Rice planting experiment under Se-rich and Cd-high geological background

To make full use of the results of Se-rich soil found in agro-geological survey and develop the safe utilization of Se-rich land in Se-rich and high Cadmium (Cd) areas, 7 rice varieties, silicon fertilizer regulation and conventional farming methods have been select as the control parameters by setting up the test field and the control field. The results show that: (1) The Silicon fertilizer has dual effects on promoting the release of available states of Se and Cd by regulating soil physical and chemical properties and on reducing available states of Cd by reacting with Cd²⁺, making rice more conducive to the enrichment of Se but less conducive to the enrichment of Cd. (2) The rice kinds of "Shenliangyou 5814" and "C liangyou huazhan" have better effects on enrichment of Se and on inhibition of enrichment of Cd.