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为探明施硒(Se)对冬小麦产量及Se吸收转运的影响规律,采用盆栽试验,研究了北方石灰性潮土中5种施Se量对冬小麦产量、Se吸收及分布的影响。结果表明,随着施Se量的增加,冬小麦籽粒产量、成穗数和穗粒数均呈先增加后降低的趋势,其中,Se0.5、Se1处理的籽粒产量和各产量构成要素均高于Se0处理,最大值均出现在Se0.5处理。施Se显著增加了冬小麦各部位的Se含量、Se累积量以及植株总Se累积量;施Se增加了Se元素从颖壳向籽粒的迁移系数,降低了Se元素从地下部向地上部、茎叶向颖壳的迁移系数;施Se增加了Se在冬小麦籽粒中的占比,降低了Se在颖壳、茎叶中的占比。Se0.5、Se1较Se0处理,增加了冬小麦籽粒产量、籽粒Se含量、籽粒Se累积量及籽粒Se的占比。
In order to investigate the effect of Se on the yield and Se uptake and transportation of winter wheat, pot experiments were conducted to study the effects of five Se fertilizers on yield, Se uptake and distribution of winter wheat in calcareous soil. The results showed that the grain yield, the number of spikes and grains per spike of winter wheat increased first and then decreased with the increase of the amount of Se application. Among them, the grain yield and yield components of Se0.5 and Se1 treatments were all higher than those of Se0.5 and Se1 Se0 processing, the maximum value appears in Se0.5 processing. Se addition of Se significantly increased Se content, Se accumulation and total Se accumulation in all parts of winter wheat. Application of Se increased the migration coefficient of Se from glume shell to grain and decreased the Se content from underground to shooty, Shell migration coefficient; Se application of Se increased the proportion of Se in winter wheat grains, reducing the proportion of Se in the glume shell, stems and leaves. Se0.5, Se1 compared with Se0, increase the winter wheat grain yield, grain Se content, grain Se accumulation and grain Se proportion.