Under the national food security initiative, large-scale intelligent irrigation of farmland is ushering in an era of smart agriculture.

　　Many countries are now facing food security issues, exacerbating an already difficult situation. Domestically, however, concerns about food security are largely ignored because there are no shortages; on the contrary, agricultural technology has made significant progress.
    With the application of technologies such as the Internet of Things, remote sensing, and wireless transmission, smart agriculture is gradually being introduced throughout the country. For example, intelligent vegetable greenhouses in Shouguang, Shandong, and southern blueberry greenhouses are all moving towards digital agriculture. Even for staple crops requiring large-scale, open-field cultivation, intelligent irrigation methods are now available.

　　For large-scale farmland (referred to as 'open fields'), irrigation often requires manual intervention due to the large area, high wiring costs, and difficulties in maintenance, resulting in low efficiency. However, the open-field agricultural irrigation system utilizes LoRa wireless communication technology, along with wireless control terminal equipment, for remote and intelligent irrigation of large fields.
　Based on data from soil temperature and humidity sensors and other sensing devices, the system monitors field humidity, environmental components, and other data. Combined with the different physiological stages of crops, it remotely controls the start and stop of irrigation valves, digitally controlling irrigation timing and volume, and saving water.

　　The open-field agricultural irrigation system is based on LoRa, 4G, and other communication technologies. Through LoRa gateways, wireless control terminals, and data acquisition terminals, combined with a remote management cloud platform, it automates data acquisition and remotely controls open-field irrigation.
The open-field agricultural irrigation system is suitable for areas where maintenance and line laying are inconvenient, such as areas where lines have been dug up by harvesters, outdoor installations are impossible, or wiring costs are high, as well as areas with high and difficult patrol costs. For farmland without network access, wireless communication uses 4G networks from mobile carriers, offering a plug-and-play solution.

　　In addition, data related to open-field soil moisture, temperature, irrigation volume, and irrigation time are automatically recorded on the cloud platform and can be accessed and compared via Mobile, computer APP, and web pages, providing data support for crop planting plans.

　　The open-field agricultural irrigation system is an application of IoT technology in agriculture. Other applications of agricultural IoT include intelligent greenhouses, meteorological monitoring stations, constant-pressure irrigation, and integrated water and fertilizer systems, all contributing to the arrival of smart agriculture.