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运用同位素示踪技术研究了交换钙对~(89)Sr在小麦及其连作作物大豆中积累的影响。结果表明,交换钙将抑制~(89)Sr由土壤向小麦和大豆植株的输运和积累。~(89)Sr在该两种作物中的滞留浓度C_i与交换钙量x呈线性负相关:麦根(?)_1=124.2-10.1x,麦秸(?)_2=99.3-3.8x,麦壳(?)_3=40.1-6.0x,麦粒(?)_4=12.3-1.5x;大豆根(?)_1=333.0-53.5x,豆秸(?)_2=230.2-36.5x,豆壳(?)_3=240.5-42.3x,豆叶(?)_4=309.2-48.9x,豆籽(?)_5=11.8-1.6x。
The effects of calcium exchange on the accumulation of 89 Sr in wheat and its cropping soybean were studied using isotope tracer technique. The results showed that calcium exchange would inhibit the transport and accumulation of ~ (89) Sr from soil to wheat and soybean plants. The concentration of ~ (89) Sr in the two crops was linearly and negatively correlated with the exchangeable calcium x: wheat root (?) _1 = 124.2-10.1x, wheat straw (?) _2 = 99.3-3.8x, wheat straw (?) _3 = 40.1-6.0x, grain (?) _4 = 12.3-1.5x; soybean root (?) _1 = 333.0-53.5x, soybean straw (?) _2 = 230.2-36.5x, ) _3 = 240.5-42.3x, bean leaves (?) _4 = 309.2-48.9x, bean seeds (?) _5 = 11.8-1.6x.