不同土壤改良剂对大豆富集重金属的影响

在广西环江开展了土壤改良剂对大豆富集重金属的影响研究,结果表明:土壤改良剂(煤灰、菌渣、蚕沙)均能在大豆苗期、结荚期和成熟期有效降低大豆中重金属含量。菌渣对大豆苗期重金属抑制效果最好,蚕沙对成熟期重金属吸收的抑制效果最佳,而煤灰在结荚期抑制重金属效果优于其他的改良剂,并且对减少大豆籽粒中重金属含量作用效果最好。

Effects of Different Soil Ameliorants on Soybean Accumulating Heavy Metals

The researches were carried out to investigate the effects of soil ameliorants on the accumulation of the heavy metals for soybean crops in Huanjiang of Guangxi. The results showed that the heavy metal contents in soybean crops, during the seedling stage, podding stage and mature stage, were all effectively reduced by the effects of soil ameliorants (coal ash, fungi residues, silkworm excrement). The heavy metals inhibition effects of mushroom residue for soybean of seedling stage were best. The heavy metals inhibition effects of silkworm excrement for soybean during mature stage were best. And the heavy metals inhibition effect of coal ash for soybean during podding periods was better than the other soil ameliorants and the effect to reduce the heavy metal content in the grain of soybean was the best.