浙江农业科学 ›› 2025, Vol. 66 ›› Issue (11): 2601-2606.DOI: 10.16178/j.issn.0528-9017.20240061

• 经济作物 • 上一篇    下一篇

钾肥施用量对烟株钾素积累及土壤微生物群落的影响

谢晏芬1(), 黄跃2, 赵宇婷1, 张艳艳1, 张国洪1, 方志鹏1, 王文波1, 徐德生1, 韩家宝1,*(), 王娜2,*()   

  1. 1 曲靖市烟草公司陆良分公司, 云南 陆良 655699
    2 云南农业大学 烟草学院, 云南 昆明 650201
  • 收稿日期:2024-01-18 出版日期:2025-11-11 发布日期:2025-12-01
  • 通讯作者: 王娜(1979—),女,云南楚雄人,副教授,主要从事烟草栽培与土壤微生态环境研究,E-mail:cindy_0725@126.com;
    韩家宝(1973—),男,云南曲靖人,高级农艺师,主要从事烟草生产技术与管理工作,E-mail:493000270@qq.com
  • 作者简介:谢晏芬(1981—),女,云南陆良人,初级农艺师,主要从事烟草生理生化研究,E-mail:zyt94817@163.com
  • 基金资助:
    中国烟草总公司云南省公司科技计划项目(2021530000242005);云南省农业基础联合专项项目(202301BD070001-054)

Effects of potassium fertilizer application rate on potassium accumulation in tobacco plants and soil microbial community

XIE Yanfen1(), HUANG Yue2, ZHAO Yuting1, ZHANG Yanyan1, ZHANG Guohong1, FANG Zhipeng1, WANG Wenbo1, XU Desheng1, HAN Jiabao1,*(), WANG Na2,*()   

  1. 1 Luliang Branch of Qujing Tobacco Company, Luliang 655699, Yunnan
    2 College of Tobacco Science, Yunnan Agricultural University, Kunming 650201, Yunnan
  • Received:2024-01-18 Online:2025-11-11 Published:2025-12-01

摘要:

为探究钾肥施用量对烟株钾素积累及土壤微生物群落的影响,在云南省曲靖市开展试验,研究不同钾肥施用量处理下,烟株钾素积累量、土壤养分及酶活性的响应变化特征,并对其与土壤微生物群落结构的互作关系进行探讨。结果表明,钾肥施用量会影响土壤养分含量与烟株钾素积累量,引起土壤微生物群落发生改变。N2处理(施用纯钾总量421.5 kg·hm-2)的烟叶中钾素积累量最高,显著(p<0.05)高于N3处理(施用纯钾总量538.5 kg·hm-2)。N2处理富集了芽单胞菌属(Gemmatimonas)、不动杆菌属(Acinetobacter)、芽孢杆菌属(Bacillus)、硝化螺旋菌属(Nitrospira)、假单胞菌属(Pseudomonas)等解钾菌属,使土壤中的可溶性钾含量升高,进而提高烟叶的钾素积累量。研究结果为云南烟区土壤养分的科学管理和有效提升烟叶钾含量提供了理论依据。

关键词: 钾肥, 钾素积累, 土壤微生物, 烟草

Abstract:

To investigate the effects of potassium fertilizer application rate on potassium accumulation in tobacco plants and soil microbial communities, a field experiment was conducted in Qujing City, Yunnan Province. The study examined the response characteristics of potassium accumulation in tobacco plants, soil nutrients, and enzyme activities under different potassium fertilizer application rates, and explored their interactions with the structure of the soil microbial community. The results showed that the potassium fertilizer application rate affected soil nutrient content and potassium accumulation in tobacco plants, leading to changes in the soil microbial community. N2 treatment(total pure potassium application of 421.5 kg·hm-2) resulted in the highest potassium accumulation in tobacco leaves, which was significantly (p<0.05) higher than that of the N3 treatment (total pure potassium application of 538.5 kg·hm-2). N2 treatment enriched potassium-releasing bacterial genera such as Gemmatimonas, Acinetobacter, Bacillus, Nitrospira, and Pseudomonas, which increased the soluble potassium content in the soil and thereby enhanced potassium accumulation in tobacco leaves. This study provides a theoretical basis for the scientific management of soil nutrients and the effective improvement of potassium content in tobacco leaves in Yunnan tobacco-growing areas.

Key words: potassium fertilizer, potassium accumulation, soil microorganisms, tobacco

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