[Effects of Irrigation Techniques on Migration and Accumulation of Cd and As in a Calcareous Soil-wheat System].

， which enlarged the proportions of specifically adsorbed-As （F2-As） by 9.73%-31.36%. Therefore， the variation of the above-mentioned genera has driven the bio-transformation of Cd and As in soil， and DI decreased Cd concentrations in the soil solution by 73.78% maximally compared with that of FI and further inhibited Cd transport from glume to grain. However， the DI treatment improved the concentrations of As in the soil solution by 171.73% maximally but inhibited As translocation from rachis and glume to grain compared with those in FI and SI， respectively. Additionally， DI alleviated the accumulation rates of Cd and As in wheat grain and finally reduced the concentrations and accumulation of Cd and As in the grains. In summary， drip irrigation is a better pathway to save water resources and reduce Cd and As accumulation in wheat grain cultivated in calcareous soil with moderate Cd and As co-contaminated agricultural land， which could provide a new strategy for the safe utilization of heavy metal-contaminated farmland.