To provide a farm land heating system which can be installed easily, which can properly make rain water, sprayed water or fertilizer permeate a culture area, which can reduce power cost and warm the culture area.SOLUTION: A farm land heating system is configured so that, a flexible mesh-like warming sheet 2 formed by forming transverse lines 21 and vertical lines 22 which generate heat by electrical conduction into a mesh-state, and coating each transverse line 21 and vertical line 22 with an insulator 24, is laid or embedded in a culture area X of a crop A, then, by performing electrical conduction to the transverse lines 21 and vertical lines 22 of the warming sheet 2 from a power generator 3 through connection means 4, the culture area X can be warmed in a uniform state without unevenness, and from mesh-state gaps, rain water, sprayed water or fertilizer can be made to permeate an underground of the culture area X.SELECTED DRAWING: Figure 1
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