سال انتشار: ۱۳۸۹

محل انتشار: دومین همایش ملی کشاورزی و توسعه پایدار (فرصتها و چالشهای پیش رو)

تعداد صفحات: ۴

نویسنده(ها):

فاطمه یوسفی – دانشجوی کارشناسی ارشد علوم خاک- دانشکده کشاورزی- دانشگاه فردوسی مشهد
علیرضا آستارایی – دانشیار گروه علوم خاک- دانشکده کشاورزی- دانشگاه فردوسی مشهد

چکیده:

Iran due to weather conditions and lack of adequate water resources is inevitable use of saline groundwater resources in the agriculture. Improper management of soils on the other hand has caused the contamination of soil cadmium. Also, differences in soil temperature in different months of the year affect the bioavailability of cadmium in the soil. Therefore, understanding the interaction of temperature and type of soil salinity is very important to reduce the toxicity of cadmium to reduce environmental pollution. The purpose of this research is the type of effect of salinity and soil temperature for soil cadmium recognize optimize utilization of water resources. It was tested as a completely randomized factorial design at three levels of cadmium (0, 15.30 mg kg-1) using salt, soil salinity and cadmium nitrate was supplied by three levels of sodiumchloride salt( 0, 25 and 50 mmol L-1). This preparation has been tested in three replicates and all treatments were kept in the incubator with two 20 and 40 degrees Celsius temperature for two weeks. This study showed that the temperature factor can be reduced or increased toxicity of cadmium in soil. Also, the increase in salinity has caused increased cadmium toxicity in the soil increased the toxicity was much greater in the saline soil conditions and temperature of 20 degrees Celsius to 40 degree Celsius temperatures.