an important part of it. The circular sprinkler irrigation machine has the advantages of high automation, large single-machine control area, low operating cost, and strong adaptability to different crops and soil textures. It can also realize the integrated operation of sprinkler irrigation, water and fertilizer, and its application a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02G06F30/20G06F113/08
CPCG06Q10/043G06Q10/06313G06Q10/06393G06Q50/02G06F30/20G06F2113/08Y02A40/22
Inventor 严海军王晶晶卓越李茂娜
Owner CHINA AGRI UNIV
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