To provide a means to eliminate inconvenience that agricultural utensils, a fertilizer and water should be conveyed on wheels from a distant separated place to the farmland in the case of a general citizen who rents a small section of the farmland for carrying on an agricultural farm or a vegetable plot.

By leaving a storage box 10 in an open air, rain water that has fallen on the surface of a lid body 12 comes to be stored in a water storage tank 15 via a groove 12b. For this reason, if the storage box 10 is left as it is on the farmland, rain water fallen on the farmland can be put to an efficient use in the agricultural work. This enables the curtailment of the labor of transporting the water storage tank 15 on wheels from a water source distant from the farmland up to the farmland. The storage box can be prevented from being stolen by inserting a stake through a ring fitting 18 and driving it into the farmland for fixing. In addition, while storing a hoe 21, a plow 22, the fertilizer 23 and the like in a body 11, the agricultural utensils and the like can be prevented from being stolen by locking the lid body 12 by locks 20.