十多年来,在评价农业环境时,常习惯以土壤“总汞”量来表明土壤的汞污染程度,并进一步做为估计粮食合汞量的间接判据.事实上,汞在自然环境中的迁移十分复杂,在土壤中它以多种形态存在着,其中能够进入植物体的仅是称作“可给态”的一部分,无疑这一部分的迁移性较强,本文暂称之为“可溶性汞’,并试图探求其测定方法,从而在评价农业环境上,用它来代替过去习用的“总汞”.汞对人类健康有严重的潜在危害,这主要是由于在生物因素的作用下,可以将环境中毒性较小的无机 For more than a decade, in assessing agro-environments, it has been customary to use soil “total mercury” as an indicator of soil mercury contamination and further as an indirect criterion for estimating the amount of mercury in the food. In fact, mercury is found in the natural environment Is very complicated. In the soil, it exists in various forms. Only the part that can enter the plant body is called the “giveable state.” There is no doubt that this part has strong mobility. This article tentatively refers to the “soluble Mercury ’and try to explore its method of determination, so as to replace the ”conventional mercury" used conventionally in the evaluation of agricultural environment Mercury has a serious potential hazard to human health mainly due to biological factors, Inorganic can be less toxic to the environment