摘要
为明确水溶性追肥和促根剂配施对烤烟早生快发的作用,以云烟87为材料,采用双因素试验,设计矿源腐殖质、恶霉·稻瘟灵乳油和壳聚糖3种促根剂,水溶性追肥、传统追肥2种追肥模式,对烤烟根系指标、农艺性状和烟叶叶绿素相对(SPAD)值进行测定,并采用pEta2值(Partialη2)大小对追肥模式、促根剂及其互作对烤烟生长的影响进行评价。结果表明,水溶性追肥模式较传统追肥模式有利于促进烤烟根系和地上部生长;施用促根剂可促进烤烟根系和地上部生长,有利于提高烟叶SPAD值,以施用矿源腐殖质和恶霉·稻瘟灵乳油的效果较好。其中,追肥模式、促根剂及其互作对烤烟根系生长的贡献率分别为27.64%、39.24%、33.12%,对烤烟地上部生长的贡献率分别为17.85%、56.79%、25.36%,对烟叶SPAD值的贡献率分别为14.49%、51.40%、34.11%,可见促根剂对烤烟生长的影响最大,其次是互作,再次为追肥模式。综上,采用水溶性追肥模式配施矿源腐殖质或恶霉·稻瘟灵乳油可促进烤烟生长。本研究结果为湖南稻茬烤烟的优质适产提供了技术参考。
To clarify effect of water-soluble topdressing and root-promoting agents on the growth of flue-cured tobacco,a double-factor experiment was conducted to investigate the effects of three kinds of root-promoting agents including mineral humic substances,hymexazol-isoprothiolane,and chitosan,and two kinds of fertilization modes including water-soluble topdressing and traditional topdressing,and their interactions on the growth of tobacco roots,agronomic characters and SPAD values by using Yunyan 87 as material.The effect of fertilization modes,root-promoting agents and their interaction on the growth of flue-cured tobacco was evaluated by the value of pEta2(Partialη2).The results showed that water-soluble topdressing mode was better than the traditional topdressing mode in promoting the growth of tobacco roots and above-ground.The application of root-promoting agents can promote the growth of tobacco roots and above-ground parts,and improve the SPAD value of tobacco leaves,particularly the application of mineral humic substances and hymexazol-isoprothiolane.The contribution of fertilization modes,root-promoting agents,and their interactions to the tobacco root growth were 27.64%,39.24%and 33.12%,respectively,and that of the above-ground parts of tobacco were 17.85%,56.79%and 25.36%,respectively,and contribution of the SPAD value of tobacco leaves were 14.49%,51.40%and 34.11%,respectively.It shows that root-promoting agents had the most significant effect on tobacco growth,followed by their interactions and fertilization modes.Therefore,using water-soluble topdressing mode combined with mineral humic substances or hymexazol-isoprothiolane can promote the growth of flue-cured tobacco.This study provides a theoretical basis for high quality and suitable yield of tobacco production in Hunan paddy-tobacco fields.
作者
张阳
王新月
谢会雅
蔡奇
陈舜尧
王旋
黄琼慧
邓小华
ZHANG Yang;WANG Xinyue;XIE Huiya;CAI Qi;CHEN Shunyao;WANG Xuan;HUANG Qionghui;DENG Xiaohua(Zhuzhou Branch of Hunan Tobacco Province Company,Zhuzhou,Hunan 412400;College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128)
出处
《核农学报》
CAS
CSCD
北大核心
2023年第5期1030-1039,共10页
Journal of Nuclear Agricultural Sciences
基金
湖南省烟草公司株洲市公司科技项目(20-001)
湖南省烟草公司科技项目(19-22Aa03)。
关键词
促根剂
水溶性肥料
烤烟
根系生长
地上部生长
root-promoting agents
water-soluble topdressing
flue-cured tobacco
root growth
above-ground part growth
