تأثير التغريات المكانية لبعض صفات التربة الهيدرولوجية و الفيزيائية في توزع العناصر الخصوبية لمشـروع كفل شنافية العراق

العناوين الأخرى

Effect of spatial variability of some soil hydrological and physical properties in the distribution of some nutrients of Kifel - Shanafiya Project Iraq

المؤلفون المشاركون

مهند سلام عباس
قصي عبد الرزاق وهيب

المصدر

المجلة العربية للبيئات الجافة : مجلة دورية علمية محكمة

الناشر

المركز العربي لدراسات المناطق الجافة و الأراضي القاحلة

تاريخ النشر

2021-06-30

دولة النشر

سوريا

عدد الصفحات

17

التخصصات الرئيسية

العلوم الزراعية

الملخص الإنجليزي

Kiffil Shinafiya project was selected as it’s been conducted and covering the areas of grain crops agriculture in Najaf and Qadissiya provinces (Iraq), in order to the effect of the hydrosequence as a part of the bigger toposequence in the lands of the selected project and their effects in the physical properties of the soil as well as the nutrients composition in soil.

Lands of this project are considered as a part of the Mesopotamian plain.

Three hydrosequences were disclosed with three transects (T1, T2, T3) in the area of study.

The first hydrosequence was perpendicular on the other two sequences.

Fifteen pedons were outcropped, five pedons in each transect in addition to eighteen more surface samples to be a total sample of 33 locations.

Pedons were morphologically described due to soil survey manual (Soil Survey Staff, 2017).

Results of the study showed that the depth of ground water was ranging between 78 and 150 cm, with drainage classes ranging from imperfect well drained up to excessively well drained soils.

Spatial distribution of soil salinity showed that the largest area was for the class 48- dS.nr1, while sodium adsorption ratio ranged from 1.05- 55.58 where the highest value was in the second pedon of the first transect.

Carbonate minerals showed simple variation as well in the area of study in a range of 114.15- 494.37gm.kg1 in the surface horizons and samples where the highest content was in the third pedon of the first transect.

Bulk density did not show wide spatial variability and the content of sand, silt, and clay showed a spatial distribution pattern in spite of the narrow variation they showed.

Most chemical properties showed high coefficients of variation (C.V.), where organic carbon was high accompanied with the organic matter C.V.

Total nitrogen showed highest content of 0.16% in the sixth pedon of the second transect and the thirteenth pedon of the third transect of the hydrosequences.

Available nitrogen, phosphorus, and potassium content in soil showed that the highest content of available nitrogen was 77.00 mg.kg'1 in the tenth pedon of the second transect which is located at the end of the hydrosequence, while available phosphorus of the highest value was in the fifth pedon of the first transect that is located at the highest part of the hydrosequence of that transect, and the available potassium did not show a specific distribution spatially, but we can notice that it showed that the lowest parts of the hydrosequences showed highest contents of available potassium when compared to the northern parts of them.

Also, available potassium showed a spatial dependency to clay content distribution where both showed closer patterns spatially, where it increased when clay content increased as compared to the rest sites of the samples.

نوع البيانات

أوراق مؤتمرات

رقم السجل

BIM-1437509

• APA
• MLA
• AMA