JPH06276868A - Method for totally controlling irrigation of paddy field including flood control in area unit - Google Patents

Abstract

PURPOSE:To manage a paddy field finely with reduced labor by equipping the paddy field with water level indicators, control valves for regulating water supply and drainage and pipe lines for adjusting a water level. CONSTITUTION:Each paddy field is equipped with level indicators 9, 10, 11 and 12, pipe lines 17 and 18 for adjusting a water level and motor-driven valves 13, 14, 15 and 16 for regulating water supply and drainage and underdrainage. Water in the pipe lines for adjusting a water level in the direction opposite to the surface of a paddy field by pressure difference caused by change of water level between the windward and the leeward in the case of wind blowing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for comprehensive management of water in paddy fields and flood control in that area.

[0002]

2. Description of the Related Art In conventional paddy field irrigation, the work is done separately, such as by supplying and draining each farmer to be cultivated. Even if one paddy field in the country requires water supply, the water flowing through the river 1 is guided to the water supply channel 3 by using the water supply pump 2 and the water port 4 is opened there to supply water to the paddy field 5, and also during this time. Since the excess water in the above flowed to the drainage channel 7, the drainage pump 8 had to be kept operating.

Therefore, the water supply pump 2 and the drainage pump 8 must be constantly operated during that time, resulting in wasteful consumption of energy and water.

[0004] Further, with the recent increase in the size of paddy fields, the growth of crops within the paddy fields has varied due to the difference in water level between the windward and leeward areas due to the wind.

[0005]

In the conventional paddy field irrigation (including drainage), water was supplied in excess of the amount of water actually used or drainage was performed in the same manner. Therefore, energy resources and water resources were saved. There was a problem of wasting and a difference in water level between the windward and the leeward due to the wind, and the difference caused the variation in yield and quality.

Further, since there is no technology for stirring water in paddy fields, water-soluble and floating pesticides and fertilizers do not work well, and methods such as aerial spraying with a helicopter sprinkle them, causing pollution problems. There was a problem that there was a danger such as a crash.

[0007]

In order to solve the above-mentioned problems, the irrigation method of the present invention is capable of remotely controlling a water level monitor 9/10/11/12 for water level in a paddy field and remote control for water supply / drainage and underdrain drainage control. Control valves 13,14,15,16, conduits 17 for water level adjustment to keep the water levels upwind and leeward constant
18 is provided.

Although it is possible to stir the water only with the water level adjusting pipes 17 and 18, in addition, the water flow pumps 19 and 20 for forcibly stirring the paddy water and the water to the pumps. The control valve 13 for controlling the water flow, or a pump that uses electric power such as electric power, flow meters 21 and 22 for measuring the flow rate of water supply and drainage, and a paddy field monitoring control panel 23 that monitors and controls each device on site. The area control device 24 for controlling, the area management center 25 for monitoring and controlling each area control device, and the terminal device 2 installed in each farmer 26 for monitoring and controlling the state of each paddy field, if necessary.
7 provides a comprehensive control method for paddy field irrigation including flood control on a regional basis, which is characterized by operating the above-mentioned paddy field water management.

That is, in each paddy field, a water level gauge 9/10/11/12 as shown in FIG.
By providing the pipes 17 and 18 for adjusting the water level, the water management of the paddy field and the flood control of the area of the present invention can be performed.

[0010]

The operation of the present invention will be described with reference to FIGS. 2, 3 and 4.

In other words, looking at the current relationship between the wind direction and the water level in the paddy field, in the case of no wind and slight breeze, the water is horizontally stretched as shown in FIG.

When the wind blows strongly here, the water stretched over the paddy as shown in Fig. 3-2 rises on the leeward side (left in the figure) and rises on the upwind side (right in the figure). Goes down.

If the wind becomes stronger than this condition,
As shown in Fig. 3, there is no submergence on the windward side, and in this state, there is a large difference in the growth situation of the crops on the upwind side and the leeward side.

Therefore, in the present invention, the pipes 17 and 18 for adjusting the water level are provided in the basement of the paddy field, and the pressure difference due to the change in the water level between the upwind side and the downwind side when the wind blows as shown in FIG. 3-3. The water in the pipe for adjusting the water level started to flow in the direction opposite to the paddy field (leeward to leeward).

As a result, before the improvement, water is always naturally supplied to the windward side where no submergence occurs.

Further, as shown in FIG. 3-5, the water level adjusting pipes 17 and 18 are laid so as to intersect with each other, and the waterway dividing separator 28 and the waterway dividing separator 29 are installed so that the surface of the paddy field is directed toward the wind. The water collected in the upper part of the figure from the separator 28 of the waterway 30 flows through the pipe 18 to the lower side of the figure from the separator 29 of the waterway 31, and passes through the lower side of the figure of the paddy field due to wind force and wind direction. Gather from the separator 28 of FIG.

This water passes through the pipe 17 and flows from the separator 29 of the water passage 31 to the surface of the paddy field from above.

[0018] By repeating this, in the current paddy field, there was a problem that the water level difference between the upwind side and the leeward side became a problem, but in the present invention, the wind field and the wind direction are utilized, and the water level difference is minimized while minimizing the water level difference. Made it possible to stir water.

If the wind power is strong and the water level difference is large even from the above points, the water flow pump 1 provided in the water level adjusting pipes 17 and 18
Open the water supply control valve 13 connected to 9/20,
The water is pumped to the water level adjusting pipes 17 and 18.

Incidentally, the normal replenishment of water is performed by opening the control valve 13 connected to the water flow pumps 19 and 20. As a result, the water temperature at the water intake (water inlet) is minimized, and at the same time water can be stirred.

However, the agitating pump is not limited to the water flow pumps 19 and 20, but may be used by other power such as water turbine or wind turbine depending on the electric power situation and other power circumstances.

[0022] When it becomes possible to efficiently agitate paddy water, the water-solubility
Fertilizers, pesticides, and other chemicals that have similar floating properties can be effectively used.

Therefore, the required number of drug tanks 3 shown in FIG.
2.33.34 is installed, and the remote control valve 35 for putting it in.
The 36 and 37 are remotely controlled so that unmanned chemicals can be effectively charged.

However, when it is desired to supply water promptly, such as when the amount of water supply is not enough, the normal control valve 14 is opened to supply water.

In addition, a water temperature gauge 38 for monitoring the water temperature is provided.

Further, each drainage pipe of the drainage for lowering the water level and the underdrain drainage 39 for lowering the groundwater level is provided with electrically operated valves 15 and 16 which can be remotely controlled.

Each of the water supply and drainage pipes is provided with a flow meter 19, 20, 21, 22 for measuring the flow rate thereof, so that leakage of water in the paddy field can be physically grasped at an early stage by monitoring the flow rate.

The regional management center 25 has a function of controlling the water level, the water temperature, and the water flow (stirring of the rice field) while constantly monitoring the water level water temperature of each paddy field and the weather information of the area. It has a function to provide information such as current water level information and weather information for each paddy field and to obtain control instructions.

Each farmer submits (reserves) in advance the water level water temperature, the timing of inputting chemicals (fertilizer, pesticide, etc.) and the inputting amount in advance, and the appropriate data based on the numerical data obtained from the regional management center 25. Instruct to change.

This information exchange is performed for each farmer by the terminal device 27 installed or by tele control by telephone or the like.

In addition, when heavy rain is predicted, depending on the amount of rain, about 24 hours to 48 hours is usually used as a guide, while the expected amount of water from each paddy field is sequentially drained in advance,
To prevent the rain from spilling a large amount of water downstream,
It is possible to control with a flood control effect that naturally controls.

This is also suitable for application in the suburbs of a large city or in the case where there is a city in the downstream or in a geographical area where it is difficult to form a dam.

FIG. 4 shows a flow chart of the above basic monitoring control, and FIG. 5 shows an outline of the area.

[0034]

[Examples] Fig. 6-1 compares the monthly working hours required for paddy field water management and spraying of fertilizers and pesticides, and Fig. 6-2 compares the monthly amount of pumped water supplied to the paddy fields with that of the prior art. Show.

From this figure, according to the control method of the present invention, the working time can be saved by about 90%, and the amount of supplied water and its power can be saved by about 50%.

[0036]

[Effects of the Invention] As described above, when the paddy field is provided with a comprehensive water management control function on a regional basis, it is possible to solve the problem of the water level difference caused by the wind in the large-scale paddy field, which will increase more and more in future. , It becomes possible to effectively use fertilizers and pesticides by the stirring function of paddy field water, save labor of spraying, and prevent poor growth due to low water temperature near the mouth of the paddy field water.

Further, by utilizing the present invention, fine control of paddy fields can be performed labor-savingly, homogenization of the crops can be achieved, and Mita can be left permanently.

Furthermore, each farmer can be freed from complicated farm work by submitting and making a reservation for a work program throughout the year in advance, which can be a measure for the aging of the region and the part-time work.

As a side effect, it becomes possible to make the paddy field, which is not currently used for anything other than cultivation, to have a positive flood control effect in the basin.

In this way, by controlling the water supply and drainage to the paddy fields collectively, it becomes possible to sequentially control the water supply and drainage, and the water supply and drainage pipeline and the pumping and drainage facility with the minimum required amount can be obtained by the method of the present invention different from the present. It is also possible to design in.

[0041]

[Brief description of drawings]

FIG. 1 shows a conventional water supply / drainage channel system for a paddy field.

FIG. 2 shows equipment of each paddy field of the present invention.

FIG. 3 shows the operation of the present invention.

FIG. 4 shows a basic control flowchart of the present invention.

FIG. 5 shows a system within the area of the present invention.

FIG. 6 shows an embodiment according to the method of the present invention.

[Explanation of symbols]

 1. River 2. Pumping pump 3. Water supply channel 4. Water inlet (water intake) 5. Paddy field 6. Drainage port 7. Drainage channel 8. Drainage pump 9. Water level gauge 10. Water gauge 11. Water level gauge 12. Water level gauge 13. Remote control valve for water flow pump (also doubles as normal water supply) 14. Remote control valve for water supply 15. Remote control valve for drainage 16. Remote control valve for drainage 17. Water level adjustment pipe 18. Water level adjustment conduit 19. Water flow pump 20. Water flow pump 21. Flowmeter for measuring water supply 22. Flowmeter for measuring wastewater 23. Paddy field monitoring and control panel 24. District control device 25. Regional Management Center 26. Farmer 27. Terminal device installed in farmhouse 28. Separator for waterway division 29. Waterway division separator 30. Waterway 31. Waterway 32. Fertilizer chemical tank 33. Fertilizer chemical tank 34. Fertilizer chemical tank 35. Remote control valve for introducing fertilizer chemicals 36. Remote control valve for fertilizer drug input 37. Remote control valve for introducing fertilizer chemicals 38. Water thermometer 39. Anko drainage pipe

Claims (1)

[Claims] 1. A water level gauge for monitoring a water level in a paddy field, a remotely controllable motor-operated valve for water supply / drainage and underdrain drainage control, a water level adjustment conduit for forcing a constant upwind and leeward water level, and forcibly. Electric valves and water flow pumps for stirring water, or pumps using electric power such as electric power, flow meters for measuring the flow rate of water supply and drainage, district control devices for supervisory control, supervisory control of each district controller Comprehensive control method for paddy field irrigation including flood control on a regional basis, which is operated by a regional management center and a terminal installed in a farmer to monitor and control the condition of each paddy field.