摘要
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 technic of the isotope tracer applied to explore the effect exchange calcium on accumulation of strontium-89 in wheat and continuous cropping soybean. The results showed that it will inhibit the transport and accumulation of strontium 89 from soil to wheat and soybean plants . Linear negative correlations were found between the remainder quantity of strontium -89 in wheat andsoybean with the quantity of exchange calcium. Wheat root :C1 = 124. 2-10.1x,straw:C2 = 99. 3-3.8x,husk:C3 = 40. 1 - 6. 0x,seed:C4 = 12. 3-1. 5-rtsoybean root ,C'1 = 333. 0 - 53. 5x,straw:C'2 = 230.2-36. 5x,hrsk:C'3, = 240. 5-42. 3x,leaf:C'4 = 309. 2-48. 9x,seed:C'5 = 11. 8-1. 6x .
基金
浙江省科委"八五"重点项目
关键词
锶-89
放射生态学
交换钙
小麦
大豆
strontium-89 radioecology
exchange calcium
wheat
soybean
