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.%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 genotypic variation.
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