栝楼生长发育中矿质元素动态分析

Dynamic Analysis of Mineral Elements During Growth and Development Stage of the Kirilowii Plant

应用ICP-AES技术测定了栝楼不同生育时期各器官的主要矿质元素含量,分析了栝楼生长发育中主要矿质元素吸收和累积动态。结果显示:(1)栝楼矿质元素随生育时期变化。K,P,Ca,Mg,Fe,Mn,Zn,Cu,Mo累积量在10月最高,分别为:3 695.90,445.88,9 649.32,2 652.10mg.株-1,324 398.29,40188.65,22 383.13,36 054.58,61.95μg.株-1,而B累积量最高峰出现在9月,为8 690.97μg.株-1。(2)矿质元素在栝楼各个器官分布不均衡,K和P在栝楼果皮含量最高,分别达到27.65和2.63mg.g-1,Ca和Mg含量在栝楼叶中最高,分别达33.28和5.73mg.g-1,Fe,Mn,B的含量均在栝楼根最高,分别达:4 069.74,127.73,24.75μg.g-1,Zn和Mo在栝楼种子中最高,分别达到68.61和1.07μg.g-1(3)栝楼体内所含矿质元素在整个生育期中的累积呈S型,7月中旬到9月中旬为快速增长期。本试验结果为栝楼质量评价和合理施肥提供了理论依据。

ICP-AES technology was used to determine the major mineral elements content and analyze the dynamic and cumulative amount of the main absorption during the growth and development stage of the Kinlowii organs plant.The result showed as follows：（1）The mineral elements were changing in the different stage.The highest mineral element accumulation of K,P,Ca,Mg,Fe,Mn,Zn,Cu and Mo occured in October,their values are 3 695.90,445.88,9 649.32,2 652.10 mg per plant,324 398.29,40 188.65,22 383.13,36 054.58 and 61.95 μg per plant separately.But the highest value of B occured in September and the value was 8 690.97 μg per plant.（2） the distribution of mineral element in the kirilowii plant was not even,the contents of K and P were highest in kirilowii peel,they can reach 27.65 and 2.63 mg·g-1.The contents of Ca and Mg were highest in kirilowii leaves,they can reach 33.28 and 5.73 mg·g-1.The contents of Fe,Mn,B were highest in kirilowii roots,they can reach： 4 069.74,127.73,24.75 μg·g-1.The contents of Zn and Mo were highest in kirilowii seeds,they can reach 68.61 and 1.07 μg·g-1.（3） the cumulation dynamic of mineral elements in kirilowii plant during the whole stages was S-type,and the plant showed rapid growth from the mid-July to mid-Spetember.The information of this study will supply a scientific data for the quality assessment and rational fertilization of kirilowii plant and harvestment.