On Wednesday, three drones and one tracked robot were used to spray lime sulfur on jujube trees in an intelligent air-ground operation in Ruoqiang County, China's Xinjiang Uygur Autonomous Region. This new approach triples efficiency and eliminates missed or repeated spraying. As the "Hometown of Chinese Jujubes" with over 15,000 hectares of plantations, Ruoqiang is now accelerating its shift from manual to smart plant protection.