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采用土培试验，对硼效率不同的甘蓝型油菜进行两步筛选。（１）苗期筛选：选择１３０个甘蓝型油菜品种，在缺硼和硼正常处理条件下，根据苗期地上部干物重比（－Ｂ／＋Ｂ）作为硼效率系数，来反映不同品种硼效率差异，初步判断有硼高效品种２２个，硼低效品种２个，硼中效品种１０６个；（２）产量筛选：以Ｂ２（土壤有效硼０．２５ｍｇ／ｋｇ），Ｂ３（土壤有效硼１．０ｍｇ／ｋｇ）水平下油菜种子产量比（Ｂ２／Ｂ３）来反映不同品种利用硼效率的差异。获得硼高效品种７个，硼低效品种１个。同时苗期筛选后选取的９个品种经过产量筛选验证，有８个品种与油菜种子产量筛选一致，苗期筛选选取准确率接近９０％，证明两步筛选法（苗期筛选，产量筛选）在选择硼效率不同的甘蓝型油菜品种有较好的可靠性。
Soil test was used to screen two-step Brassica napus with different boron efficiency. (1) Seedling selection: Select 130 varieties of Brassica napus under boron deficiency and boron normal conditions, according to the shoot dry weight ratio (-B / + B) as a boron efficiency coefficient to reflect the different varieties of boron efficiency The results showed that there were 22 highly efficient boron species, 2 low boron inefficient species and 106 moderately effective boron species. (2) Yield screening: B2 (available boron 0.25mg / kg), B3 .0mg / kg) rapeseed seed yield ratio (B2 / B3) to reflect the different varieties of boron use efficiency differences. Seven boron-efficient varieties and one boron-inefficient variety were obtained. At the same time, nine varieties selected after seedling stage selection were verified by yield screening. Eight varieties were consistent with the rape seed yield screening, and the accuracy rate of seedling selection was nearly 90%. The two-step selection method (seedling selection and yield selection) Select boron efficiency of different varieties of Brassica napus has good reliability.