اثر الجفاف في زراعة بعض المحاصيل الحقلية في محافظة ميسان == Effect of drought on field crops cultivation in Maysan province
Author name:
ضياء سعيد عودة القريشي
Supervisor name:
ناصر والي فريح الركابي
General topic:
Geography
Specific topic:
Agricultural Geography
Degree:
Master
University:
Wasit University - Faculty Of Education - Department Of Geography
Language:
Arabic
University location:
Wasit
First pages:
10T1726 - p.pdf
Abstract:
This study aims to detecting the effectives of drought phenomenon upon agriculture of wheat and barley crops in addition to maize as a summer crop . Drought is considered as the largest natural hazard that exposed in the study area as environmental system malfunction .These effectives of drought was measured by use (standardized precipitation indictor) which symbolize by (SPI). These method was develop by the scientist (Mckee) in addition to ( Covda indictor ).The researcher selected four climate stations covered all of study area ,to monitoring and characterized of above phenomenon for 44 years ago.The study reached to the analysis of the reality drought done in tow sections : the first section represent the analysis of the manual rate of drought and humidity .the second section represents with quarterly analysis to the drought in two seasons winter and autumn firstly and depending on standardized precipitation indictor (SPI) secondly.Also this study reached to the effects of recurrence years of drought and rainy upon wiggle of crops areas which mentioned in this study and lack of its production.Then the researcher selected two years from period of study one of them was drought and anther was rainy after that the researcher searched the impact of drought on wiggle of the level Tigris river in the study area depending on two hydrologic stations the first lies at the north of study area (Ali Elgherbi station) and the second is in south of study area ( South of Alamara station ).The study reached to the impact of drought upon fluctuation of the amount of water revenue ,by observing the drought years which was characterized as decrease in the amount of water. As well as the fluctuation of the level of the water in Tigris river during these years as a result of impact lack amount of production of study crops .while rainy years have altitude level of the water in Tigris river this altitude participated in increasing production of study crops.The statistical analysis is done by using Minitab (.14) program to prove the statistical relation between the independent variable (drought values of standard rain indictor and Covda indicator comparison with total evaporation and minimum and maximum temperature with two adopted variables of cultivated area and production of the crops .The statistical methods including simple correlation and the Pearson correlation coefficient in addition to using of (T - test) values.
