PROBLEM TO BE SOLVED: To provide a paddy fertilizer bag that facilitates installation to a paddy.;SOLUTION: A paddy fertilizer bag is structured such that one side is sewn by a sewing machine using non-warm water-soluble yarn and other 3-sides are sewn by warm water-soluble yarn and the non-warm water-soluble yarn among four sides of a first bag structure and a second bag structure of a rectangle comprising nonwoven fabric, and powder fertilizers are contained in the paddy fertilizer bag. The paddy fertilizer bag body with the powder fertilizers contained therein is installed in the vicinity of a water inlet, and then irrigation water permeates the inside of the paddy fertilizer bag through a permeable nonwoven fabric and the paddy fertilizer bag body is fluctuated by fluctuation of an irrigation water flow, and thereby the powder fertilizers become clay-shaped lumps while generating heat. Alternatively, the warm water-soluble yarn is dissolved with time passage, and therefore the paddy fertilizer bag becomes a shape of one piece of sheet by the solving of the sewing, and thereby the fertilizers becoming the clay-shaped lumps are directly exposed to the irrigation water to promote elution and are uniformly spread on the whole rice field.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT
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