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The first is suppression. Can crush the larger å· å· , , , , , , , , , , , , , , , , , , , , , 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. Earthworms and cockroaches can destroy the capillaries on the surface of the soil and reduce water loss. The second is cultivator. Can cut off the capillary to the surface and reduce the loss of water in the tillage layer and the lower layer. According to different soil moisture and dry soil layers, different depths of cultivator can effectively control the soil moisture, so there is a saying that there is water and fire in the steamed bread. In addition, mulching or straw mulch, and the application of soil warmers can reduce the loss of soil moisture.