Abstract:

Nowadays, although soil leather is defined as one of the important forms of soil disintegration, it has mixed its heads for many years along with its causes and effects. The formation of the cortex layer, which is often seen in silk soils with no stable structure, is considered a problem related to soil in many parts of the world. The results of the studies were found that in the soil structural crop layer, storage crop layer, covered crop layer and microbiological soil crop layer in different structures could form four types of crop layers. Under the control of the formation and hardness of the crop in the soil, the reproduction of the fide output, the development of the aggregation, the enhancement of the resilience of natural soil aggregates and the control of erosion, the various applications used for the purpose of control; the management of the soil organic material, the use of the soil surface cover, the development of regulatory applications and the management of irrigation is possible.

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