Using a wireless sensor network (WSN) to realize the accurate sensing of agricultural planting information will greatly optimize agricultural production. The introduction of the smartphone for the agriculture WSN will further realize various agricultural services distributed in the fields. Aiming at the demand for distributed agriculture services for smart tourism farming in the Beijing–Tianjin–Hebei (BTH) urbanization region, a smartphone-based hybrid WSN node is presented. The node can support the function of the traditional central agriculture management by terminal/host configuration. Tourists and farmers can also access the node directly to utilize in-field information services. The designs of node hardware and corresponding smartphone App are discussed, and the test results in a BTH tourism farm are also presented. The node is expected to be a candidate for future distributed agricultural services of smart tourism farms and related agriculture applications in the new-style BTH urbanization region.