H^(14)CO_3^-─HCO_3^-对柑桔幼苗叶片含铁量及^(14)C放射性强度的影响

EFFECTS OF H^(14)CO_3^-—HCo_3^- ON LEAF IRON CONTENTS AND ^(14)C RADIOACTIVITY OF CITRUS SEEDLINGS

研究了介质中N14CO-HCO3浓度对三种柑桔幼苗叶片含铁量的影响以及叶片14C放射性强度与含铁量的关系。结果表明，叶片含铁量随介质H14COHCOO2浓度提高而降低，14C放射性强度随N14CO3—HCO3浓度提高而增加。叶片14C放射性强度与含铁量呈反相关。3种试材中，除酸橙叶片14C放射性强度例外，趋势基本一致。

Higher medium H14CO3-HCO3 rates caused leaf iron contents to decrease and leaf 14C radio-activities to increase. Thus these existed a negative correlationship between leaf iron contents and 14C radio-activities.