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Role of Organic and chemical Conditions and Type of Irrigation Water In Chemical Properties for Irrigated Soils by Saline Water

تأثير الري بمياه مالحة ودور المحسنات العضوية والكيميائية على بعض الخواص الكيميائية للترب الطينية

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 Publication date 2018
and research's language is العربية
 Created by د. يوسف الخلف




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The pot experiments were carried out under the conditions of the glass house at the Faculty of Agriculture, University of Aleppo. The aim of the present study is to determine the role of gypsum and humic acid on some chemical properties of irrigated soil by saline water. The experiment was designed in a split second-order manner, with the main sections containing three levels of salinity irrigation water using sodium chloride salt as (W1:0, W2:3, W3:6 g𝓁-1). Three levels of gypsum were mixed: as (G1:0 , G2:25, G3:50 g). Three levels of acids were added with irrigation water as (H1:0,H2:24, H3:48 kg/he). The experiments for application leaching factor with irrigation water were carried out for treatment (W2,W3) at two levels as (%10 and %20) of field capacity, respectively. The results showed that the salt accumulation was higher when applied the leaching factor (W2), while the salt accumulation was decreased when the wash factor (W3) was applied. The addition of gypsum levels contributed for increasing in EC values, especially in the surface layer. The role of humic acid was effectively demonstrated in saline soils (W3, W2), where the concentration of sodium ions, SAR and ESP were significantly reduced when applying a high level of humic acid with irrigation water. The SAR values and the sodium-sodium ratio (ESP) were affected by the accumulation of salts in the surface layer.


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Research summary
نفذت تجربة أصص في كلية الزراعة بجامعة حلب لدراسة تأثير الجبس وحمض الهيوميك على الخواص الكيميائية للترب المروية بمياه مالحة. تم تصميم التجربة بطريقة القطع المنشقة من الدرجة الثانية، واشتملت على ثلاثة مستويات من ملوحة مياه الري وثلاثة مستويات من الجبس وثلاثة مستويات من الأحماض الهيومية. أظهرت النتائج تراكم الأملاح في الترب المروية بمياه مالحة، وكان تراكم الأملاح أعظمياً عند تطبيق معامل الغسيل بنسبة 10%، بينما انخفض تراكم الأملاح عند تطبيق معامل الغسيل بنسبة 20%. ساهمت إضافة الجبس في زيادة قيم التوصيل الكهربائي (EC)، وخاصة في الطبقة السطحية. كما برز دور حمض الهيوميك بشكل فعال في الترب المروية بالمياه المالحة، حيث انخفض تركيز أيونات الصوديوم وقيم معدل الصوديوم المدمص (SAR) والنسبة المئوية للصوديوم المتبادل (ESP) بشكل واضح عند تطبيق مستوى عالي من حمض الهيوميك مع مياه الري. تأثرت قيم SAR و ESP بتراكم الأملاح في الطبقة السطحية.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو معرفة الأثر الذي يسببه كل من الجبس وحمض الهيوميك في الخواص الكيميائية للترب المروية بمياه مالحة.

  2. ما هي النتائج التي توصلت إليها الدراسة بشأن تراكم الأملاح؟

    أشارت النتائج إلى تراكم الأملاح في الترب المروية بمياه مالحة، وكان تراكم الأملاح أعظمياً عند تطبيق معامل الغسيل بنسبة 10%، بينما انخفض تراكم الأملاح عند تطبيق معامل الغسيل بنسبة 20%.

  3. كيف أثر حمض الهيوميك على الترب المروية بالمياه المالحة؟

    ساهم حمض الهيوميك بشكل فعال في الترب المروية بالمياه المالحة، حيث انخفض تركيز أيونات الصوديوم وقيم معدل الصوديوم المدمص (SAR) والنسبة المئوية للصوديوم المتبادل (ESP) بشكل واضح عند تطبيق مستوى عالي من حمض الهيوميك مع مياه الري.

  4. ما هي التوصيات التي يمكن استخلاصها من هذه الدراسة؟

    توصي الدراسة باستخدام حمض الهيوميك والجبس كمحسنات للترب المروية بمياه مالحة لتحسين خواص التربة وتقليل تراكم الأملاح، مع ضرورة تطبيق معامل غسيل مناسب لتحقيق أفضل النتائج.


References used
6- Shaaban, M. Abid, M. Abou-Shanab, R.A.I. 2013- Amelioration of salt affected soils in rice paddy systemby application of organic and inorganic amendments. Journal Plant Soil Environ. Vol. 59, 2013, No. 5: 227–233.
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An experiment was carried out under the conditions of the green house at the Faculty of Agriculture, University of Aleppo. The aim of research is determine the effect of the addition of humic acid to the irrigated soils by saline water in their organ ic carbon content and the yield of the wheat crop. The experiment was designed in a split-spilt dissection method. The main sections comprising three levels of irrigation water salinity (W1:0, W2:3, W3:6 g-1 NaCl). Three levels of gypsum were mixed with soil: (G1:0, G2:25, G3:50 g). Three levels of humic acid were added with irrigation water (H3:48, H2:24, H1:0 kg/h). The coefficient Leaching with irrigation water for W3 and W2 was applied at %10 and %20 of the field capacity, respectively. The results showed that the addition of humic acid contributed to the increase in the stock of organic carbon. The highest percentage of organic matter (2.70%) was found in the deep layer (W3G3H3), while the lowest ratio was (1.41%) in the surface layer of treatment (W3G2H1). The role of humic acid, especially at the level of H3, was clearly demonstrated in increasing the productivity and weight of the 1000 grains for the wheat crop. The study confirmed the role of the leaching factor in the organic carbon losses of the soil, where organic carbon was losses (%26.31) with leaching factor 10%, where the losses (%44.74) with leaching factor was 20%.
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