Characterizing Se transfer in the soil-crop systems under field condition 田间条件下土壤-作物系统中硒的迁移特征.pdfVIP

Plant Soil DOI 10.1007/s11104-017-3185-1 REGULAR ARTICLE Characterizing Se transfer in the soil-crop systems under field condition Cheng Wang Junfeng Ji Fahua Zhu Received: 23 November 2016 /Accepted: 17 January 2017 # Springer International Publishing Switzerland 2017 Abstract and canola; whereas for the straw and root, wheat Aims A comparison was performed between plant spe- showed lower Se concentration than canola and cies to study Se accumulation and translocation in the rice. The net translocation coefficients of Se in crops under field condition. different soil-crop systems exhibited different pat- Methods Wheat, rice and canola were sampled with terns, suggesting that the difference is mainly respective cultivated soils from the Yangtze River Delta caused by a discrepancy in Se translocation from area. The concentrations of total Se and bio-available Se straw to grain. and a number of parameters (N, P, S, Fe, Ca, Mg, Al, K, Conclusions Wheat has a weaker capability to ac- Mn, pH and organic carbon) were analyzed, and the net cumulate Se compared with rice and canola, but a translocation coefficients of Se in the soil-crop systems significantly stronger capability to transport Se were calculated. from its straw to seed. These differences might Results The concentrations of Se in plants significantly be related to the influence of S on Se differences, differed between crop species, in spite of concen- comparing the biochemical behavior and transport trations of to