华北农学报2018，Vol.33Issue(1)：217-223,7.DOI:10.7668/hbnxb.2018.01.031
镉及镉与铁、锌互作对水稻生长的影响
Effects of Cadmium Concentration and Interaction of Cadmium with Iron and Zinc Interaction on Rice Growth
摘要
Abstract
This work was designed to study the interaction effects of cadmium with iron,zinc on the growth of rice seedling and the cadmium absorption and translocation in the rice seedling. This study included two experi-ments,which both used the rice variety of Weiyou 46 and C-liangyou 266 under the hydroponic culture conditions. Experiment Ⅰ was designed to explore the cadmium concentration on the cadmium transportation in the rice seed-ling and included the treatments of 0.0,0.1,0.5,1.0,2.0 mg/kg Cd2+. ExperimentⅡwas designed to explore the interaction of cadmium with iron,zinc on the growth of rice seedling and included the treatments of CK (1.0 mg/kg Cd2+), TFe (CK +5.0 mg/kg Fe2+) and TZn (CK +5.0 mg/kg Zn2+). Results of Experiment Ⅰshowed that the above-ground biomass weight and cadmium transport coefficient decreased in the roots of two varie-ties with the increasing of Cd2+concentration,while the cadmium content and cadmium accumulation in the above-ground and roots,the roots cadmium uptake increased. There was a general trend that the above-ground biomass weight and cadmium content of Weiyou 46 were higher than that of C-liangyou266. Results of Experiment Ⅱshowed that applying Fe2+significantly increased the above-ground biomass weight of C-liangyou 266 and decreased the root Cd content of Weiyou 46,but with insignificantly effect on the cadmium transport and Cd content in other parts of both rice varieties. This indicated that Fe2+application would restrain the cadmium absorption in roots of Weiyou 46. Zn2+treatment increased the above-ground biomass weight and Cd content in both rice varieties,while reducing the Cd content in root of Weiyou 46. This indicated that Zn2+application would promote the transportation of Cd2+from root to top, and inhibit Cd2+uptake through inhibiting the development of rice roots. Therefore, adding Fe2+and Zn2+to soil can alleviate the toxic effects of cadmium on the rice growth.关键词
镉/铁/锌/水稻Key words
Cadmium/Iron/Zinc/Rice分类
农业科技引用本文复制引用
李姣,刘璐,杨斌,彭伟正,王惠群..镉及镉与铁、锌互作对水稻生长的影响[J].华北农学报,2018,33(1):217-223,7.基金项目
农财两部专项基金(农办财函[2015]38号) （农办财函[2015]38号）
湖南省科技计划项目(2016JC2031) （2016JC2031）
长沙市科技计划项目(kq1602012) （kq1602012）
