Analysis of control methods for Cd content in rice in low risk farmland with Cd pollution
In order to explore the methods for reducing the Cd content in rice fields with mild soil Cd pollution and further ensure the quality of rice,this experiment planted different rice varieties in low-risk areas with soil Cd pollution. Different treatment methods such as lime,silicon fertilizer,and selenium fertilizer were used to explore the influencing factors of heavy metal Cd accumulation in different rice varieties,providing reference for achieving Cd standards in rice fields with medium to low risk of soil Cd pollution.The results showed that there was a statistically significant difference in the accumulation of Cd content among different rice varieties (P=0.000401). It is feasible to ensure that the Cd content of rice does not exceed the standard by selecting suitable varieties,and the selection of suitable varieties should be prioritized over reducing the Cd content in rice through soil improvement and adding other nutrients;Applying lime in slightly acidic soil may reduce the Cd content in rice by passivating Cd in the soil;The Cd content in rice can be affected by controlling the degree of flooding.
Cdricefertilizationlow to medium risk farmlandcontrol methods
万方数据
维普
