菠菜对外源碘的生物地球化学吸收

The biogeochemical absorption by spinach fertilizing outer source iodine

通过在土壤中施放固体外源碘和对叶片进行液体外源碘的喷洒,研究了菠菜对外源碘的生物地球化学吸收。结果表明,在合适的含量范围内,菠菜中碘含量随土壤外源碘含量的增加和喷洒液中碘含量的增加而增加;土壤中外源碘施放的方式对菠菜碘的吸收产生明显影响;叶片喷洒的碘主要集中在叶片,说明碘在菠菜中属于不易循环元素。

The biogeochemical absorption of outer source iodine by spinach through fertilizing solid iodine in soil and spraying of liquid outer iodine in spinach leaves was studied. The result indicates that the iodine content in spinach increased with increasing outer source iodine rates and the application patterns of outer source iodine markedly affected the iodine absorption of spinach. The result also showed that most of iodine retain in spinach leaves by foliage dressing which indicated that iodine was not a recurrence element in spinach.