کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8872826 1622873 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A positive response of rice rhizosphere to alternate moderate wetting and drying irrigation at grain filling stage
ترجمه فارسی عنوان
پاسخ مثبت ریزوسفر برنج به جایگزینی متوسط ​​خیساندن و خشک شدن آبیاری در مرحله پر شدن دانه
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
The terminal restriction fragment length polymorphism (T-RFLP) analysis revealed that the diversity indices of bacterial communities were higher in drying phase as compared to the initial treatment of AMWD regime, but the evenness index decreased. Remarkably, AMWD process increased the proportion of aerobic bacteria, such as Azotobacter, nitrifying bacteria, phosphate and potassium solubilizing bacteria (which participate in the nutrient cycling). In addition, the increase of enzyme activity under AMWD regime promoted the release of nutrients, thereby enhancing the amounts of NO3−-N, available phosphorus (P) and potassium (K) in soils, which met rice nutrient demands at late grain filling stage. This led to a promotion in plant physiological activities and grain filling, and hence increased grain yield. From these results we infer that there was a positive response of rice rhizosphere to AMWD irrigation at grain filling stage, which laid the groundwork to set up a sound irrigation system in rice fields without reducing its yield.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural Water Management - Volume 207, 30 August 2018, Pages 26-36
نویسندگان
, , , , , , , ,