• ISSN 1008-505X
  • CN 11-3996/S
王韦燕, 常乃杰, 胡向丹, 朱经伟, 刘青丽, 李志宏, 郭亚利, 陈曦, 张恒, 艾栋, 王新修, 边立丽, 张云贵. 黔西南土壤养分与烤烟糖含量的关系[J]. 植物营养与肥料学报, 2021, 27(11): 2010-2018. DOI: 10.11674/zwyf.2021179
引用本文: 王韦燕, 常乃杰, 胡向丹, 朱经伟, 刘青丽, 李志宏, 郭亚利, 陈曦, 张恒, 艾栋, 王新修, 边立丽, 张云贵. 黔西南土壤养分与烤烟糖含量的关系[J]. 植物营养与肥料学报, 2021, 27(11): 2010-2018. DOI: 10.11674/zwyf.2021179
WANG Wei-yan, CHANG Nai-jie, HU Xiang-dan, ZHU Jing-wei, LIU Qing-li, LI Zhi-hong, GUO Ya-li, CHEN Xi, ZHANG Heng, AI Dong, WANG Xin-xiu, BIAN Li-li, ZHANG Yun-gui. Correlation of soil nutrients with total and reducing sugars of flue-cured tobacco in southwestern Guizhou, China[J]. Journal of Plant Nutrition and Fertilizers, 2021, 27(11): 2010-2018. DOI: 10.11674/zwyf.2021179
Citation: WANG Wei-yan, CHANG Nai-jie, HU Xiang-dan, ZHU Jing-wei, LIU Qing-li, LI Zhi-hong, GUO Ya-li, CHEN Xi, ZHANG Heng, AI Dong, WANG Xin-xiu, BIAN Li-li, ZHANG Yun-gui. Correlation of soil nutrients with total and reducing sugars of flue-cured tobacco in southwestern Guizhou, China[J]. Journal of Plant Nutrition and Fertilizers, 2021, 27(11): 2010-2018. DOI: 10.11674/zwyf.2021179

黔西南土壤养分与烤烟糖含量的关系

Correlation of soil nutrients with total and reducing sugars of flue-cured tobacco in southwestern Guizhou, China

  • 摘要:
    目的 黔西南烤烟还原糖(RS)和总糖(TS)含量过高是影响其品质的两个重要原因。我们研究了该地区土壤养分对烟叶总糖和还原糖的贡献,为通过施肥提高黔西南烟区的烤烟质量提供理论依据。
    方法 选取黔西南州晴隆、普安、兴仁、兴义、贞丰和安龙6个县(市)烟草种植集中连片区,确定典型烟田,采集土壤样品和对应的烤后烟叶样品,测定土壤大、中、微量养分含量以及烟叶总糖和还原糖含量,并对两者之间的关系进行相关分析、逐步回归分析和通径分析。
    结果 黔西南州烟叶的总糖和还原糖含量总体偏高;植烟区土壤酸碱性处于中性至弱碱性,土壤有机质、碱解氮、交换性钙、交换性镁、有效铁和有效锰含量丰富,速效钾、有效磷、有效铜、有效锌、有效硼和有效钼含量适宜,但存在空间分布不均问题。烟叶总糖和还原糖与土壤养分显著相关,其中,烟叶总糖与土壤速效钾(AK)、有效锌(Zn)和有效硼(B)呈极显著负相关,与土壤有效钼(Mo)呈极显著正相关;烟叶还原糖与土壤速效钾(AK)呈极显著负相关,与土壤有效锌(Zn)和有效硼(B)呈显著负相关,与有效铜(Cu)呈极显著正相关,与有效锰(Mn)呈显著正相关。烟叶总糖和还原糖与土壤养分的回归方程分别为TS=31.69−1.78Zn+17.05Mo+1.09Cu+0.003Mg−0.01AK和RS=25.12−0.01AK+1.39Cu+6.91Mo。土壤速效钾、有效铜、有效锌、有效钼和交换性镁为影响烟叶总糖含量的重要指标,土壤速效钾、有效铜和有效钼是影响烟叶还原糖含量的重要指标。通径分析表明,土壤养分含量对烟叶糖含量既有正面(促进)也有负面(制约)作用。
    结论 对黔西南州烟叶糖含量贡献较大的土壤养分是速效钾、有效镁、有效铜、有效锌和有效钼。在速效钾和有效锌相对丰富的情况下,土壤速效钾含量和有效锌含量会抑制烤后烟叶总糖、还原糖含量的积累,而有效镁、有效铜和有效钼会增加烤后烟叶的总糖和还原糖含量。

     

    Abstract:
    Objectives High reducing sugar (RS) and total sugar (TS) contents are two important factors that reduce the quality of tobacco leaves in southeastern Guizhou. Here, we studied the contribution of soil nutrient contents to the accumulation of total and reducing sugars in tobacco leaves to provide a theoretical base for improving tobacco quality through fertilization.
    Methods Soil and tobacco leaf samples were collected from tobacco fields in Qinglong, Puan, Xingren, Xingyi, Zhenfeng, and Anlong of Guizhou Province to measure soil available nutrient and the total and reducing sugar contents in tobacco leaves. Stepwise regression and path analysis were used to estimate the relationship between soil available nutrients and sugar contents in tobacco leaves.
    Results The total and reducing sugar contents of tobacco leaves were 18%–24% and 16%–22%. The pH of the tobacco-growing soils ranged from neutral to weakly alkaline, the soil organic matter, available N, Ca, Mg, Fe, and Mn were abundant, the K, P, Cu, Zn, B, and Mo were adequate, despite uneven spatial distribution. Soil nutrients (P < 0.05) correlated with the contents of TS and RS in tobacco leaves. The leaf TS was negatively correlated with soil K, Zn, and B, and positively correlated with Mo. There was a (P<0.05) negative correlation between RS and soil K, Zn, B. The regression equations of TS and RS with soil available nutrients were TS=31.69−1.78Zn+17.05Mo+1.09Cu+0.003Mg−0.01AK, and RS=25.12−0.01AK+1.39Cu+6.91Mo. Soil K, Cu, and Mo were important indexes affecting reducing sugars in tobacco leaves. Path analysis also showed that soil nutrients indirectly affect tobacco sugar contents positively (promoting) or negatively (restricting).
    Conclusions The soil nutrients with higher contribution to the sugar content of tobacco in southwest Guizhou are soil available K, Mg, Cu, Zn, and Mo. High soil available K and Zn contents would inhibit total and reducing sugars accumulation in tobacco leaves after curing. Conversely, available Mg, Cu and Mo have the potential to increase total and reducing sugars in tobacco leaves.

     

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