Investigation of Leaching Process on Saline and Sodic Soils, and Provide a Suitable Experimental Model for Land Reform in “Southern Khuzestan” Soils

نویسندگان

  • M Dehghan irrigation and draning,Science and Researche Branch Islamic Azad University, khouzestan Iran.
  • M Sorkhe-Nejad hydraulic structures,Science and Researche Branch Islamic Azad University, khouzestan Iran.
چکیده مقاله:

In regions like south of “ khouzestan” that water table are high, under the effect of water rise moving through capillary fringe and its vaporize,  the salts move to soil surface and cause salin or salin and sodic soils. Leaching assign as one of those adjustment soils methods. In order to investigate the leaching process and draw the curves of desalinization and dealkalization in region of Darkhovin Shadegan, The research was conducted in a randomized complete block design that included four treatments using 40, 60, 80 and 100 cm of water for leaching was repeated three. In present work, we investigate leaching experiment by continuous ponding in experimental plates as a metal plat model in square meter based on plane of experiment and associated treatment. After using 100 centimeter of leaching water the results show the desalinization for continuous ponding with 74 percent,and cause a decrease in exchange sodiom percent(ESP) with 50 percent respectively. The comparison between dealkalization and desalinization in field tests, and experimental models of leaching showed that, new inverse model respect to other experimental models has a better coordination by the field data. After this  model “Reeve”, “Hoffman”, “Pazira”and “Kawachi”, “Leffelaar” and “Sharma” models take position. Finally by usage of new inverse equation, we plot a curves of desalinization and dealkalization.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Investigation of Leaching Requirement of Continuous and Alternate Ponding Methods in Saline and Sodic Soils in South of Khouzestan Province

In this study, leaching experiments were carried out by both continuous and alternate ponding methodsin the south of Khouzestan province. In equal applied water leaching, alternate ponding leachingmodel had a better performance than continuous ponding method in desalinization and dealkalization.In term of alternate method,there was not ayn difference between 5 and 8 day periods in one-meterdept...

متن کامل

Slight and Moderate Saline and Sodic Soils Characterization in Irrigated Agricultural Land Using Multispectral Remote Sensing

Around the world, especially in semi-arid regions, millions of hectares of irrigated agricultural land are abandoned each year because of the adverse effects of irrigation, mainly secondary salinity and sodicity. Accurate information about the extent, magnitude, and spatial distribution of salinity and sodicity will help create sustainable development of agricultural resources. In Morocco, sout...

متن کامل

morphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials

ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...

15 صفحه اول

The Appraisal use of Gypsum for Reclamation of Solin and Sodice Soils in Southern Khuzestan

Soil correction is one of the ways in agriculture lands development. The sodic ion alongside salin vocalizes the salin-sodic soil and cause divulge in plants growth. So necessary coure of action for the Soil correction by physical and chemical ways such as usage of calsium on the leaching is inevitable. In this study, area soils are digged from deep profiles of 0-20, 20-40, 40-60, 60-80 and 80-...

متن کامل

Investigation and Statistical comparison of the soil empirical desalinization models for salin-sodic soils (Case study: Khuzestan province)

Accumulation of soluble salts in arid areas which are similar to most regions of Iran is inevitable in soil surface and profile because of low precipitation and high evaporation. High concentration of soluble salts in soil profile caused severe problems for root water uptake thus plant growth stopped. Reducing soil salinity to optimized content by leaching and avoiding soil pounding must be con...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 1  شماره 2

صفحات  87- 98

تاریخ انتشار 2633-02-20

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023