The invention discloses an acid reduction and
humidity regulation method for the red upland soilred-soil dryland. The red upland soilred-soil dryland is covered by straws. The acid reduction and
humidity regulation method for the red upland soilred-soil dryland is characterized in that alkaline acid reduction and
humidity regulation composite modifying agent is applied to the red upland soilred-soil dryland before the red upland soilred-soil dryland is covered by straws; the alkaline acid reduction and humidity regulation composite modifying agent is one of
calcium peroxide and
magnesium peroxide; and 5.8-8.0kg of alkaline acid reduction and humidity regulation composite modifying agent is applied to each unit of area. According to the acid reduction and humidity regulation method for the red upland soilred-soil dryland, the alkaline acid reduction and humidity regulation composite modifying agent reacts with water in soil so as to provide OH<->, neutralize parts of H<+>, generate alkaline inorganic matter and
oxygen and release heat; in the slow
oxygen releasing process, the soil acidity is lowered, the soil
redox potential is changed, the water and air ratio of the soil is regulated, the acid reduction and humidity regulation effects isare simultaneously generated to the red upland soilred-soil dryland, and the acidity, the temperature and the
moisture of the red upland soilred-soil dryland covered by the spring
straw can be obviously improved so as to accelerate agricultural
synergy and farmer income increment; and in addition,
calcium or
magnesium nutrition can be provided for the
crop growth and development, thereby being favorable for improving the
resource use ratio.