核农学报2017，Vol.31Issue(10)：2072-2079,8.DOI:10.11869/j.issn.100-8551.2017.10.2072
硒对烤烟生长、化学指标及矿质营养元素含量的影响
Effects of Selenium on Growth, Chemical Index and Mineral Nutrition Contents of Flue-cured Tobacco
摘要
Abstract
In order to explore effect of different concentrations of selenium (Se) on plant growth,chemical index and mineral nutrients,the growth,chemical index and contents of mineral nutrition (N,P,K,Ca,Mg,Mn,Zn,and Cu) in roots,stems and leaves were determined in Yunyan 87 by pot culture.The results showed that the contents of mineral nutrition (N,P,K,Ca,Mg,Mn,Zn,Cu) in roots,stems and leaves of flue-cured tobacco reached the maximum value at 4.4 mg· kg-1 of Se treatment,and the contents of Nicotine,reducing sugar and protein in leaves of flue-cured tobacco were within the optimum range.Selenium at low levels (Se≤4.4 mg·kg-1) stimulated the growth of flue-cured tobacco by enhancing the uptake of mineral nutrition,especially for N,K,Ca,Mg and Mn,and ultimately promoted the growth of flue-cured tobacco as well as the chemical composition was more harmonious.However,high Se levels (Se ≥ 11.1 mg· kg-1) depressed the absorption of mineral nutrition,especially for N,P and K,and ultimately inhibited the growth of flue-cured tobacco.Therefore,different Se concentration in soil affected the growth and chemical index of flue-cured tobacco by regulating the absorption of mineral elements in plants.This research provides a theoretical basis for the guidance of Se-rich agricultural production.关键词
硒/烤烟/生长/化学指标/矿质营养元素Key words
selenium/flue cured tobacco/growth/chemical index/mineral nutrient element引用本文复制引用
韩丹,熊双莲,许自成,涂书新,邵惠芳,黄五星,郝三辉..硒对烤烟生长、化学指标及矿质营养元素含量的影响[J].核农学报,2017,31(10):2072-2079,8.基金项目
中国烟草总公司河南省公司重点科技攻关项目(HYKJ 201405),农业部公益性行业科研专项(201303106) （HYKJ 201405）
