Abstract:
Rice is the only cereal that can survive in conditions of flood, this is enough to explain the
complex relations which exist between rice and water. In Morocco, rice growing locates in the
area of Gharb and Larache (North-West of Morocco).the location of these rice plantations is due
to the presence of three factors : a warm climate and not very wet, proximity of the Sebou wadi
where the pumping the water of irrigation is carried out, and the propitious nature of the ground.
The objective of our work is to evaluate the physicochemical quality of surface waters of five
clos of the rice plantations of the area of Gharb in Morocco (town of Sidi Allal Tazi and Bil
Ksiri).The analysis focused to 13 physicochemical parameters of water such as the temperature,
the hydrogen potential, electric conductivity, salinity, and the ions major (Cl-, SO42-, NO3-,
HCO3-, Ca2+, Mg2+,? K?^+ Na+ et?? NH?_4?^+).The got results showed a strong
alkalinity, which could be explained on the one hand by the biological activity of the macro
vegetation immersed with in the pieces, and on the other hand by the nature of the grounds of the
rice plantations and an appreciable mineralisation |
