PURPOSE: To readily and uniformly apply a basal fertilizer and an additional manure to a paddy field only by dripping a fertilizer from a fertilizer bag together for several minutes by previously supplying irrigation water to the paddy field for a fixed time, successively throwing a solid fertilizer together with irrigation water to the paddy field.

CONSTITUTION: In this method for manuring in which a solid fertilizer having a form of rapidly dissolving in water and irrigation water are supplied from an inlet of a paddy field directly to the paddy field, irrigation water is previously supplied to the paddy field for a given time and a solid fertilizer such as porous fertilizer is directly dropped from a fertilizer bag for several minutes and manured. Consequently, a basal, fertilizer or an additional manure can be applied to a crop such as paddy rice plant, lotus root or rush. In spite of light labor of operation in which the fertilizer is dropped from the fertilizer bag for several minutes, uniform manuring can be inexpensively carried out without requiring an expensive device. The used solid fertilizer has preferably 0.3-0.8 bulk specific gravity.