江苏农业学报2025，Vol.41Issue(8)：1526-1537,12.DOI:10.3969/j.issn.1000-4440.2025.08.009
有机氮等量替代无机氮对广元烟区植烟土壤微生物群落和烤烟品质的影响
Effects of equal-nitrogen replacement of inorganic nitrogen with organic nitrogen on soil microbial communities and flue-cured tobacco quality in Guangyuan tobacco-growing area
摘要
Abstract
To investigate the effects of replacing inorganic nitrogen with an equivalent amount of organic nitrogen on to-bacco growth and soil environment in the Guangyuan tobacco-growing area,a field experiment was conducted using Yunyan 87 as the test material.Five treatments were set up,namely:100%inorganic nitrogen(CK),15%organic nitrogen replacing inorganic nitrogen at an equal nitrogen rate(T1),30%organic nitrogen replacing inorganic nitrogen at an equal nitrogen rate(T2),45%organic nitrogen replacing inorganic nitrogen at an equal nitrogen rate(T3),and 60%organic nitrogen replacing inorganic nitrogen at an equal nitrogen rate(T4).The organ-ic nitrogen fertilizer used was decomposed rapeseed cake,and the total nitrogen application rate in each treatment was 97.5 kg/hm2.The results showed that partial replacement of inorganic nitrogen with an equivalent amount of organic nitro-gen could effectively improve the soil environment.Among them,the contents of soil total nitrogen,available phosphorus,availa-ble potassium,organic matter,and alkali-hydrolyzable nitrogen,as well as the activities of sucrase,urease,catalase,polyphenol oxidase,alkaline phosphatase,and neutral phosphatase in the T2 treatment were significantly higher than those in CK(P<0.05).Meanwhile,the T2 treatment optimized the soil microbial community structure,increasing the relative abundance of Gibberella and decreasing the relative abundance of Fusarium.In terms of production,the T2 treatment increased the output value of flue-cured tobacco and the proportion of medium and high-grade tobacco,and obtained the highest sensory evaluation score.There-fore,replacing 30%of inorganic nitrogen with organic nitrogen at an equal nitrogen rate is the most suitable fertilization method for the Guangyuan tobacco-growing area and has significant value for widespread application.关键词
烟草/有机氮/无机氮/土壤微生物/酶活性/烤烟品质Key words
tobacco/organic nitrogen/inorganic nitrogen/soil microorganisms/enzyme activity/flue-cured to-bacco quality分类
农业科技引用本文复制引用
徐亚绅,尹振华,肖旭,胡继涛,王小东,王栋..有机氮等量替代无机氮对广元烟区植烟土壤微生物群落和烤烟品质的影响[J].江苏农业学报,2025,41(8):1526-1537,12.基金项目
中国烟草总公司四川省公司科技计划项目(SCYC202211) （SCYC202211）
