الاستخدام الاقتصادي الأوفق للموارد المائية في الزراعة المصرية

الملخص EN

The agricultural uses of water are estimated at about 61.5 billion m3 , which is what agriculture uses from the waters of the Nile River, rain, groundwater, and recycling of wastewater in old lands and new lands.

Estimates of the user in the agricultural sector from the water of the Nile River according to the water regulations of the crops grown at Aswan are about 46.56 billion m 3 and about 38.26 billion m 3 in the field after excluding the losses from them in the transmission and distribution networks.

The share of agriculture in Upper Egypt was about 7.9 billion m 3, representing about 20.7% of the total user of the Nile water.

The share of agriculture in Central Egypt was about 7.1 billion m3 , representing about 18.6% of the total user of the Nile River water, while the share of agriculture in Lower Egypt was about 23.3 billion m3 , representing about 60.7% of the total user of the Nile water.

Field crops are the most important A user of water between crops grown in the regions of the republic in the valley and the delta, where the use of field crops of water reached about 33.45 billion m3 , representing about 87.4% of the total water use, while the use of vegetables from water was about 2.65 billion m3 , representing about 6.9% of the total water use.

By comparing the actual crop composition and its corresponding counterpart to achieve the first goal of the linear programming model (maximizing the net feddan return), the results of solving the linear programming model were clarified with the aim of maximizing the net per feddan return, as the net return per feddan of the current crop structure reached about 67 million pounds, while it became clear that the resulting proposed net yield From the solution of the linear programming model, it amounted to about 69 million pounds, meaning that the results of the proposed model have achieved the goal of maximizing the net return per feddan, and the difference between the net actual return and the proposed net return was about 2 million pounds, an increase of about 3%.

The second objective of the linear programming model (minimizing the amount of water used) was also achieved, and it became evident from the results of the solution of the linear programming model with the aim of minimizing the amount of water used.

About 26.7 million m 3 , meaning that the results of the proposed model achieved the goal of minimizing the amount of water.

The difference between the actual water quantity and the proposed water quantity was about 415 thousand m3, with a decrease of about 1.5%.