In the spring the land is plowed and harrowed. Explain why this helps to retain moisture in the soil.

In the upper soil layer, after plowing by harrowing, capillaries are destroyed, through which water is “sucked” from any depth. If you noticed: after digging, where the top layer dries up, the earth remains damp under it. And where it is untouched and seems wet from above – in the depths it is much drier and harder.