中文摘要：

通过营养液栽培试验，探究了巴西10号和本地2号2个大豆基因型在氮、磷、钾、钙、镁、硫、铁等必需营养元素缺乏条件下植株体内养分含量的变化。结果表明，与全素（CK）相比，缺氮、缺钾和缺镁处理能增加大豆植株磷含量；缺镁和缺钙处理增加了植株的钾含量；而缺磷处理降低了植株钾含量；缺钾处理增加了大豆植株的钙含量，但降低了植株镁含量；缺氮和缺镁处理均能显著增加大豆植株铁含量．2个大豆基因型体内氮、磷和镁含量对不同处理的反应存在显著基因型差异．

英文摘要：

A hydroponic culture with soybean genotypes, BX10 and BD2, was carried out to study the change of plant nutrient concentration under Nitrogen （ N ）, Phosphorous （ P）, Potassium （ K）, Calcium （Ca）, Magnesium（Mg）, Sulfur（S） and Iron（Fe） deficient treatments. The results showed that compared to the control, N, K and Mg deficiencies increased P concentration; Mg and Ca deficiencies increased K concentration; P deficiency decreased K concentration ; K deficiency increased Ca concentration and decreased Mg concentration; N and Mg deficiencies increased Fe concentration in soybean. The responses of two soybean genotypes in N, P and Mg concentrations to the element deficiencies had significant genotypie variation.