The soil moisture and drought management system evaluates soil moisture and drought mainly based on soil moisture determination results and water requirements for different crops and different growth stages, with reference to soil field water holding capacity, capillary breakage associated water content, withered water content, soil properties, Precipitation and soil moisture were recorded in the same period, and the appropriate degree of soil moisture, crop growth and yield efficiency, precipitation, and soil moisture change during the same period were analyzed.
An important module function of the soil moisture and drought management system is to use the 500hPa atmospheric circulation characteristics to predict soil moisture during the spring (from March to May). The quality of soil moisture in the spring is the key to the success of agricultural spring production. Due to the varying length of soil moisture samples, the longest was the beginning of 1986, and some of the dates were measured incrementally since 1992. Considering that the change in soil moisture content is closely related to the amount of precipitation in spring, according to statistics, the average spring precipitation of 5 stations (Shenyang Observatory, Xinmin, Liaozhong, Kangping and Faku) in Shenyang during the period from 1992 to 2004 is 13a. The correlation analysis was made between the average soil moisture content of 10-20 cm soil layers in 13 sub-cultivation layers in spring.
Soil moisture and drought management system has realized soil moisture information statistics, retrieval, list display, graphical analysis display and forecast, and other functions, real-time monitoring of soil moisture changes, not only can provide scientific basis for the relevant departments to deploy artificial rainfall and other drought resistance decisions. , but also to facilitate business work.
The relevant data of soil moisture content is an important information message for drought relief, and it is also an important basis for drought resistance and rational use of water resources in agriculture. In order to better serve the increase in grain production, it is necessary for farmers to increase their income to monitor and predict soil moisture. In modern times where science and technology are continuously advancing, the application of soil moisture and drought management systems is imperative. It is worth promoting and applying. The soil moisture and drought management system utilizes the latest generation of database management system VFP610 development tools. The system has a total of 7 functional modules, which realize the functions of statistics, retrieval, list display, graphic analysis, display and prediction of soil moisture information.