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作 者 ：王丽霞1,2，汤举红2*，罗庆熙3，段九菊4

期 刊 ：西北植物学报 2012年 5期 页码：1002~1006

关键词：茎瘤芥；硫；硒；矿质营养；干物质；营养品质；

Keywords:Brassica juncea var.tumida, sulfur, selenium, mineral nutrition, dry matter, nutritional quality,

摘 要 ：以茎瘤芥品种‘涪杂1号’为材料，通过盆栽实验探讨不同浓度的硫（S）、硒（Se）配施处理对茎瘤芥干物质积累、矿质元素吸收及膨大茎营养品质的影响，为生产中合理施用硫、硒肥提供理论依据。结果表明：与对照(S₀Se₀，未施硫硒肥)相比，增施硫、硒肥处理均能显著提高茎瘤芥的根、膨大茎、叶片和单株干物质产量，并以S₅₀Se₁[S/Se=50 (mg/kg)/1 (mg/kg)]和S₁₀₀Se₁的处理效果较好，其单株干物质产量分别比对照显著增加32.3%和36.2%；不同硫、硒浓度配施处理对茎瘤芥13种矿质元素积累的影响不同，主要显著促进了茎、叶对氮、磷、钾、硫、硒的吸收积累，而对其它元素的影响不显著，其中茎、叶的硒含量以S₅₀Se₃处理最高，硫含量以S₁₀₀Se₁处理最高；各硫硒配施处理对膨大茎营养品质的影响不同，其中S₅₀Se₁和S₅₀Se₃处理能显著提高膨大茎有机硒、总氨基酸和粗蛋白含量，而对维生素C和可溶性糖含量无显著影响。可见，适宜的硫硒配施可以明显促进其对矿质元素的吸收，提高植株干物质积累，有效改善茎瘤芥膨大茎营养品质，且硫硒配施用量以S 50 mg/kg、Se 1 mg/kg为宜。

Abstract:Tuber Mustards (Brassica juncea var.tumida) were studied in dry matter yield,mineral accumulation and nutrition quality,on the five levels of Sulfur (S) and Selenium (Se) fertilizer added to the soil.The results showed that the yields of dry matter were increased significantly by the addition of the S and Se to soil.The higher yields of dry matter were obtained in the treatments of S₅₀Se₁[S/Se=50 (mg/kg)/1 (mg/kg)] and S₁₀₀Se₁,with increases of 32.3% and 36.2%,respectively.All treatments could promote the absorption of nitrogen (N),phosphorus (P),potassium (K),S,Se in both leaves and tubers,but had no apparent effect on the other elements in leaves or tubers.The highest value of S content in leaf and tuber was related with the treatment of S₁₀₀Se₁,while the highest value of Se content in leaf and tuber was related with the treatment of S₅₀Se₃.In the aspect of tuber quality,the treatments of S₅₀Se₁ and S₅₀Se₃ could improve the quality of tuber significantly,including organic Se,total amino acid,and crude protein.In conclusion,the combination of S and Se fertilizer was feasible for tuber mustard in accumulating of mineral element,improving the dry matter yield and nutritional quality，and the treatment of S₅₀Se₁(S=50 mg/kg,Se=1 mg/kg) was recommended.

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