Remediation Technology for Combined Pollution of Lead and Cadmium in Farmland Soil

Apart from the advantages of general biological remediation technologies, microbial remediation technology also has the characteristics of relatively short remediation time. [...]it has become a hot spot both at home and abroad. 3.3 Agronomic improvement measures In farmland soil, the management of agronomic measures will also affect the absorption of heavy metals such as cadmium and lead by crops, such as irrigation methods, fertilization types and crop characteristics. [ 351 found that the effects of different types of nitrogen fertilizers on the accumulation of heavy metal cadmium vary widely. [...]in the actual production, it is required to implement rational fertilization, to avoid excessive use of heavy metals such as cadmium, lead and promote heavy metal cadmium, lead absorption of fertilizers. Because of the significant differences in the absorption and accumulation of heavy metals between different crops, screening low-accumulation crop varieties is also an effective means to reduce the risk of heavy metal pollution. High concentrations of heavy metal pollution can significantly reduce the biomass of the organisms used and even directly kill the organisms used. [...]the large-scale application of biological remediation technology has a long way to go. 5Prospects At present, China's farmland is seriously polluted by heavy metals , and the situation is complicated.