Summarize the measures to adjust soil moisture in agricultural production.

Answer: (1) Building water conservancy: overall planning, adjusting measures to local conditions, rational layout, and establishing a set of irrigation and drainage system in the field. When the soil moisture is low and cannot meet the needs of crops, irrigation should be carried out. When the soil moisture exceeds the field capacity and harms crop development, it is necessary to drain water.

(2) Planting shelterbelts: The construction of shelterbelts can improve climate conditions, reduce wind power, reduce soil moisture evaporation, increase snow cover, reduce surface runoff, accelerate water infiltration, prevent soil erosion, and lower groundwater level, so as to achieve the purpose of controlling and regulating soil moisture, and keep enough soil moisture for crop growth and development.

(3) Ground cover: Covering with plastic film and vegetation can reduce water evaporation.

(4) Agronomic measures: shoveling, ploughing, subsoiling, ploughing and pressing can adjust soil moisture.

(5) Scientific and reasonable crop rotation: The water demand of different crops is very different, and crop rotation has a great effect on regulating soil moisture.

(6) Increase the application of organic fertilizer and create aggregate structure: The application of organic fertilizer can increase the content of organic matter and improve the physical properties of soil, which is beneficial to the formation of soil aggregate structure and improve the physical properties of soil, thus playing a role in regulating soil moisture.