有机物料对镉、铜污染土壤上水稻生长及镉、铜吸收的影响

Effect of Organic Materials on Rice Growth and its Uptake of Cooper and Cadmium on Cd and Cu Polluted Soils

采用盆栽法研究了稻草和紫云英对两种镉铜污染土壤上水稻的生长及镉铜吸收的影响。镉污染土壤上添加稻草，抑制水稻生长，但不显著影响产量和糙米中镉含量。镉污染土壤添加紫云英，水稻生长旺盛，略微提高产量和糙米中镉含量。铜污染土壤添加稻草，促进水稻的生长，降低潮土上水稻产量，但却提高了红壤上水稻的产量，显著降低了糙米中铜含量。铜污染土壤上添加紫云英，促进水稻的生长，提高潮土上水稻的产量，降低红壤上水稻的产量，降低潮土上糙米的铜含量，但对红壤上糙米铜含量则没有显著影响。

The effect of rice straw and Chinese milk vetch on rice growth and its uptake of Cu and Cd on Cd and Cu polluted soils by pot experiments was studied.On Cd polluted soils,rice straw inhibited the growth of rice without significant effect on the yield and Cd contents of the grains.Chinese milk vetch promoted the growth of rice,raised slightly the yields.On Cu polluted soils,rice straw promoted the growth of rice,decreased the yield of fluvo acquic soil treatment while increased that of red soil treatment.Rice straw depressed significantly the Cu content of the grains.Chinese milk vetch promoted the growth of rice,increased the yield of fluvo aquic soil treatment while decreased that of red soil treatment.It decreased significantly Cu content of fluvo aquic soil treatment,however,had no significant effect on that of red soil treatment.