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《Acta Scientiae Circumstantiae》 1998-02
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EFFECT OF ROOT EXUDATES ON THE BEHAVIOR OF HEAVY METALS IN THE RHIZOSPHERE

Li Huafen,\ Zhang Fusuo,\ Li Chunjian,\ Mao Daru(College of Agricuttural Resources and Environmental Science, China Agricultural University, Beijing\ 100094)  
Spliting root experiments were conducted to study the effect of iron nutrition on the uptake, translocation and transport of heavy metals by roots of three rice varieties growing under Fe deficient and Fe sufficient conditions. The results showed that the Fe concentrations in shoots of Changyou 87 88 under Fe deficient stress were 58% of that of Fe sufficient treatment, and Cd, Zn concentrations were 1.4 times higher than that of Fe sufficient treatment. Fe concentrations in shoots of Yuanyouyihao and Kechang89 113 under Fe deficient stress were also lower than that of Fe sufficient treatment, but the differences were smaller than the former. Cd and Zn concentrations were also higher than that of Fe sufficient treatment, but the differences were also smaller than that of Changyou 87 88. The Mn concentrations in shoots of Changyou 87 88 and Yuanyouyihao from Fe deficient treatment were higher than that of Fe sufficient treatment, but the Mn concentrations in shoots of Kechang 89 113 showed no significant difference between treatments.
【Fund】: 国家自然科学基金
【CateGory Index】: X503.23
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