نوع مقاله : مقاله پژوهشی
نویسندگان
1 سازمان حفاظت محیط زیست
2 دانشگاه یزد، دانشکده منابع طبیعی و کویرشناسی -گروه مدیریت مناطق خشک و بیابانی
3 دانشگاه یزد، دانشکده علوم پایه -گروه زیست شناسی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This Research was conducted as a three-factorial factorial experiment in a randomized complete block design with three replications and for six months in field conditions. The factors studied included plant growth-promoting bacteria (four levels: no inoculation, inoculation with Bacillus halotolerans, inoculation with Bacillus amyloliquefaciens and simultaneous inoculation of both bacteria), irrigation water salinity stress (four levels: control 0.3, 4, 8 and 12 dS/m) and biosolids (three levels: no application, application 10 and 30 tons/ha). The results showed that salinity had a significant effect on reducing the uptake of elements, such that the uptake of phosphorus (20.3%), potassium (32.6%), calcium (31.7%) and chlorophyll (14.1%) decreased. In contrast, salinity stress led to an increase in antioxidants (160.3%), total phenols (88.2%) and proline (112%).. Simultaneous application of biosolids and bacteria increased leaf magnesium and calcium content by 10 and 11%, respectively. Under saline irrigation conditions, bacteria increased potassium (32.4%), calcium (37.6%), and phosphorus (60.1%) uptake and decreased sodium uptake by 32.5%. Bacterial inoculation, especially the combination of the two bacteria, increased soluble sugars (39.3%) and proline (137.7%) and decreased antioxidants (110.2%) and phenols (65.3%). Finally, inoculation of B. halotolerans and B. amyloliquefaciens bacteria improved plant tolerance to salinity. These results emphasize the need to integrate microbiological approaches and organic resource management in saline land reclamation programs.
کلیدواژهها [English]
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