Studies On Planting Crops On The Morphology Of Ni In Soil And Its Enrichment Characteristics

In this paper, eight maizes and five sorghums suitable for local cultivation in Shanxi Province were used as test crops. Two field experiments were conducted in a sewage irrigation area in Shanxi Province. Studying the amount of Ni, Fe-Mn oxides Ni, Exchangeable Ni, Carbonate Ni, Organic Ni, Residual Ni, and the characteristics of Ni uptake and accumulation in different crops. The results show:The transfer coefficient of nickel from soil and root to grain part was low after planting in the experimental area, and the exchangeable rate of soil in the soil was lower than that in the other two cultivars of maize Qiangsheng 101 and 51, Fu Shengyuan 52, Liaodan 565, Pingan 18 and Sorghum Jinza 103 and 23 and Carbonate Ni to the total of five morphologies is low to increase the stability of nickel in the soil and reduce the bioavailability of Ni in the soil. Reducing the potential harm to the environment and organisms; while these varieties of grain Ni content did not exceed the national food hygiene standards, it can give priority to recommend these varieties as a food crop in the local continuous planting.The transfer coefficient of nickel from soil and root to grain part was higher, and the content of exchangeable nickel in soil was higher than that in other varieties, such as strong maize Qiangsheng 49, Yongyu 3, Xianyu 335 and sorghum Jinza 18, Jinza 22 and Yangan 911. Bioactivity coefficient of Ni in the soils was higher than that in the soils, which increased the bioavailability of Ni in the soils, resulting in the Ni content in the grains being more than that in the national food hygiene Standard, and therefore can not be locally grown as food crops.The results will provide the theoretical basis and technical support for the improvement and sustainable utilization of low-enriched Ni crop species in the contaminated soil area.