اثر الموارد المائية في انتاجية بعض الاراضي الزراعية في قضاء السلمان (محافظة المثنى - العراق) == The Effect Of Water Resources On Productivity Of Some Agricultural Lands In The District Of Al - Salman, Al - Muthanna Province ـــ Iraq
Author name:
محـمد فلـيح عـواد الجنابي
Supervisor name:
صفاء عبد الامير رشم الاسدي
General topic:
Geography
Specific topic:
Geography
Degree:
Master
University:
University Of Basrah - College Of Education For Human Sciences - Department Of Geography
Language:
Arabic
University location:
Basrah
First pages:
10T1326 - p.pdf
Abstract:
The present study aim to explain the role of water resources on the production of agricultural soils. This was done through examining the effect of groundwater on the chemiccal properties of agricultural the soils and the role of rainfall the chemeical properties of soils in the center of Salman district, during the period of year 2013 to 2014.. Salman district is loacated in Muthanna province, west of Iraq. It forms about 43.2% of the total area of the province. The geological formations in the study area are different from the third and fourth gelogical ages, with a dmoninating rocks of dolomite, lime, marl and sand rocks. There are many differences in the surface of the study area, where the topographic elevation ranges between 400 m above sea level in the south to 50 m in the north and east north. There are four soil groups recognized in the study area : desert soil, lime rocks, dune and Alluvial soils.These soils are very poor from organic materials and new formed.. The groundwater of the study area is contained from several aquifers especially Dammam and Um - Radhuma formations. Its storage is about 5.341 - 23.918 billion m3, and depended on the infiltration from rainfall on the area and its sourounding lands. The quality of groundwater included testing parameters of total dissolved solid (TDS), electric conductivity (EC) and major dominates the cations and Sulphat (SO4 - ) domnates the anions. The cultivated area of the Salman district about 21103 heactares during the years 2013 to 2014, with domining cereal crops, of 91.92% from the total cultivated area. The groundwater is the main source of irregation, and the amount of water demand for the total area is about 247.093 billion m3 per year. The groundwater contribute for increasing the (TDS) in the soils from 1140 mg/l in the plants soil, while the surface water of rainfall reduces the (TDS) in the soils to 1658 mg/l.
