In the agricultural field, we often hear the keyword lyrics. In simple terms, lyrics refers to the amount of water in the soil of the crop layer, that is, the size of the land. The amount of soil moisture has a direct impact on crop growth and is one of the key factors affecting planting yield and quality. Therefore, in recent years, the monitoring of soil moisture has been paid more and more attention. In the cultivation of soybeans, corn and other crops, the soil moisture monitoring system is widely used in various regions to carry out automated soil moisture monitoring, which not only saves manpower but also improves monitoring efficiency. Ensure the smooth development of planting work. Soybean is one of the most common and important food crops in China. During the growth period, the crop has strict requirements on soil moisture, and the soil moisture demand in different periods is also different. In order to achieve refined soil moisture management, it lays a good foundation for high-quality and high-yield soybean, and improves the excellent rate of soybean growth. The application of soil moisture monitoring system to strengthen soil moisture monitoring has become one of the most effective production measures. Using the monitoring data provided by the system to guide irrigation and production can effectively improve the growth quality of soybean crops and achieve high yield and stable yield. Studies have shown that when soybean is germinated, it is required to have sufficient water, and the soil water content is 20% to 24%; in the seedling stage, the soil moisture is required to be slightly less; while in the flowering stage, the plant grows vigorously and the water demand is large, the soil is required to be equivalent. Wet; in the pod blast stage, the accumulation of dry matter is accelerated. At this time, sufficient soil moisture is required. If the lyrics are not good, the young pods will fall off or the pods will dry up. The use of soil moisture monitoring system to monitor and manage soil moisture can not only effectively avoid the risk of soybean planting, but also ensure that soil moisture is always in the best condition, optimize the production conditions of soybean crops, and significantly improve the growth of soybeans. Rate, achieve quality and efficiency, and help farmers increase production and income. Guangzhou Jiluo Machinery Manufacturing Co.,Ltd , https://www.gzjiluo.com