摘要
为探究不同保水剂对植烟土壤细菌群落结构及对烤烟产量和质量的影响,通过大田试验,以不施保水剂为对照(CK),设置T1(90 kg/hm^(2)市售商用保水剂)、T2(90 kg/hm^(2)长效钾型保水剂)、T3[90 kg/hm^(2)自制羧甲基纤维素钠复合保水剂(AM/CMC)]和T4[90 kg/hm^(2)自制腐殖酸钾复合保水剂(AM/HAK)]共5个处理,考察不同保水剂对植烟土壤养分、含水率、细菌群落结构、优势菌相对丰度、主要菌门的相对丰度与土壤化学性质相关性及烤烟产量和质量的影响。结果表明,T4处理效果较好,在移栽后60 d时土壤含水率、有机质、碱解氮、有效磷、速效钾含量相较于CK分别提高了15.62%、19.73%、19.86%、5.08%和30.65%;较T1处理分别提高了13.81%、15.51%、14.32%、1.56%、24.07%,较T2处理分别提高了11.02%、10.85%、8.42%、0.72%、15.65%。T4处理后土壤细菌香农指数、ACE指数和Chao1指数较CK均有所提高,并且提高了变形菌门(Proteobacteria)和拟杆菌门(Bacteroidota)的相对丰度;主要菌门相对丰度与多数土壤因子存在显著相关关系。T4处理提高了烤后烟产量和质量。综上所述,施用AM/HAK可以改善土壤质量和细菌群落结构,提高烤烟产量和质量。
To investigate the effects of different water-retaining agents on the bacterial community structure of tobacco-planting soil,as well as on the yield and quality of flue-cured tobacco,a field experiment was conducted.With no water-retaining agent applied as the control(CK),five treatments were set up:T1(90 kg/ha commercial water retention agent),T2(90 kg/ha long-acting potassium-type water retention agent),T3[90 kg/ha self-made sodium carboxymethyl cellulose composite water retention agent(AM/CMC)],and T4[self-made potassium humate composite water retention agent(AM/HAK)water retention agent]to examine the effects of different water-retaining agents on the nutrients,moisture content,and bacterial community structure,relative abundance of dominant bacteria,correlation of relative abundance of major phyla and soil chemical properties,yield and quality of flue-cured tobacco.The results showed that the effect of T4 was better,and the contents of soil moisture,organic matter,alkali-hydrolyzed nitrogen,available phosphorus and available potassium were increased by 15.62%,19.73%,19.86%,5.08%and 30.65%,respectively,compared with CK 60 days after transplanting.Compared with T1 treatment,they increased 13.81%,15.51%,14.32%,1.56%,24.07%,and compared with T2 treatment,they increased 11.02%,10.85%,8.42%,0.72%,15.65%,respectively.After T4 treatment,soil bacterial Shannon index,ACE index and Chao1 index were increased relative abundance of compared to CK,and increased Proteobacteria and Chloroflexi;the relative abundance of the major bacterial phyla was significantly correlated with most of the soil factors.The application of AM/HAK improved the yield and quality of roasted tobacco.In conclusion,the application of AM/HAK can improve soil quality and bacterial community structure,and improve the yield and quality of flue-cured tobacco.
作者
严定伟
杨建新
郭杰
梁一凡
罗菲
付光明
李军正
常剑波
张玉林
姬小明
Yan Dingwei;Yang Jianxin;Guo Jie;Liang Yifan;Luo Fei;Fu Guangming;Li Junzheng;Chang Jianbo;Zhang Yulin;Ji Xiaoming(College of Tobacco,Henan Agricultural University,Zhengzhou 450046,Henan,China;Sanmenxia Tobacco Company of Henan Province,Sanmenxia 472000,Henan,China;Sanmenxia Company Lushi Branch of Henan Tobacco Company,Sanmenxia 472200,Henan,China)
出处
《作物杂志》
北大核心
2025年第4期197-205,共9页
Crops
基金
河南省烟草公司三门峡市公司项目(2022411200200004x)
国家级大学生创新创业项目(202210466046)。
关键词
保水剂
烤烟
土壤养分
细菌群落结构
产量
质量
Water-retaining agent
Flue-cured tobacco
Soil nutrients
Bacterial community structure
Yield
Quality
