为揭示施用不同促根剂对烤烟生长发育和品质的影响机制,以常规不施用促根剂为对照(CK),设置了施用益微元有机水溶肥料(T1)、矿源黄腐酸钾(T2)、炭吸附聚谷氨酸(T3)和福根多促根剂(T4)对烟株根系生长发育及上部烟叶产量及质量的影响试验.结果表明,与CK相比,施用促根剂处理的烟株第一、二和三模块根系体积分别增加75.2%～120.5%、50.4%～75.0%和50.2%～96.5%;第一和二模块根系活力也明显增加;T1、T2和T3处理的上部叶叶绿素相对含量(SPAD)值提高,成熟期上部叶SPAD值日平均变化速率降低;施用促根剂的处理烤后上部烟叶总糖含量提高,T2和T3处理的烟叶烟碱含量显著降低;施用促根剂处理的烟叶产量、产值和净增收益分别提高3.7%～7.2%、6.8%～10.6%和1 644.0～4 558.5元/hm2,其中T3处理增幅最大.因此,在重庆烟区施用炭吸附聚谷氨酸促根剂可促进烟株根系发育,提高根系活力,改善上部叶耐熟性,提高烟叶品质.
In order to study the influence and mechanism of applying different root-promoting agents on the growth,development and quality of tobacco plants,experiments were conducted to analyze the effects of applying Yiweiyuan organic water-soluble fertilizer(T1),mineral potassium fulvic acid(T2),carbon adsorption polyglutamate(T3)and Fugenduo root-promoting agents(T4)on the growth and development of tobacco roots and the yield and quality of upper leaves,with no root-promoting agent treatment as the control(CK).The results showed that compared with CK,the application of the root-promoting agents increased the root volume of primary,secondary and tertiary modules of tobacco plants by 75.2%-120.5%,50.4%-75.0% and 50.2%-96.5%,respectively.The root vigor of primary and secondary modules also increased significantly.The SPAD values of upper leaves under T1,T2,and T3 treatments increased,and the average daily rate of change of SPAD for upper leaves during the maturing stage decreased.Application of the root-promoting agents increased the total sugar content of tobacco upper leaves.T2 and T3 treatments significantly decreased the nicotine content of tobacco leaves.The application of the root-promoting agents increased the yield,production value and net income of cured upper tobacco leaves by 3.7%-7.2%,6.8%-10.6% and 1 644-4 558.5 RMB Yuan/ha,respectively.Among them,T3 treatment had the largest growth rate.Therefore,the application of carbon adsorption polyglutamate as a root-promoting agent can improve the development and vigor of root,ripening holding ability of upper leaves and quality of tobacco leaves.
华仲臣;李学芹;张振;肖庆礼;张帅;王静;符云鹏;姚鹏伟
河南农业大学烟草学院 国家烟草栽培生理生化研究基地 烟草行业烟草栽培重点实验室,郑州市郑东新区平安大道218号 450046广东深圳烟草工业有限责任公司,广东省深圳市龙华区清宁路2号 518110重庆中烟工业有限责任公司,重庆市南岸区南坪东路2号 400060重庆市烟草公司酉阳分公司,重庆市酉阳县桃花源街道桃花源大道中路87号 409800
农业科学
重庆烟区;烤烟;促根剂;根系;上部叶;耐熟性
Chongqing tobacco growing area;Flue-cured tobacco;Root-promoting agent;Root;Upper leaf;Ripening holding ability
《烟草科技》 2024 (004)
61-67 / 7
重庆中烟工业有限责任公司项目"重庆烟叶基地高可用性上部烟叶开发与应用"(YL202202);河南省科技攻关项目"添加有机物料对豫中农田土壤剖面温室气体周转规律的影响"(222102320440).
10.16135/j.issn1002-0861.2023.0434
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