نوع مقاله : مقاله پژوهشی
نویسندگان
1 فارغ التحصیل کارشناسی ارشد گروه علوم و مهندسی خاک، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
2 استاد، عضو هیأت علمی گروه علوم و مهندسی خاک، دانشگاه علوم کشاورزی ومنابع طبیعی خوزستان
3 استادیار، عضو هیأت علمی گروه علوم و مهندسی خاک، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
4 دانشیار، عضو هیأت علمی گروه مهندسی تولید و ژنتیک گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In order to evaluate the effect of zinc, sulfur inoculated with Thiobacillus, and salinity caused by sodium chloride on some growth parameters and uptake of phosphorus, potassium, and zinc by rapeseed, a greenhouse experiment was conducted in factorial randomized complete block design with three replications. Treatments consisted of soil salinity at four levels (1, 4, 7, and 10 dS m-1), sulfur inoculated with Thiobacillus at two levels (0 and 500 kg ha-1) and zinc sulfate at three levels (0, 25, and 50 mg kg-1). The results showed that salinity stress affected all studied traits and caused a significant reduction in growth parameters such as plant height, root length, shoot and root dry weight, and reduced nutrient uptake; however, salinity caused a significant increase in the roots and shoots sodium concentration. Application of sulfur along with 25 mg kg-1 zinc under salinity stress improved growth traits and increased the concentration of phosphorus, potassium, and zinc by 15.26%, 110.5%, and 376.6%, respectively, and reduced the concentration of sodium in the aerial part of the plant by 34.77% as compared to the control treatment. In general, the results showed that the use of sulfur inoculated with Thiobacillus and the optimal level of zinc sulfate fertilizer (25 mg kg-1 soil) affected soil properties as well as the direct supply of macro elements; consequently, the amount of nutrient uptake increased under salinity stress and harmful effects of salinity on plants was mitigated by reducing sodium uptake.
کلیدواژهها [English]