Soil moisture content is the most direct indicator of drought. Soil moisture monitoring has been carried out in Japan and abroad since the middle of the 20th century. Soil moisture plays a very important role in crop production, water-saving irrigation, etc. Soil moisture sensors provide the scientific basis for differentiated water-saving irrigation, while accurate water supply also helps to improve crop yield and quality. At present, soil moisture transmitters mainly use drying weighing, tensiometer, neutron moisture meter, time domain reflectometer, frequency domain transmitter and other measurement methods. Frequency domain measurement techniques for soil science have only recently been applied and have been used for nearly half a century to measure soil moisture content by measuring relative capacitance, i.e. permittivity, at a certain frequency. The frequency domain method has a simpler structure and more convenient measurement than the time domain method. China is a big agricultural country, and the high quality and yield of crops are of great significance to the country’s economic development. At present, under the circumstance that agricultural natural resources are constantly decreasing and the trend of ecological environment deterioration has not been reversed, if agriculture wants to develop further, it is necessary to change the growth mode of agriculture and promote the modernization and informatization of agricultural development. The emergence of soil moisture sensor provides new ideas and powerful means for information collection and processing in various fields of agriculture. With the help of soil moisture sensors, real-time can provide soil temperature and humidity growth information, crop irrigation conditions, etc., this information helps people to find problems in agricultural production in time, agricultural production gradually from people-centered, to information- and software-centered production mode. If you have any questions, welcome to call: 400-600-4496, please indicate from the official website of Star Sensor Manufacturing Co., Ltd