Abstract:In order to find out the effect of plasma seed treatment on nickel absorption and growth of different soybean varieties, a pot experiment was carried out in Gongzhuling district of Jilin Academy of Agricultural Sciences in2017.The experimental soil was collected from the nickel contaminated soil around the nickel mines in Panshi city.Before sowing, soybean seeds were pretreated with plasma, and the treatment doses were 0, 0.5, 1.0, 1.5, 2.0, 2.5and 3.0 A, respectively. The pretreated seeds were placed for 24 hours and sown in pot. The results showed that different soybean varieties had different reaction to plasma treatment. The single plant biomass and total nickel absorption of Jiyu 47 and Jiyu 71 presented a single-peak curve trend with statistical significance with the treatment dose,while no correlation was observed between Jiyu 202 and Jiyu 82. According to the regression equation, when the treatment dose was 1.9-2.5 A, the biomass per plant and total nickel absorption of Jiyu 47 and Jiyu 71 reached the maximum value, which was 15.3%-20.1% higher than the control. From the distribution of nickel in soybean, the content of nickel in seeds was 1.8-3.5 mg/plant, accounting for 43%-55% of the total nickel absorption in soybean,and the content of nickel in soybean variety Jiyu 71 was higher than that in high-oil and conventional varieties.These results provide a reference for improving the accumulation capacity of heavy metals in crops by plasma treatment, so as to promote the rational development and utilization of heavy metal polluted farmland and avoid the waste of land resources.