دور تطبيق بعض الجوانب الفنية في التخطيط الاقتصادي لتدنية استخدام الموارد المائية في القطاع الزراعي

Abstract EN

Due to the fact that the agriculture sector is the most water-consuming sector, as it consumes about 76% of the total Egyptian water needs, estimated at 80 billion cubic meters in 2017, and that it is one of the sectors that suffer from the water loss resulting from leakage in the soil inside on the one hand and the low efficiency of the prevailing irrigation system It is surface irrigation on the other hand, it is very important to re-plan the use of water resources in this sector and to search for ways to provide the water necessary for use, especially in light of the difficulty of developing available water resources and the possibility of a deficit as a result of the construction of the Renaissance Dam, Hence, the research objectives were to study the current crop composition and the effect of reducing the water norm 10%, as it is one of the technical aspects that directly enables facing this problem (2) Re-planning the use of water resources through minimizing the use of water resources in the current crop composition, (3) Comparative analysis of the proposed scenarios before and after reducing the aqueous rating of each crop by 10%.

It was found that when the water metric is 10% lower than it is, which amounts to about 39.5 billion m3 to try to provide a measure of water resources, the total water needs for the existing crop structure is estimated at about 35.5 billion m3, with an estimated decrease of about 3.95 billion m3, and this reduction is without That is, making adjustments to crop composition other than reducing that percentage, which does not affect plant growth or crop productivity.

It was also found that the most suitable crop composition according to the minimization of water needs before reducing the water by 10% achieved savings on the ground area of about 119.49 thousand acres with a decrease of about 1.04% than its actual counterpart, and also achieved savings in the number of working days amounted to about 43 6 million working days, with a decrease of about 5.6% from its actual counterpart, and savings in the use of fertilizers amounted to about 36.23 thousand tons for nitrogenous fertilizers, 4.68 thousand tons for phosphate fertilizers and 11,34,000 tons for potassium fertilizers, a decrease of about 3.8 %, 1.52%, 3% each, respectively, and achieved a saving in water use of about 2 billion m3 with a decrease of about 5%.

It also achieved the same net return on actual cropping.

It also achieved the most suitable crop composition according to the minimization of water needs after reducing the water by 10%.

Save on the plot of land amounted to about 420.43 thousand acres, a decrease of about 3.7% from its actual counterpart.

It also achieved savings in the number of working days amounted to about 56.85 million days.

He worked with a decrease of about 7.4% from his actual counterpart, and he saved in the use of fertilizers about 67,59 thousand tons for nitrogenous fertilizers, 12.3 thousand tons for phosphate fertilizers and 11.72 thousand tons for potassium fertilizers, with a decrease of about 7.1%, 4 3.13% each, respectively, and achieved a saving in water use of about 2,89 billion m3, a decrease of about 8.12%, as well as the same net It achieved a return of the actual crop structure.

By comparison between the proposed crop composition models in light of the rationalization of the use of water resources in light of the risks surrounding Egypt's share of the Nile water as a result of periods filling the reservoir, the proposed crop composition was chosen according to the minimization of water needs after reducing the water base 10% as the best proposed models as it achieves savings in water resources, it is estimated at 2,89 billion m3.

This is in addition to saving about 3.95 billion m3 as a result of reducing the water standard, which saves about 6.84 billion m3.

It can contribute to providing a significant amount of water resources and reducing the negative impacts.

At intervals filling the tank.