不同形态镁肥对江西烟区烤烟质量的影响

摘要

江西烟叶特别是下部叶,存在叶色偏淡、身份偏薄、单叶重偏低等问题,究其原因可能与植烟土壤缺镁有关.通过田间试验,研究了不同形态镁肥对烤烟生长发育、产量和品质的影响.结果表明,施用硝酸镁和氧化镁较硫酸镁、碳酸镁能促进烟株生长,提高叶片单叶面积、单叶重、上等烟比例及冲上等烟比例,其中以氧化镁处理表现最好,烟叶内在质量最佳.%In Jiangxi province tobacco leaves, especially lower leaves, have some problems, such as pale leaf color, thin leaves and low single leaf weight, which may result from soil magnesium deficiency. Field experiments were carried out to investigate the effect of different magnesium forms on tobacco growth, yield and quality in Jiangxi Province. Four different forms of magnesium [MgSO4, Mg(NO3)2, MgCO3, MgO] were used in the study. The results showed that compared with MgSO4 and MgCO3, Mg(NO3)2 and MgO could promoted the tobacco growth, enhance leaf area, leaf weight and the proportion of high quality leaves. In all these treatments, magnesium oxide had the best effect and the tobacco quality was also improved.