کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5758558 1622898 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of partial root-zone drying irrigation and water quality on soil physical and chemical properties
ترجمه فارسی عنوان
اثرات آبیاری خشک و رطوبتی ناشی از ریشه و کیفیت آب بر خواص فیزیکی و شیمیایی خاک
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Using recycled wastewater (RW) is considered to be a strategic choice for overcoming water scarcity worldwide, so there is a pressing need to improve irrigation and nutrient uptake to sustain crop yields and at the same time to reduce the negative impacts of RW. In the present study, tomato plants (Lycopersicon esculentum Mill. var. “Azmier”) were exposed to three different water qualities: recycled wastewater (RW); fresh municipal tap water (FW); and a blend of RW and stormwater (BW), in combination with five irrigation scenarios: full irrigation (FI) full plant water requirement; deficit irrigation (DI), with 75% and 50% of FI as DI75 and DI50, respectively; and partial root-zone drying (PRD), with 75% and 50% as PRD75 and PRD50, respectively. The effects of these treatments on soil hydraulic conductivity (Ks), soil pH, root growth, leaf area (LA) as well as the residual phosphorus (P), potassium (K+), calcium (Ca2+) and magnesium (Mg2+) in the soil were investigated. The results showed that there was no significant difference in the soil Ks. However, different types of irrigation waters significantly affected the soil pH, while irrigation scenarios had no effect on soil pH. Also, irrigation scenarios influenced root growth and LA, while PRD scenarios lowered soil P, K+, and Mg2+ concentration compared to DI. The results also showed that water quality influenced canopy coverage 107 days after planting (DAP). It is clear that PRD is a promising scenario for sustaining agriculture in areas with high water scarcity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural Water Management - Volume 182, 1 March 2017, Pages 117-125
نویسندگان
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