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在盆栽条件下，研究了不同施肥水平对苞菜生物产量及养分含量的影响。结果表明，在０～０．６ｇ（Ｎ）／ｋｇ（土）范围内，随施Ｎ量的增加，苞菜生物产量逐渐增加，苞菜全Ｎ、全Ｋ含量随施Ｎ量的增加而增加。并提出了大田施氮参考用量为５２５ｋｇ／ｈｍ２。
Under potted condition, the effects of different fertilization levels on the biological yield and nutrient content of Brassica chinensis were studied. The results showed that in the range of 0-0.6 g (N) / kg (soil), the biomasses of Brassica chinensis increased with the increasing of N application rate, and the N and K contents of Brassica chinensis increased with the increase of N application rate . And put forward the reference amount of field nitrogen application 525kg / hm2.