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。
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.
作者
谢晏芬
黄跃
赵宇婷
张艳艳
张国洪
方志鹏
王文波
徐德生
韩家宝
王娜
XIE Yanfen;HUANG Yue;ZHAO Yuting;ZHANG Yanyan;ZHANG Guohong;FANG Zhipeng;WANG Wenbo;XU Desheng;HAN Jiabao;WANG Na(Luliang Branch of Qujing Tobacco Company,Luliang 655699,Yunnan;College of Tobacco Science,Yunnan Agricultural University,Kunming 650201,Yunnan)
出处
《浙江农业科学》
2025年第11期2601-2606,共6页
Journal of Zhejiang Agricultural Sciences
基金
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)。
关键词
钾肥
钾素积累
土壤微生物
烟草
potassium fertilizer
potassium accumulation
soil microorganisms
tobacco
