بهدف تنفيذ هذا البحث اِختير و حضر اثنا عشر مقطعا تربيا، أخذت منها عينات حسب تعاقب الآفـاق
المختلفة في كل مقطع (A و B و C) . و بلغ عددها (36) . بينت نتائج التحاليـل أن العامـل الطبـوغرافي
يؤدي دوراً مهماً في تحديد بعض خصائص التربة مثل عمق مقطع التربة، و التركيـب الحبيبـي للأفـاق
السطحية، فضلاً عن توزع كربونات الكالسيوم، و كذلك بعض العمليات البيدولوجية مثل ظاهرة الانكمـاش
و الإنتباج. كما تبين أن محتوى التربة من العناصر الصغرى يقع بين المتوسط و المنخفض، و ربما يعـود
ذلك إلى فقر المادة الأم بهذه العناصر من جهة، و استنزاف بعضها الآخر من قبل النبات، نتيجة للاستثمار
الطويل لهذه الترب دون العمل على تحسين خواصها الخصوبية من جهة أخرى. و قـد لـوحظ تنـاقص
تدريجي في تركيز هذه العناصر كلما اتجهنا نحو الغرب، حيث تتأثر هذه العناصر بعملية الغسل و علاقتهـا
بالموقع الطبوغرافي بين ظهر المنحدر (Backslope) و قدم المنحدر و أخفـس المنحـدر (Footslope،
Toeslope) ، و ربما يؤدي (pH) التربة دوراً جزئياً في ذلك.
To carry out this study, 12 soil profiles were selected and prepared, and soil
samples were collected from the different horizons (surface, subsurface, and C
horizon) in each profile. The results of the analyzed samples indicate that,
topographical factors plays an important role in determining some feature,
such as, the depth of the profile, texture, distribution of CaCO3 and the process
of swelling and the shrinking. Concerning the soil fertility, the study showed
that the soil content of microelements is ranging between moderate to low, thus
may be related to the mineralogical composition of the parent material,
weathering status, and to the use of these elements by the plants during the long
lasting exploitation of these soil without any restitution of these element. The
results indicate as well, the decrease of these elements with decreasing
elevation, i.e from the slop to the plain, this probably due to the relation
between the leaching process and topographical position, and to lesser extend to
the (pH) of the soil.
References used
Abu Nukta, F. (1995). Environmental Impact of Fertilizers Use in Syria. Proc. Seminar, production & use of chemical fertilizers and environment. Cairo. Eds. M. M. El-Fouly and F. E. Abdalla, pp35-50
Abu Nukta, F., R. Parkinson, (2007). Effect of Humic Substances on Micronutrients Availability in Soils. Damascus University Journal for Agricultural Sciences. 23(2), 163-178
Alloway BJ. (2004). Zinc in soils and crop nutrition. IZA Publications. International Zinc Association, Brussels, pp 1–116
A field experiment was carried out to investigate the effects of organic
fertilizers (mushroom substrate residues, poultry manure and city compost)
and mineral fertilizers (NPK) on some properties and productivity of a
calcareous soil using chard
In order to evaluate the important role of climate on soil formation, three
different locations (Nawa, Dael and Nasib) in southern part of Syria,
representing the North West, Middle and Southern parts of Hauran Plateau
were selected and differ mai
The research was carried out at Al-Qamishli Agricultural Research Center, GSAR,
Syira, during the seasons 2011, 2012 and 2013, in order to estimate the effect of
adding different levels of a crude Zeolite (T2-20 tons/ha, T3- 40 tons/ha, in addition
This paper presented an analysis of the most important factors that drive
immigrants from the area of Jabal al-Hoss in the province of Aleppo to
different directions searched for employment and how they affect migration
destination and the nature
This study was conducted to evaluation of some marshes soil physical
characteristics at south Iraq from studying soil properties and accounting the
simple and multiple correlation coefficients and relation equations, from which
we can predicted th