Recently, the precipitation in some areas of southern North China, Huanghuai, Jianghuai, Hubei, Shaanxi, etc. is more than 50% less than that in the same period of the year, the temperature continues to be high, soil moisture loss accelerates, and drought develops rapidly. At present, the National Flood Control and Drought Relief Headquarters has launched the fourth level emergency response to drought, and the Ministry of Water Resources has launched the third level emergency response to drought prevention in Henan and Hebei. According to the forecast of the meteorological department, in the future, North China, the Yellow River and Huaihe River will continue to have high temperature and little rain, and drought may occur further details