硒肥对马铃薯硒含量及产量的影响

Effect of Selenium Fertilizer Application on Selenium Contents and Yield of Potato

硒是人体必需微量元素,提高食物中硒的含量是增加人体硒营养的主要途径。为增强富硒马铃薯生产,试验选择‘大西洋’、‘费乌瑞它’和‘兴佳2号’3个马铃薯品种进行苗期喷施硒肥处理,研究硒肥对马铃薯不同时期根、茎、叶及块茎中硒含量及产量的影响,并分析其动态变化。结果表明,施硒肥处理后的马铃薯各部位硒含量测定值均较不施硒肥处理高;不同时期硒含量的动态变化除在茎中规律不明显,在根中表现为逐渐降低,叶中表现为单峰降低,而块茎中表现为单谷降低;产量结果也表现为施硒处理高于不施硒处理,3个品种平均产量较对照分别高11.39%、7.61%和9.67%,试验为中国马铃薯富硒产业的发展提供理论依据。

Selenium（Se） is one of the essential trace elements in human body. To increase Se contents in food is the main way to improve human＇s Se nutrition. ＇Atlantic＇, ＇Favorita＇ and ＇Xingjia 2＇ were used in the experiment, and the effect and dynamic change of Se contents in potato plant were followed to study Se contents in roots, stems and leaves in different growth periods and tuber yield was determined after spraying Se fertilizer in seedling stage. The results showed that Se contents of organs of potato sprayed with Se fertilizer were higher than those of the control. The dynamic change pattern of Se contents in different periods was not obvious in stem. The Se contents decreased gradually in roots, decreased as a single peak in leaves, and had a single valley in tuber. Compared with the control,yields of the three varieties increased by 11.39%, 7.61% and 9.67%, respectively. The results provide a valuable theoretical basis for the development of potato Se-enriched industry.