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Ecological intelligent management and control method, device and system for saline-alkali soil rainwater irrigation and drainage

A technology for control devices and saline-alkali land, applied in control/regulation systems, liquid level control, non-electric variable control, etc., can solve problems such as time-consuming, labor-intensive and costly, and achieve the effects of saving manpower and material resources, protecting growth, and good application prospects

Pending Publication Date: 2022-04-26
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using irrigation and drainage to treat saline-alkali land is a relatively common method, but generally water is diverted to the field manually, and the water is drained after soaking, which is time-consuming, laborious and expensive

Method used

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  • Ecological intelligent management and control method, device and system for saline-alkali soil rainwater irrigation and drainage
  • Ecological intelligent management and control method, device and system for saline-alkali soil rainwater irrigation and drainage
  • Ecological intelligent management and control method, device and system for saline-alkali soil rainwater irrigation and drainage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] First collect data and select a whole piece of farmland for grouping, such as figure 2 As shown, the ten fields are divided into two groups, A and B, which are marked as A 1、 A 2 、A 3 、A 4 、A 5 , B 1 , B 2 , B 3 , B 4 , B 5 , according to the highest water level of the farmland unit is H = 0.08m, the gate height is h = 0.5m (0.23m for the underground part, 0.27m for the aboveground part), and the field soil drainage time t is measured through experiments according to the climate and soil conditions 2 = 48h, choose plants that are more resistant to water immersion 0 =70h (sea rice), the time t when a large amount of salt ions in the soil begin to dissolve in the water 1 = 23h. Each farmland according to image 3 way, excavate the gate, and install a controllable gate. Mark the installed valves with a group number, connect the computer and the controller, and the first one of each group will run as follows:

[0060] When A1 runs for the first time, T=0,S 1...

Embodiment 2

[0062] Such as figure 2 As shown, the ten fields are divided into two groups, A and B, which are marked as A 1、 A 2 、A 3 、A 4 、A 5 , B 1 , B 2 , B 3 , B 4 , B 5 , according to the highest water level of the farmland unit is H = 0.08m, the gate height is h = 0.5m (0.23m for the underground part, 0.27m for the aboveground part), and the field soil drainage time t is measured through experiments according to the climate and soil conditions 2 = 48h, choose plants that are more resistant to water immersion 0 =70h (sea rice), the time t when a large amount of salt ions in the soil begin to dissolve in the water 1 = 23h. Each farmland according to image 3 way, excavate the gate, and install a controllable gate. Mark the installed valves with a group number, connect the computer and the controller, and the first one of each group will run as follows:

[0063] A1 runs the program for the second time, S 21 = 0, moderate rain at 6:00 in the morning (q = 11mm), S 21 = cu...

Embodiment 3

[0065] Such as figure 2 As shown, the ten fields are divided into two groups, A and B, which are marked as A 1、 A 2 、A 3 、A 4 、A 5 , B 1 , B 2 , B 3 , B 4 , B 5 , according to the highest water level of the farmland unit is H = 0.08m, the gate height is h = 0.5m (0.23m for the underground part, 0.27m for the aboveground part), and the field soil drainage time t is measured through experiments according to the climate and soil conditions 2 = 48h, choose plants that are more resistant to water immersion 0 =70h (sea rice, etc.), the time t when a large amount of salt ions in the soil begin to dissolve in the water 1 = 23h. Each farmland according to image 3 way, excavate the gate, and install a controllable gate. Mark the installed valves with a group number, connect the computer and the controller, and the first one of each group will run as follows:

[0066] Run the program for the third time, S31=0, the weather forecast shows that it is sunny (q=0), then contin...

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Abstract

The invention discloses an ecological intelligent management and control method, device and system for saline-alkali soil rainwater irrigation and drainage, and the method comprises the steps: firstly judging the rainfall intensity and the time interval from last gate opening and drainage after a weather forecast is accessed, determining whether to continue to open a gate or close the gate, and then judging when to open the gate for drainage again according to the precipitation amount and the hydraulic retention time; by accessing weather forecast information, relevant judgment is carried out to automatically control opening and closing of the gate, so that the purposes of timely opening the gate to discharge water and maximizing the salt discharge capability of rainwater are achieved. The small farmland blocks are classified according to the areas of the small farmland blocks, the small farmland blocks can be divided into one group when the area difference is + / -15%, and the small farmland blocks are averagely grouped if the areas are similar, so that the salt in the saline-alkali soil can be removed within effective time, the plant roots are prevented from being damaged, the situation that the salinity removal is insufficient due to insufficient soaking time is avoided, and the opening and closing of the ridge gate valve are intelligently controlled.

Description

technical field [0001] The invention belongs to the technical field of ecological agriculture management and control, and relates to an ecological intelligent management and control method, device and system for rainwater irrigation and drainage of saline-alkali land. Background technique [0002] Regulating water and salt through irrigation and drainage measures is an important way to improve saline soil, which is of great significance for developing and utilizing reserve field resources, increasing grain production, and ensuring food security. The Yellow River irrigation area in the middle and lower reaches of the Yellow River in my country developed rapidly in the 1950s and 1960s, but due to the secondary salinization of the soil, irrigation was once forced to stop. It can be seen that the success or failure of water and salt regulation in irrigation areas is directly related to the secondary salinization of soil and the pollution of drainage and discharge areas, which ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12
CPCG05D9/12
Inventor 祝建中朱秋子张欢陈靓马剑波
Owner HOHAI UNIV