Keywords

Corn, Lupins, Chickpeas, Intercropping, Lead, Cadmium

Abstract

soil pot experiment was used to study the effects of corn, lupine and chickpea on the absorption and accumulation of PB and CD under different separation/intercropping methods. The experimental results showed that different separation/intercropping methods have different effects on the biomass changes of corn, lupine and chickpea. Different separation/intercropping methods significantly affect the absorption of PB in the underground parts of corn, but different intercropping methods have little effect on the PB content in the aboveground parts of corn. Plastic partitions and corn-chickpea intercropping can significantly reduce the uptake of PB in the corn underground. In corn monoculture, the PB content in the underground parts of corn treated with plastic separation and nylon mesh separation was 41.1% and 33.3% lower than that without separation, respectively. Without separate treatments, the PB content in the underground parts of corn under corn-chickpea intercropping was only 53.9% and 63.8% of that in corn monoculture and corn-lupin intercropping, respectively. Different separation methods have a greater impact on the cd content in the underground part of corn, but neither intercropping nor partitioning methods have much influence on the cd content in the aboveground part of corn. At the same time, the effects of different separation/intercropping methods on the pb and cd contents of lupine and chickpea were also discussed. The pb content of crop rhizosphere soil solution continues to decrease with the growth of crops, but the cd content continues to increase. Different separation/intercropping methods also have certain effects on the pb and cd contents of crop rhizosphere soil solutions.

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Original research done by Huang Yizong, Zhu Yongguan, Hu Ying, Liu Yunxia

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