کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5743518 | 1412314 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of drip irrigation level on salt leaching and vegetation growth during reclamation of coastal saline soil having an imbedded gravel-sand layer
ترجمه فارسی عنوان
تأثیر سطح آبیاری قطره بر میزان شوری نمکی و رشد گیاهان در هنگام احیا خاک شور ساحلی با استفاده از لایه ماسه ای ماسه ای
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Water resources are very scarce in coastal saline areas; as such, water-saving irrigation regimes are needed. Drip irrigation combined with an imbedded gravel-sand layer has been proved to be a good method for constructing ecological landscapes in coastal saline soils. A 3-yr experiment (2009-2011) was conducted to evaluate the effects of different drip irrigation amounts controlled by soil matric potentials (SMP) (â5, â10, â15, â20, and â25Â kPa) on soil salinity and landscape species growth in coastal saline soils with an imbedded gravel-sand layer in Northeast China. The mean electrical conductivity of the saturated paste extract (ECe) of the soil profile significantly decreased to less than 4Â dSÂ mâ1 for SMP treatments higher than â20Â kPa after two months, then remained at the low level. No significant differences in the extent of desalinization occurred among the drip irrigation treatments based on â5, â10, â15, and â20Â kPa SMP. The â20Â kPa treatment could reduce irrigation water usage by 150-610Â mm in the first three years of reclamation compared with higher SMPs (â5, â10, and â15Â kPa). Variations of pH of the saturated paste extract (pHe) in the soil profile were relatively moderate. After the 3-yr experiment, the landscape species that are moderately sensitive or sensitive to salt grew well, with an average survival rate of 72%. To balance salt leaching and water saving, a SMP of â20Â kPa could be used to guide landscape construction in the first three years of reclamation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 108, Part A, November 2017, Pages 59-69
Journal: Ecological Engineering - Volume 108, Part A, November 2017, Pages 59-69
نویسندگان
Jiaxia Sun, Yaohu Kang, Shuqin Wan, Wei Hu,