The depth of the cultivated land in the deep plowing shed should be more than 30 cm, which is conducive to the growth and development of the root system, and improves the soil water retention, fertilizer retention and permeability. After watering, the water quickly penetrates into the lower layer of the soil, and there is no accumulation of water on the ground surface. Waterlogging damage; in drought, there is water storage in the lower layer of the soil, which is not prone to drought. Water control and dehumidification watering should strictly control the watering amount, less or no watering, and the watering interval should be appropriately extended. Shallow water or drip irrigation should be used. Cover the shed with plastic film to reduce the evaporation of soil moisture. Ventilation is generally appropriate when the temperature is high at noon. When ventilation is not possible, natural moisture absorption can be used, and materials such as rice straw, wheat straw, quicklime and other materials can be used to absorb water vapor or fog between rows to achieve the purpose of dehumidification.
Enhancing the light when the weather is low and low temperature, it is necessary to add efficient plant supplement light in the shed, so that the crops have enough light for photosynthesis. At the same time, clean up the dead and yellow leaves of crops in time to avoid blind spots.
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