Paddy field automatic intelligent irrigation system and method of using the system for farmland irrigation

Abstract

The invention relates to an automatic intelligent paddy field irrigation system, and further relates to a method for irrigating fields by the aid of the same. The automatic intelligent paddy field irrigation system is characterized by comprising a lift pump station, irrigation ditches, automatic field irrigation control devices and paddy field soil moisture monitoring devices; paddy field soil moisture controllers can control actions of a lift pump on-off controller according to signals outputted by liquid level meters, water can be supplied to the irrigation ditches by lift pumps, and irrigation water in the irrigation ditches can be automatically filled into the fields or can automatically stop being filled into the fields by the aid of the automatic field irrigation control devices according to water levels of the fields. The automatic intelligent paddy field irrigation system and the method have the advantages that the automatic intelligent paddy field irrigation system is simple in structure and convenient to maintain; the problem of difficulty in popularizing a novel shallow-wet paddy rice irrigation planting technology can be solved, and the automatic intelligent paddy field irrigation system and the method have an important practical significance on precision irrigation, water conservation and efficacy enhancement of irrigation and water conservation at the current stage in China.

Description

technical field [0001] The invention relates to an automatic and intelligent irrigation system for paddy fields, and also relates to a method for using the system to irrigate farmland. Background technique [0002] Rice is the main food crop in my country. The traditional flooding cultivation mode not only consumes a lot of water, but also wastes water resources seriously, has low water use efficiency, and is easy to cause environmental non-point source pollution. With the growth of population and the rapid development of economy in our country, water shortage has become one of the most serious strategic problems facing our country, seriously restricting the sustainable development of agriculture. Research results at home and abroad show that rice has certain amphibious characteristics of flood and drought, and has great potential for water saving. [0003] The traditional flooding cultivation mode began to gradually change to the water-saving cultivation mode. Water-savin...

AI Technical Summary

Problems solved by technology

Although the currently commonly used method of taking soil and drying and weighing measures accurate data, it has a large workload and cannot provide data in time; the neutron soil moisture meter has a large investment, and the measurement of surface soil moisture is not accurate; it is made by using the principle of resistance and capacitance. Various moisture meters (such as soil moisture meters, moisture detectors, etc.) have large errors in the measurement of soil moisture close to the field water holding capacity (high moisture segment); mercury negative pressure meters can measure more accurate soil water suction, However, there are certain difficulties in operation and management for large-scale promotion and application

[0006] Second, when rice is being irrigated, the irrigation water from the diversion canal generally flows directly into the farmland, or is pumped in through a pump, resulting in a huge waste of water resources, which does not meet the requirements of water-saving irrigation technology; A device that uses mechanical or electrical methods to detect the water level, and then controls the water supply and drainage

The water supply and drainage control method of electrical control has high precision and is suitable for a wide range of water level control, but it has high requirements for the working environment, and it is necessary to ensure normal power supply and keep the cleanliness of the sensor; while the actual use environment of farmland irrigation is relatively poor. Poor, it will affect the normal and accurate work of the detection sensor, and it is inconvenient to use electricity, so it is not easy to promote the use of electrical water supply and drainage devices

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