CAJ | 학술논문

为了开发富硒烟叶生产技术和了解烟叶对硒的富集机理，采用水溶性Se(Ⅳ)（亚硒酸钠）和Se(Ⅵ)（硒酸钠）盆栽试验，探讨了烟株对硒的吸收和分配规律，以及不同价态和用量的硒对烟株生长发育的影响。结果表明，土壤施用适当浓度的两种价态硒（1~10 mg/kg）均有改善烟株形态性状和提高生物量的作用，高浓度硒（20~30 mg/kg）则有负面影响，且Se(Ⅵ)处理抑制效果大于 Se(Ⅳ)。相同浓度下，两种价态的硒均能有效提高烟株各部位硒含量，Se(Ⅵ)处理较 Se(Ⅳ)提高了3~30倍。土壤中的硒优先富集和分布于叶片中，其次是根系，茎秆最小。Monod方程拟合结果表明，Se(Ⅵ)处理烟株叶片、茎秆和根系最大硒含量分别是Se(Ⅳ)处理的1.83、15.81和20.98倍，烟株对Se(Ⅵ)的亲和能力显著大于Se(Ⅳ)，说明Se(Ⅵ)对烟株的生物有效性明显高于Se(Ⅳ)。
위료개발부서연협생산기술화료해연협대서적부집궤리，채용수용성Se(Ⅳ)（아서산납）화Se(Ⅵ)（서산납）분재시험，탐토료연주대서적흡수화분배규률，이급불동개태화용량적서대연주생장발육적영향。결과표명，토양시용괄당농도적량충개태서（1~10 mg/kg）균유개선연주형태성상화제고생물량적작용，고농도서（20~30 mg/kg）칙유부면영향，차Se(Ⅵ)처리억제효과대우 Se(Ⅳ)。상동농도하，량충개태적서균능유효제고연주각부위서함량，Se(Ⅵ)처리교 Se(Ⅳ)제고료3~30배。토양중적서우선부집화분포우협편중，기차시근계，경간최소。Monod방정의합결과표명，Se(Ⅵ)처리연주협편、경간화근계최대서함량분별시Se(Ⅳ)처리적1.83、15.81화20.98배，연주대Se(Ⅵ)적친화능력현저대우Se(Ⅳ)，설명Se(Ⅵ)대연주적생물유효성명현고우Se(Ⅳ)。
In order to explore the production technologies of Se-rich tobacco and the rich mechanism of Se on tobacco, a pot experiment was conducted to study the characteristics of applying selenite and selenate on the uptake and distribution of selenium in flue-cured tobacco, and their effects on tobacco growth. The results showed that the morphological characters and the biomass of tobacco could be improved if Se concentration was 1-10 mg/kg, but higher Se concentration (20-30 mg/kg) had negative effects. The Se content in different parts of tobacco plant remarkably increased by applying selenite and selenate, and this increase was 3 to 30 times more with selenate than with selenite in the same application rate. The order of distribution density and enrichment ability of Se in different parts was leaves>roots>stalks with the treatment of selenite and selenate. Monod model fitting results indicated that estimated maximal selenium contents of leaves, stalks and roots in selenate-added soils were 1.83, 15.81 and 20.98 times higher than in selenite-added soils. The bioavailability and affinity of selenate was higher than selenite for tobacco plants.