应用ICP-AES等技术,研究了苦豆子常量、微量矿质元素含量、各部位吸收比例和不同时期的矿质元素需求量。结果显示:(1)成熟期苦豆子常量矿质元素比约为N:K:Ca:Mg:P:Na=11.91:8.27:7.54:1.02:1.00,微量矿质元素比值约为Fe:Zn:B:Cu:Mn=28.91:2.12:1.40:1.18:1.00;(2)各器官矿质元素含量因生育时期存在差异,微量元素在营养期茎中总量最高占全株总量的45.6%,而在成熟期种子中最高占全株总量的36.7%。(3)苦豆子在营养期需肥最多,盛花期次之,盛荚期最少。
Mineral dements content, absoption proportion and requirement of Sophora alopecuroides L. at different stages were studied by ICP-AES technology. The results showed that (1) During mature period, the average proportion for N : K : Ca : Mg : P : Na was 11.91 : 8. 27 : 7.54 : 1.02 : 1.00, and the average proportion for Fe : Zn : B : Cu : Mn was 28. 91 : 2. 12 : 1.40 : 1.18 : 1.00; (2)Mineral elements content of every part differs in each period, and stems at vegetative growth stage and seeds at mature period have the highest mineral elements content proportions of the whole plant which were about 45.6% and 36.7% respectively; (3)Sophora alopecuroides L. plants at vegetative growth stage have the largest fertilizer requirement, followed by the flowering period, and the smallest during pod period.