CAJ | 학술논문

采用原子吸收光谱法对不同生育期桔梗各部位中的钙、镁含量和累积量进行了测定。结果表明：桔梗根部钙元素的累积量从现蕾期开始增高，开花期和种子期的钙元素累积量占根部全部钙元素累积量的75．8％。叶部钙元素的积累量开花期最高，为2．8 mg/株，苗期最低，为1．5 mg/株；茎部对钙元素的积累量也在开花期时最高，为11．6 mg/株。桔梗根部镁元素累积量在现蕾期最高，为6．5 mg/株。茎部镁元素累积量随着植株的生长呈下降状态，从苗期的3．7 mg/株降到种子期的1．0 mg/株。叶部镁的累积量一直呈缓慢增长，种子期最高，累积量仅为1．4 mg/株；由于桔梗整个生育期对镁、钙元素的需求量较低，因此，可在移栽前或现蕾期适当补充钙、镁等微量元素肥料即可满足桔梗对钙、镁的需求。
채용원자흡수광보법대불동생육기길경각부위중적개、미함량화루적량진행료측정。결과표명：길경근부개원소적루적량종현뢰기개시증고，개화기화충자기적개원소루적량점근부전부개원소루적량적75．8％。협부개원소적적루량개화기최고，위2．8 mg/주，묘기최저，위1．5 mg/주；경부대개원소적적루량야재개화기시최고，위11．6 mg/주。길경근부미원소루적량재현뢰기최고，위6．5 mg/주。경부미원소루적량수착식주적생장정하강상태，종묘기적3．7 mg/주강도충자기적1．0 mg/주。협부미적루적량일직정완만증장，충자기최고，루적량부위1．4 mg/주；유우길경정개생육기대미、개원소적수구량교저，인차，가재이재전혹현뢰기괄당보충개、미등미량원소비료즉가만족길경대개、미적수구。
The content and accumulation amount of Mg and Ca in different growth periods of Platycodon grandiflorus were determined by atomic absorption spectroscopy .The results showed that the accumulation a-mount of Ca in root began to increase from the squaring stage;the Ca accumulated in blossom and seed forma-tion periods accounted for 75 .8%of all in root;the Ca accumulation in leaves was the highest in blossom peri-od as 2.8 mg per plant, but the lowest in seedling period as 1.5 mg per plant.The Ca accumulation in stem was also the highest in blossom period as 11 .6 mg per plant .The Mg accumulation in root was the highest in squaring period as 6 .5 mg per plant .The Mg accumulation in stem declined with the growth of plants , which decreased from 3.7 mg per plant in seedling period to 1.0 mg per plant in seed formation period .The accumu-lation of Mg in leaves always increased slowly , and the highest amount was only 1.4 mg per plant, which ap-peared in seed formation period .The Platycodon grandiflorus demanded lower Mg and Ca during the whole growth period , so appropriate supplement of Ca and Mg fertilizers before transplanting or in squaring period could meet the demand .