Vízügyi Közlemények, 1958 (40. évfolyam)
4. füzet - VII. Kisebb közleménye
(74) Этот результат показывает, что вложенный до сих пор капитал (1503,4 милл. фт.) возвращается полностью несмотря на то, что все возможности не были использованы в надлежащей мере. (Резюме автора, перевод инж. Г. Каради.) PRESENT-DAY IRRIGATION PRACTICE IN HUNGARY (1954—1957) by J. Alcser and M. Gábri (For tables and figure see pp. 422—451 of Hungarian text.) UDC. 626.81/82 (439) Systematic technical water utilization work for agricultural purposes (irrigation) in Hungary may essentially be counted from the date of the promulgation of Act XX. in 1937. Nevertheless, apart from the barrage at Békésszentandrás on the Körös River and the irrigation developments and systems at Tiszafüred and at Hódmezővásárhely on the Tisza River, the main structures forming the centres of present-day irrigation systems came into being in the last decade only. The tables containing characteristic data on irrigation practice disclose the following: Table II. Variations of irrigated areas according to agricultural cultivation branches. Table III. Variations of irrigated areas according to counties and regions of the country. Table VI. Distribution and development of irrigation according to growing sectors. Table VII. The distribution of irrigation in social property according to regions of the country. Table IX. Distribution according to irrigation methods. From among irrigation methods the greatest part was taken up by flooding irrigation every year owing to the large extension of rice fields. The increase of the areas irrigated by sprinkling may be noted with satisfaction. Table X. shows the extension of technically equipped irrigation plants and that of irrigable areas unequipped as well as the extent of irrigable areas not utilized at present. Table XI. shows the amount of water supplies utilizable by irrigation on basis of data of the year 1955. The completed sections of the main intake structures in the Tisza Valley could have delivered net 20 cu.m per second water in excess of the water demand in'the growing season in 1955. However, the main structure network necessary for the conveyance and distribution of irrigation water has not yet been built or completed in many places. The net water demand in the next 15 years as compared to the discharge capacity of the intake works installed in 1955, yields the water balance shown in Table XVI. The prospective channel network should be built with far greater discharge capacity. The relatively small water demand in the Danube Valley is safely met by the discharge of the Danube, whereas in the Tisza Valley — according to investigations into discharge data of the last 50 years — scarcity of water may occur in some periods. In order to determine the value of the additional water supply required, two methods are employed. According to the first solution an additional supply should be provided ensuring that scarcity of water in a smaller or greater degree should not occur in periods shorter than 5 years. This method is called water supply with 80 per cent safety. The necessary quantity of additional supply is shown in Table XVII. According to the second solution the net water quantity to be stored has been determined by which the water demand of rice fields in 1950 — the record year of
