کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4566679 1628823 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short-term compost application increases rhizosphere soil carbon mineralization and stimulates root growth in long-term continuously cropped cucumber
ترجمه فارسی عنوان
برنامه کمپوست کوتاه مدت باعث افزایش کانی سازی کربن خاک ریزوسفر شده و باعث رشد ریشه در خیار به مدت طولانی می شود
کلمات کلیدی
خیار به طور مداوم بریده شده، کمپوست، خاک ریزوسفر، کانی سازی کربن، رشد گیاه
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش باغداری
چکیده انگلیسی


• Compost application increased C mineralization in rhizosphere soils.
• Compost application increased the microbial biomass C in rhizosphere soils.
• Root growth was positively influenced by the rhizosphere soil C mineralization.
• Compost application stimulated root growth in long-term continuous cropped cucumber.

Continuous cropping, a common agricultural practice in the world, often results in soil degradation and eventually lead to crop yield decline over time. Composts application has several advantages such as improving soil quality and increasing crop yields. However, little information is available regarding the effect of compost application on crop growth in continuous cropping systems. In this study, we investigated three long-term (>15 years) continuously cropped cucumber soils to examine the effect of compost application on carbon mineralization of rhizosphere soils and plant growth. All three soils were treated with/without compost, Bacillus subtilis and their combination. In general, the amounts of cumulative carbon mineralization in soils treated with compost were larger than those in untreated soils. The initial carbon mineralization rate, m0, was significant higher in soils treated with compost than in untreated soils. Soil microbial biomass carbon (MBC) and root growth was significantly (P < 0.05) increased by the compost addition, but was not statistically (P > 0.05) affected by the bacterial inoculation in all soils. In compost-treated soils, there was a higher faction of thin roots (<0.5 mm diameter) and a smaller fraction of thicker roots (>0.5 mm diameter) compared with untreated soils. Cucumber fruit yield was significantly positively correlated with the CCM and MBC values. Our results suggested that short-term compost application increases rhizosphere soil carbon mineralization and stimulates root growth in long-term continuously cropped cucumber.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scientia Horticulturae - Volume 175, 15 August 2014, Pages 269–277
نویسندگان
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