The Si fertilization named Si Lsi( Si fertilizer as a basic fertilizer and foliar spray) was selected in our previous study. In order to explore the effects of Si Lsi with water management on Cd concentrations in rice parts and dry biomass of early rice( Xiangzaoxian 45) and late rice( Fengyuanyou299),there were four treatments,including non-used silicon fertilizers with conventional irrigation( CK),non-used silicon fertilizers with irrigation in the whole stages( W),Si Lsi combined with conventional irriga...