The board of directors of the irrigation district shall file in the district court of the county in which the lands of the district, or some portion thereof, are situated, a petition praying, in effect, that the proceedings aforesaid may be examined, approved and confirmed by the court. The petition shall state the facts showing the proceedings had for the issue and sale of bonds, or for the authorization of contract with the United States or for the determination of the rate of drainage benefits and award of damages, as the case may be, and shall state generally that the irrigation district was duly organized, and that the first board of directors was duly elected, but the petition need not state the facts showing such organization of the district or the election of said first board of directors.