تقويم عدد المنافذ الحقلية لوحدة أروائية و إيجاد قيم و اتجاهات الميول المثلى لإعمال التسوية تحت تأثير موقع المسقى

الملخص EN

This study was carried out to adjust farms turn out stations and to find the required number of irrigation unites and to find the value and direction of optimum designed slopes for the plane level in the irrigation projects previously built by using the best plane method.

This method do not give the real optimum slopes when the water course lays in the lower ground levels and the collector drain lays in the higher ground levels in the irrigation unit.

This method gives the inverse direction of the optimum slope magnitude and the inverse required cross irrigation slope.

So, it was necessary to solve this problem by using limitations and conditions of determination the correct direction for irrigation slope and the required cross irrigation slope and the values of these slope to give the minimum cut quantity and the minimum cut to fill ratio , which in turn minimizing cost