Vorlage Uni hh plakat A0

(2) : Andreas Kubiera, Richard T. Wilkinb, Thomas Pichlera, Cadmium in soils and groundwater: A review. Applied Geochemistry 108 (2019) 104388

(3) : Khalid A. Alaboudia,, Berhan Ahmeda, Graham Brodiec. Phytoremediation of Pb and Cd contaminated soils by using sunflower (Helianthus annuus) plant. Annals of Agricultural Sciences Volume 63, Issue 1, June 2018, Pages 123-127

(4) : Syed Tahir, Ata-Ul-Karim, Long Cang, Yujun Wang, Dong mei Zhou. Interactions between nitrogen application and soil properties and their impacts on the transfer of cadmium from soil to wheat (Triticum aestivum L.) grain. Geoderma Volume 357, 1 January 2020, 113923

Tuproq xususiyatlari bug'doy navi (Annong-1124 va Ningmay-15) don hosilida Cd konsentratsining o’zgarishi va unga N ning ta’siri tahlilidan foydalanilgan holda quyidagilar aniqlandi:

• O’rtacha donda Cd miqdori uchun aniqlash chegarasi 0.003 mg kg-1 ni tashkil etdi

.

• N nisbati tuproq xususiyatlariga va bug'doy donining Cd kontsentratsiyasiga sezilarli ta'sir ko'rsatdi (3-rasm).



3-rasm. Tuproqning pH darajasi o’zgarish dinamikasi



• Tuproqning pH darajasi 5,49 dan 6,02 gacha bo'lgan va turli tajribalar orasida unchalik katta farq bo'lmagan. N ning ko’payishi pHning kamayishiga olib kelgan.
• Ushbu tadqiqotda tuproqning past pH darajasi, shuningdek, haddan tashqari N qo'llanilish darajasi ostida Organik modda parchalanishi natijasida organik kislota hosil bo'lgan.
• Natijalar shuni ko'rsatdiki, tuproqning pH darajasi esa N ning ko'payishi hisobiga 6,0 dan 5,49 gacha pasaygan. etkazib berish 0 dan 300 kg.ha 1 gacha, AN-1124 dagi Cd kontsentratsiyasi 0,21 dan 0,27 mgkkg − 1 gacha bo'lgan.

4-rasm. An-1124 da o'rtacha don Cd konsentrasiyasi (z-o'qi) bo'yicha N o'g'it stavkalarining (x-o'qi) tuproq pH(y-o'qi) bilan o'zaro ta'sirini ko'rsatuvchi javob yuzasi.

1-rasm: Ko'rsatilgan pH diagrammalariga nisbatan konsentratsiya: a) Cd (10−6.4 M), Cl (10−3 M), ΣCO2 (10−3M) va SO4 (10−3 M) uchun pH 4 dan 7 gacha bo'lgan spetsifikatsiyalar. b) Cho’kindining eruvchanligi pH va CO2 ning harorati 10−3 dan 10 from2 M gacha. C) Eritilgan sulfid diagrammasiga nisbatan pH 6 da eruvchanligini ko'rsatadigan kontsentratsiya va ichimlik suvi standartlari uchun namuna kontsentratsiyasi ko'rsatilgan (3 dan 5 mkg / l)..