【摘要】 通过叶面喷硒研究了硒对生姜产量、各部位硒含量和累积分配及品质的影响,旨在探究生姜硒营养特性,为富硒生姜的生产提供依据。结果表明,外源施硒可显著提高生姜各部位硒含量,且对生姜的产量有显著影响。三叉期和膨大期喷施硒酸盐,生姜各部位硒含量分别是亚硒酸盐的5.5～8.2倍和2.8～4.1倍;喷施亚硒酸盐,姜皮硒含量均高于姜肉,喷施硒酸盐,姜肉硒含量高于姜皮。无论何时喷施何种硒源,硒在生姜中的有机转化率均可达到57%以上,膨大期喷硒,生姜有机硒比例高于三叉期。喷硒处理下,生姜Vc、还原糖和姜辣素含量均有提高,因此施硒对生姜品质有一定改善作用。更多还原

【Abstract】 In this study,the effects of selenium on the yield,selenium content,accumulation and distribution in different parts and quality of ginger were studied by spraying selenium on leaves.The aim of this study was to explore the nutritional characteristics of selenium in ginger and provide the basis for the application of Se-enriched ginger.The results showed that spraying selenium significantly increased the selenium content in different parts of ginger,and had a significant effect on the yield of ginger.Spraying selenate at trident stage and expansion stage made the selenium content in each part of ginger 5.5～8.2 times and 2.8～4.1 times higher than that of selenite respectively.When selenite was sprayed,the selenium content of ginger peel was higher than that of ginger pulp,when selenate was sprayed,the selenium content of ginger pulp was higher than that of ginger peel.Whenever and whichever the selenium was sprayed,the organic transformation rate of selenium in ginger could get over 57%.When selenium was sprayed at expansion stage the proportion of organic selenium in ginger was higher than that of spraying at trident stage.The contents of Vc,reducing sugar and gingerol of ginger were all increased after spraying selenium,therefore the application of selenium could improve the quality of ginger.更多还原