The issue of  water resources using which make the best using  stayed one of the most important issue  which Egyptian society suffer from on the two levels  individual  and national .  The research depended for a achieving his goals on the discriptive and statistical method which representative on linear programmar method and the researcher depended on the data which be published by research associations such as the central agency for the general mobilization and statistics and ministry of agriculture and  reclaimation the lands.  The research showed that the limitations of crops combination are (the agricultural land – the water resources) and the constraints which be used in linear programmar model are (crops area- feddan return net) and by the looking for the   actual crops combination we can observe that it consist of (42 crops divided into (17 winter crops – 13 summer crops- 6 nile  crops- 6 fruits) and from the research results showed that the gross water amount was (46271.5) million m3 and the water amount for the winter crops was (14870.7) million m3 and the water amount for the summer crops was (23552.6) million m3 whereas the nile crops was (1041) million m3 and the fruits was (6807.2) million m3 and which related to the crops area the results showed that the gross area was (13678254.7) feddan and the winter crops was (6613977.2) feddan whereas the summer crops was (5325536.7) feddan and the nile crops was (392740.8) and which related to the fruits was (1246000) feddan

In this study different concentration of ascorbic acid was used as antioxidant(0.1, 0.2, 0.3 and 0.4%) from the oil weight percentage in food model system. Water content 5,10,20,30% from the dry base. Sample were kept in transparent plastic bags exposed to normal light in room temperature from march till June. The bags were completely sealed in order to restrict oxygen absorbing .Pv value was used as a criteria for autoxidation progress at storage period . Results showed that the oxidation was suppressed in the system low moisture (5%) at beginning weeks. The process was enhanced in system with high water content and ascorbic acid concentration (0.2, 0.3, and 0.4%).After one month of storage all samples unaffected in all percentage used.