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Integrating Water, Nitrogen, and Salinity in Sustainable Irrigated Systems: Cover Crops versus Fallow

Cover cropping techniques are efficient for reducing pollutant leaching, avoiding soil erosion, or enhancing soil properties of agricultural soils. However, few studies evaluate the overall effect of cover crop (CC) on agricultural ecosystem functioning, and it is necessary to ensure that advantages of CC are not compensated by potential negative effects such as soil salinization. To improve the understanding of these complex processes, the authors analyzed water, nitrogen, and salinity dynamics in a maize cropping system with CC (vetch, barley, and fallow treatment), which was introduced in the intercropping season using both an experimental and modeling approach. As compared with a control treatment, the CC reduced nitrate leaching (64% for the barley treatment and 29% for the vetch treatment) without increasing soil salinity. In addition, the CC reduced the top layer salinity when maize was sown. Although the CC reduced with respect to fallow the net salt losses, in these conditions, excessive irrigation to favor salt leaching was not needed and, therefore, deep-water contamination risk with nitrate was reduced.

ادغام آب، نیتروژن و Salinity در سیستم‌های Irrigated پایدار: محصولات و محصولات را پوشش دهید. مجله آبیاری و زه‌کشی، ۱۴۰ (۹)، A۴۰۱۴۰۰۲

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موضوع مقاله:

• Water Science and Technology
• Civil and Structural Engineering
• Agricultural and Biological Sciences (miscellaneous)

• علوم و فن‌آوری آب
• مهندسی عمران و طراحی ساختار
• علوم کشاورزی و زیستی (متفرقه)

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سال نشر: 2014 | تعداد ارجاع: 76
American Society of Civil Engineers (ASCE)
Journal of Irrigation and Drainage Engineering

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• مقاله Water Science and Technology
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• مقاله علوم و فن‌آوری آب
• ترجمه مقاله علوم و فن‌آوری آب
• مقاله Civil and Structural Engineering
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• مقاله مهندسی عمران و طراحی ساختار
• ترجمه مقاله مهندسی عمران و طراحی ساختار
• مقاله Agricultural and Biological Sciences (miscellaneous)
• ترجمه مقاله Agricultural and Biological Sciences (miscellaneous)
• مقاله علوم کشاورزی و زیستی (متفرقه)
• ترجمه مقاله علوم کشاورزی و زیستی (متفرقه)