Open AccessComparison of cadmium and arsenic accumulation characteristics and remediation potential of different forage plants
Author(s) -
Jingmin Yang,
Zhi Hong Hang,
Na Jiang,
Zuran Li,
Gahonzire Bonheur,
Yanqun Zu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/787/1/012057
Subject(s) - cadmium , forage , arsenic , sorghum , shoot , pennisetum , agronomy , environmental remediation , biology , pennisetum purpureum , environmental science , contamination , chemistry , ecology , dry matter , organic chemistry
A field experiment was carried out in a farmland polluted by cadmium (Cd) and arsenic (As) in Yunnan Province to study Cd and As accumulation characteristics of 15 different forage plants, so as to screen out plants for comprehensive utilization in the farmland polluted by Cd and As. The results showed that the best growth conditions were for ‘Teosinte’ and ‘King grass’, the worst growth condition was ‘Pennisetum’. The Cd contents of shoots of ‘King grass’, ‘Sweet elephant grass’, ‘Pennisetum’, ‘Teosinte’ and ‘Alfalfa’ did not exceed the Chinese feed hygiene standard (≤ 1mg kg −1 ). The content of total arsenic in shoot of ‘Tall fescue’ did not exceed the feed hygienic standard (≤ 4 mg kg −1 ). ‘Sorghum12FS9003’ and ‘Sorghum×Sudan’ have the strongest ability to enrich Cd and As, which could be used for remediation of soil polluted by Cd and As. ‘Alfalfa’ has low Cd and As accumulation capacity.