我国北方大部分地区由于土壤偏碱,有效铁含量低,导致多种植物患失绿症,俗称黄叶病,果树更为突出。该病严重影响果树生长和果实的产量。长期以来,一直采用硫酸亚铁防治,但由于铁离子移动性差,复绿效果不甚理想。本所应用同位素示踪研究了腐植酸对铁离子在植物体内运转分布的促进 Most parts of northern China due to soil alkaline, low effective iron content, leading to a variety of plants suffering from chlorosis, commonly known as yellow leaf disease, fruit trees are more prominent. The disease severely affects fruit tree growth and fruit yield. For a long time, ferrous sulfate has been used for prevention and treatment, but due to the poor mobility of ferric ions, the effect of complex greening is not very satisfactory. The Institute of Applied isotope tracing of humic acid on iron ions in the plant functioning and distribution of the promotion