Correlation Analysis between Well-cellar Early Transplanting of Robust Seedlings and Diseases in Shiyan Tobacco-growing Area  

作　　者：Dingjun WANG Aihua LI Liguang CHAI Dan LIU Yixia LIU Minggang LI Jingyang PENG 

机构地区：[1]Hubei Tobacco Company Shiya Company,Shiyan 442012,China [2]Shiyan Meteorological Bureau,Shiyan 442012,China

出　　处：《Plant Diseases and Pests》2024年第4期21-24,36,共5页植物病虫害研究（英文版）

基　　金：Supported by Research Program on Prevention and Control Technology of Tobacco Potato Virus Y Disease(SYK2023-06).

摘　　要：[Objectives]The paper was to investigate the relationship between the well-cellar early transplanting of robust seedlings and the prevalence of diseases in the Shiyan tobacco-growing area.[Methods]The relationship between disease occurrence and meteorological factors during the field growth period was examined by analyzing the prevalence of flue-cured tobacco virus diseases,brown spot,and total disease in the Shiyan tobacco-growing area before(2013-2017)and after(2018-2022)the well-cellar early transplanting of robust tobacco seedlings.[Results]The implementation of a well-cellar early transplanting technique of robust seedlings resulted in a reduction in the average incidence of tobacco virus disease,brown spot,and total disease by 0.83%,8.85%,and 7.91%,respectively,in comparison to the incidence observed prior to early transplanting.These findings suggest that early transplanting can significantly reduce the incidence of flue-cured tobacco diseases.Prior to the well-cellar early transplanting of robust tobacco seedlings,there was a significant(including highly significant)positive correlation between the incidence of brown spot and total disease and precipitation in August and September.The incidence of brown spot and total disease in tobacco plants was found to be significantly positively correlated with May precipitation and significantly negatively correlated with May sunshine hours following the well-cellar early transplanting of robust seedlings.The advancement of the transplanting period by 20 d resulted in a reduction in the growing period of tobacco plants in the field under autumn rains(late August to November)in western China.This effectively circumvented the suitable conditions for disease occurrence and can reduce the incidence of disease.[Conclusions]This study offers a framework for enhancing the quality and efficiency of flue-cured tobacco production in the northwest tobacco-growing area of Hubei.

关 键 词：Tobacco disease Well-cellar early transplanting of robust seedlings Meteorological factor Correlation analysis Shiyan tobacco-growing area 

分 类 号：S436.429[农业科学—农业昆虫与害虫防治]