Acta Tabacaria Sinica

2018 Vol. 24 No. 4 Published: 28 August 2018

YU Qichang, HUANG Fei, YI Conghua, KONG Haohui, ZHOU Rong, JI Weini

Removing lignin from tobacco stems with glycerin alkali method

2018 Vol. 24 (4): 1-6 [Abstract] ( 51 ) HTML (0 KB) PDF (1554 KB) ( 94 ) | Cite this article

QIN Shiqi, ZHOU Yuanzhen, Liu Ze, LI Ping, ZHANG Bo, LIN Ting

Identification of causes of staining in cigarette by FAIMS

2018 Vol. 24 (4): 7-15 [Abstract] ( 37 ) HTML (0 KB) PDF (3651 KB) ( 30 ) | Cite this article

HUANG Miao, YANG Jingguo, JI Houwei, HUI Feiqiong, WANG Fang, PANG Hongrui, HUANG Xijuan, LIU Jian

Determination of four water-soluble sugars in tobacco by dispersive solid-phase extraction coupled with ultra high performance liquid chromatography

2018 Vol. 24 (4): 16-19 [Abstract] ( 28 ) HTML (0 KB) PDF (1098 KB) ( 53 ) | Cite this article

CHEN Qian, LI Ke, JIN Yong, YU Saibo, FAN Hongmei, WANG Shitai, TAN Haifeng, TAN Chao, LIU Qi

Comparison of cigarettes made of reconstituted tobacco granules with conventional cigarettes

2018 Vol. 24 (4): 20-26 [Abstract] ( 23 ) HTML (0 KB) PDF (1788 KB) ( 56 ) | Cite this article

ZHANG Lina, XU Liping, FAN Hu, ZHENG Huali, XU Qingquan, XU Shiqiang, GAO Yang

A high-precision automatic and multipurpose laboratory device for tobacco casing, flavoring and drying

2018 Vol. 24 (4): 27-34 [Abstract] ( 34 ) HTML (0 KB) PDF (1684 KB) ( 35 ) | Cite this article

FU Liang, YI Bin, LU Jie, XIONG Kaisheng, MA Ning, LIN Wenqiang, GAO Xiaohua, WEN Yadong, LI Wenqi, ZHENG Hongyan

Development and application of laboratory vacuum pre-conditioner

2018 Vol. 24 (4): 35-39 [Abstract] ( 36 ) HTML (0 KB) PDF (1133 KB) ( 27 ) | Cite this article

WANG Rengang, LU Xinli, GOU Zhenggui, ZUO Yehua, ZHAO Zhonghui, ZENG Jifan, LEI Ting, LIU Jie, GUO Guangdong, ZHANG Jishun, ZHU Guichuan, YANG Xiuxiang, REN Xueliang

Breeding and characteristics of new flue-cured tobacco variety Guiyan2

2018 Vol. 24 (4): 40-47 [Abstract] ( 32 ) HTML (0 KB) PDF (927 KB) ( 85 ) | Cite this article

XU Tongqing, XU Yimin, ZHANG Ye, WANG Chengdong, LIU Guangliang, WANG Shusheng, DONG Jianxin, TAO Jian

Applicability validation of MODIS productivity simulation model based on flux data in typical Pan-xi tobacco planting area

2018 Vol. 24 (4): 48-54 [Abstract] ( 16 ) HTML (0 KB) PDF (1015 KB) ( 20 ) | Cite this article

SUN Yang, LI Qingshan, TAN Xiaolei, REN Jie, MA Xinghua, WANG Chuanyi, LIU Yaxian, XU Xiuhong

Relationships between hyperspectral characteristics and color parameters of fresh tobacco leaves

2018 Vol. 24 (4): 55-64 [Abstract] ( 32 ) HTML (0 KB) PDF (2122 KB) ( 35 ) | Cite this article

MU Qing, LIU Jinhua, HUANG Depu, CHEN Liping

Research and application of “6+6S” integrated tobacco leaf harvesting-curing service mode

2018 Vol. 24 (4): 65-71 [Abstract] ( 28 ) HTML (0 KB) PDF (1050 KB) ( 45 ) | Cite this article

MAO Zongyuan

Design and application of mobile phone APP for tobacco field technicians

2018 Vol. 24 (4): 72-78 [Abstract] ( 37 ) HTML (0 KB) PDF (2074 KB) ( 45 ) | Cite this article

ZHOU Xin, LIANG Hongwei, ZHAO Yanqing, JING Zhe, RAO Yuan

Design and implementation of ITIL-based integrated IT service and management platform

2018 Vol. 24 (4): 79-85 [Abstract] ( 27 ) HTML (0 KB) PDF (1781 KB) ( 16 ) | Cite this article

MENG Bo, PANG Lei

Preliminary study on management of cigarette logistics equipment in tobacco commercial enterprise

2018 Vol. 24 (4): 86-90 [Abstract] ( 39 ) HTML (0 KB) PDF (934 KB) ( 19 ) | Cite this article

LIU Yali, WANG Jinbang, ZHENG Xinzhang, QIU Jiqing, HONG Qunye, GONG Jinlong, ZHENG Lu

Current status and prospect of heat-not-burn tobacco products

2018 Vol. 24 (4): 91-106 [Abstract] ( 128 ) HTML (0 KB) PDF (1628 KB) ( 207 ) | Cite this article

LIU Guoshun, LI Pengyan, DING Songshuang, REN Tianbao

Brief description of Internet of Things and its prospective application to tobacco agriculture

2018 Vol. 24 (4): 107-114 [Abstract] ( 32 ) HTML (0 KB) PDF (891 KB) ( 55 ) | Cite this article

XIAO Jinzhe, ZHANG Tengjian, YANG Quanzhong, WANG Fang, CHEN Liangyuan, XU Dayong, LU Minrui

Design of in-line screening threshing recycle in green leaf threshing and redrying line

2018 Vol. 24 (4): 115-123 [Abstract] ( 17 ) HTML (0 KB) PDF (1222 KB) ( 41 ) | Cite this article

SHEN Dingyang, HUANG Xiaohua, GUO Hui, ZHANG Chi, REN Guanfeng

Optimization of control circuits for reducing energy consumption of dust removal system in cigarette factories

2018 Vol. 24 (4): 124-128 [Abstract] ( 27 ) HTML (0 KB) PDF (1259 KB) ( 26 ) | Cite this article

Ren Xiaofen, QI Wenzhe, CHENG Xingkai, LIU Zhengjun, JI Xiaoxue, QIAO Kang

The control efficacy of fluopicolide·propamocarb hydrochloride to tobacco black shank and its effects on tobacco growth

2018 Vol. 24 (4): 129-134 [Abstract] ( 37 ) HTML (0 KB) PDF (2022 KB) ( 36 ) | Cite this article

2018 Vol. 24 No. 4 Published: 28 August 2018

YU Qichang, HUANG Fei, YI Conghua, KONG Haohui, ZHOU Rong, JI Weini

Removing lignin from tobacco stems with glycerin alkali method

2018 Vol. 24 (4): 1-6 [Abstract] ( 51 ) HTML (0 KB) PDF (1554 KB) ( 94 ) | Cite this article

Abstract：In order to prepare tobacco stem sheets with low lignin content, technological condition for processing tobacco stems with glycerin alkali method was optimized。The effect of different pretreatment processes on smoke quality of reconstituted tobacco was compared. Results show that:(1) The optimum process conditions were as follows:potassium hydroxide dosage was 45%, cooking temperature was 200℃, liquid-solid ratio was 11:1, and cooking time was 0.5h. Under these conditions, the lignin content in tobacco stems was 5.06%, the removal rate of lignin was 43.01%, the yield of pulp was 37.12%. (2) The lignin removal rate and reduction effect of lignin flavor by glycerin alkali method were slightly inferior to those by oxygen alkali method, but glycerin alkali method was better than oxygen alkali method and acetic acid method in improving smoke quality.(3)Sensory quality of the target cigarettes made with reconstituted tobacco by glycerin alkali method was better than that of routine cigarettes. It can be concluded that the reconstituted tobacco prepared by glycerine process had low lignin content and could be used to improve smoke quality of cigarette.

QIN Shiqi, ZHOU Yuanzhen, Liu Ze, LI Ping, ZHANG Bo, LIN Ting

Identification of causes of staining in cigarette by FAIMS

2018 Vol. 24 (4): 7-15 [Abstract] ( 37 ) HTML (0 KB) PDF (3651 KB) ( 30 ) | Cite this article

Abstract：Characteristics of volatile substances were detected by FAIMS and the mobility of different ions changed nonlinearly under high electric field intensity (> 15000 V/cm), which separated ionic groups of suspect flavor contaminants in staining in cigarette from each other. Characteristic three-dimensional scanning map of the substance was obtained. Image similarity calculation software, i.e. Visual Similarity Duplicate Image Finder, showed similarities of three-dimensional scan map, which would identify causes of flavor stains on surface of cigarette. The same method could be used to identify sugar stains in cigarettes after processing. Results showed that:1)The similarities of test maps of artificially sorted flavor stains cigarette and man-made pollutants stains were more than 95%. 2)The similarities of test maps of artificially sorted sugar stains cigarette and man-made pollutants stains were about 95%. It was demonstrated that FAIMS could be used to identify pollutant causes of staining in cigarette.

HUANG Miao, YANG Jingguo, JI Houwei, HUI Feiqiong, WANG Fang, PANG Hongrui, HUANG Xijuan, LIU Jian

Determination of four water-soluble sugars in tobacco by dispersive solid-phase extraction coupled with ultra high performance liquid chromatography

2018 Vol. 24 (4): 16-19 [Abstract] ( 28 ) HTML (0 KB) PDF (1098 KB) ( 53 ) | Cite this article

Abstract：An ultra high performance liquid chromatography (UPLC) method coupled with evaporative light scattering detector (ELSD) and dispersive solid-phase extraction (DSPE) was successfully developed. Using this method, the contents of four water-soluble sugars (fructose, glucose, sucrose, maltose) in tobacco were rapidly determined within 10 min. Results show that the method is rapid, simple and sensitive for the determination of water-soluble sugar content in tobacco.

CHEN Qian, LI Ke, JIN Yong, YU Saibo, FAN Hongmei, WANG Shitai, TAN Haifeng, TAN Chao, LIU Qi

Comparison of cigarettes made of reconstituted tobacco granules with conventional cigarettes

2018 Vol. 24 (4): 20-26 [Abstract] ( 23 ) HTML (0 KB) PDF (1788 KB) ( 56 ) | Cite this article

Abstract：In order to improve quality consistency of cigarettes, special cigarette was prepared by using reconstituted tobacco granules as fillers. Comparison of this cigarette with conventional cigarettes was carried out by studying sensory value, combustibility, physical indexes, chemical components and routine smoke indexes. Results showed that:1) Compared with conventional cigarette, the static burning speed of reconstituted granule cigarette was increased by 6%, the ash integration value was reduced by more than 80%, the burning line was straighter and the color of ash was whiter. 2) The average value of cigarette weight, draw resistance, total sugar, total nicotine, tar and nicotine deliveries of reconstituted granule cigarette were similar to those of normal cigarette, but the standard deviations of these indexes were significantly reduced. 3) At same tar level, CO delivery of reconstituted granules cigarette was reduced by about 5 mg/cig and CO/tar ratio was decreased to about 0.55.

ZHANG Lina, XU Liping, FAN Hu, ZHENG Huali, XU Qingquan, XU Shiqiang, GAO Yang

A high-precision automatic and multipurpose laboratory device for tobacco casing, flavoring and drying

2018 Vol. 24 (4): 27-34 [Abstract] ( 34 ) HTML (0 KB) PDF (1684 KB) ( 35 ) | Cite this article

Abstract：During cigarette development process, manual flavoring is still a dominant method in making cut tobacco samples at laboratory, and low flavoring precision, low spraying casing uniformity and uncontrollable moisture precision are normally encountered. To overcome these shortages and narrow the quality gap between test samples and industry samples, a high-precision automatic integrated micro equipment for cut tobacco flavoring and drying was developed, which can realize the function of automatically cut tobacco casing, flavoring and drying. The application results showed that the material allocating accuracy of the equipment was consistent with that of the industry. The similarity between material allocating and flavoring between micro equipment and industry was 99.11% and 98.26%, respectively; The uniformity of flavoring by micro equipment was 98.79%. The sensory quality difference between equipment samples and production sample was 0.5, which is significantly better than the manual one. This indicates the proposed equipment can simulate mass production process, which is conducive to improvement of cigarette R&D efficiency.

FU Liang, YI Bin, LU Jie, XIONG Kaisheng, MA Ning, LIN Wenqiang, GAO Xiaohua, WEN Yadong, LI Wenqi, ZHENG Hongyan

Development and application of laboratory vacuum pre-conditioner

2018 Vol. 24 (4): 35-39 [Abstract] ( 36 ) HTML (0 KB) PDF (1133 KB) ( 27 ) | Cite this article

Abstract：In order to overcome poor loosening effect and low permeability rate in conventional static vacuum pre-condition system, a laboratory use vacuum pre-conditioner with positive cylinder was designed and manufactured. The newly developed vacuum pre-conditioner mainly consists of vacuum tank, vacuum unit, water heater unit, piping system and electric control system. It has resurgence function and the ability to feed at the same time. Through investigating the influence of process parameters on product quality, the following conclusions can be drawn:① The influence of laboratory use vacuum regressive equipment on sensory quality is consistent with the influence of the mass production line. Through adjustment of process parameters, sensory quality of product processed with laboratory equipment was same to sensory quality of production in mass production line.② The steam application time is positively correlated with material export moisture; ③ Under dynamic vacuum regain conditions, the loose effect and the permeability rate can be effectively improved, and leaf structure can be maintained at the same level as the product in mass production line.

WANG Rengang, LU Xinli, GOU Zhenggui, ZUO Yehua, ZHAO Zhonghui, ZENG Jifan, LEI Ting, LIU Jie, GUO Guangdong, ZHANG Jishun, ZHU Guichuan, YANG Xiuxiang, REN Xueliang

Breeding and characteristics of new flue-cured tobacco variety Guiyan2

2018 Vol. 24 (4): 40-47 [Abstract] ( 32 ) HTML (0 KB) PDF (927 KB) ( 85 ) | Cite this article

Abstract：Guiyan2, a newly breed flue-cured tobacco variety, was developed by systematic selection from a mutant of K326, and was approved by National Tobacco Variety Approval Committee in 2017. Its genetic traits were stable and grew vigorously in field. Guiyan2 had good adaptability and was easy for flue-curing. Guiyan2 was moderately resistant to black shank and TMV, and its resistance to brown spot disease was better than that of K326, the control variety. Its main economic traits, visual and sensory quality were also superior to K326. Guiyan2 was proved to be a new improved variety, which boasted both industrial application value and agricultural efficiency.

XU Tongqing, XU Yimin, ZHANG Ye, WANG Chengdong, LIU Guangliang, WANG Shusheng, DONG Jianxin, TAO Jian

Applicability validation of MODIS productivity simulation model based on flux data in typical Pan-xi tobacco planting area

2018 Vol. 24 (4): 48-54 [Abstract] ( 16 ) HTML (0 KB) PDF (1015 KB) ( 20 ) | Cite this article

Abstract：Accurate estimation of ecosystem productivity in tobacco field is important for assessing temporal and spatial variation characteristics of tobacco yield and influencing factors of tobacco leaves. Based on remote sensing data and ground flux observation data, the applicability of MODIS gross primary productivity model of typical tobacco field ecosystem in Pan-xi tobacco area wa verified and locally parameterized, so as to improve credibility of MODIS data products in productivity level evaluation. Results showed that GPP simulation value with default parameters was lower than observed value; 1:1 linear regression slope was 0.769 with determination coefficient (R2) of 0.776, efficiency coefficient (NS) of 0.253, root mean square error (RMSE) of 0.268 gC·m-2·8 day-1 The simulation effect of the model was relatively poor. Based on the flux observation data, the GPP simulation effect was improved after the MODIS productivity model was locally parameterized with default parameters. Compared with the observed values, the efficiency coefficient was improved significantly, the 1:1 linear regression slope, R2 and NS were 1.001, 0.984 and 0.919, respectively. The RMSE dropped to 0.0978 gC·m-2·8 day-1, and the time dynamic curve was consistent which validated the accuracy of the model. These results proved that the MODIS productivity model had efficient applicability after parameterization, and it could provide applicable GPP datasets to assist future research in carbon and energy balance in Pan-xi tobacco planting area.

SUN Yang, LI Qingshan, TAN Xiaolei, REN Jie, MA Xinghua, WANG Chuanyi, LIU Yaxian, XU Xiuhong

Relationships between hyperspectral characteristics and color parameters of fresh tobacco leaves

2018 Vol. 24 (4): 55-64 [Abstract] ( 32 ) HTML (0 KB) PDF (2122 KB) ( 35 ) | Cite this article

Abstract：The hyperspectral characteristics of fresh leaves of different colors in different parts and their relation with color parameters were reviewed to provide a reference for scientific determination of tobacco leaf maturity. Changes of color parameters and high spectral characteristics of tobacco leaves in different parts of tobacco were studied by using correlation analysis and regression analysis. A color parameter regression model based on high spectral characteristic parameters was established and tested. Results showed that with the increase of yellowing degree, the color parameter L, b, C increased, a value decreased first and then increased, H° value tended to decrease. The spectral parameters varied regularly with the change of leaf color. The variation of hyperspectral characteristic parameters changes regularly with the change of tobacco color. High spectral characteristic parameters had highly significant or significant correlation with each color parameter, and the color parameter regression model based on high spectral feature parameters showed better prediction effect. Therefore, it is feasible to analyze the color parameters of fresh tobacco by hyperspectral technology.

MU Qing, LIU Jinhua, HUANG Depu, CHEN Liping

Research and application of “6+6S” integrated tobacco leaf harvesting-curing service mode

2018 Vol. 24 (4): 65-71 [Abstract] ( 28 ) HTML (0 KB) PDF (1050 KB) ( 45 ) | Cite this article

Abstract：Leaf harvesting-curing is an important part of tobacco production process. Depending on tobacco growers cooperatives, Anlong county takes the"6+6S" integrated service mode of tobacco leaf harvesting-curing. The "6" means 6 operating procedures, such as mature picking, tobacco transportation, classifying and weaving, classifying and loading, specialized tobacco curing, unloading and preliminary grading. The "6S" means 6S site management, including Seiri, Seiton, Seikeetsu, Shitsuke, Safety, Save. The "6+6S" integrated service mode enjoys procedural process operation, workshop-based organizational management and standardized harvesting-curing operation. It is beneficial for enhancing the organizational degree of tobacco production and the quality of tobacco leaves, and realizing accurate control of production process, which may be promoted in practice.

MAO Zongyuan

Design and application of mobile phone APP for tobacco field technicians

2018 Vol. 24 (4): 72-78 [Abstract] ( 37 ) HTML (0 KB) PDF (2074 KB) ( 45 ) | Cite this article

Abstract：In order to collect leaf tobacco production information more efficiently and improve information management level, a mobile phone APP was designed for tobacco field technicians by analysis of job content of leaf tobacco production technician based on Rizhao's production standard. This APP covers the entire leaf tobacco production cycle and effectively collects data of tobacco field technician at work, thus forming a complete information working file from planting arrangement to harvest and curing. Thus a large tobacco leaf production database covering the whole municipality was established. By using such mobile APP, tobacco production technicians can not only review former working data at any time but also policy, file, notice and technical data released from higher-level management, which can examine tobacco production process at any time, and dispatch filed work by using video call and GPS. This software provides a referential operation scheme to solve the so called "the last mile problem" in tobacco informatization.

ZHOU Xin, LIANG Hongwei, ZHAO Yanqing, JING Zhe, RAO Yuan

Design and implementation of ITIL-based integrated IT service and management platform

2018 Vol. 24 (4): 79-85 [Abstract] ( 27 ) HTML (0 KB) PDF (1781 KB) ( 16 ) | Cite this article

Abstract：Information Technology Infrastructure Library (ITIL) is not only the infrastructure of enterprise information management process, but also an important part in the process of IT operation and maintenance management. In order to solve problems existing in the IT operation and management process of tobacco commercial enterprises, an uninterrupted management process of IT operation and maintenance management system was proposed. It was based on ITIL standard and process system of business, and combined with actual business needs. IT service and management platform was developed to maintain normal IT operation for business and to optimize IT service process and capability.

MENG Bo, PANG Lei

Preliminary study on management of cigarette logistics equipment in tobacco commercial enterprise

2018 Vol. 24 (4): 86-90 [Abstract] ( 39 ) HTML (0 KB) PDF (934 KB) ( 19 ) | Cite this article

Abstract：Cigarette logistics equipment management is one of the key points of tobacco commercial enterprise logistics. It plays an important role in improving efficiency, reducing enterprise cost, ensuring market supply and promoting market control ability. Currently, tobacco commercial enterprises do not have a mature cigarette logistics equipment management system. With the wide application of automatic equipment, tobacco business enterprises are facing such problems as higher downtime rate. This paper put forward some measures of strengthening management of cigarette logistics equipment based on life cycle management of equipment on account of analysis of current situation and existing problems.

LIU Yali, WANG Jinbang, ZHENG Xinzhang, QIU Jiqing, HONG Qunye, GONG Jinlong, ZHENG Lu

Current status and prospect of heat-not-burn tobacco products

2018 Vol. 24 (4): 91-106 [Abstract] ( 128 ) HTML (0 KB) PDF (1628 KB) ( 207 ) | Cite this article

Abstract：With a view to help researchers in China to grasp product features and technical trends of heat-not-burn tobacco product of international tobacco companies, novel tobacco products on sale in the market and under development in laboratory were collected and analyzed. Safety features of smoke from these products were reviewed. Results showed that three multinational tobacco companies, i.e. Philip Morris International, British American Tobacco and Japan Tobacco, Philip Morris International in particular, have paid more attention to R&D of heat-not-burn tobacco product with respect to the number of patents. Smoke chemistry comparison showed that heat-not-burn tobacco product is the most promising sector for tobacco industry in the future. Among all heat-not-burn tobacco products, electrical heating is superior to carbon-heating in terms of taste and release of harmful components. Compared with purely electrical heating, the hybrid products discharge less harmful ingredients in cigarette smoke.

LIU Guoshun, LI Pengyan, DING Songshuang, REN Tianbao

Brief description of Internet of Things and its prospective application to tobacco agriculture

2018 Vol. 24 (4): 107-114 [Abstract] ( 32 ) HTML (0 KB) PDF (891 KB) ( 55 ) | Cite this article

Abstract：In recent years, extensive attention has been given to Internet of Things, and it has been applied in many industries. The concept, history and development of Internet of Things, the relationships between modern agriculture and Internet of Things were discussed. The development status of Agricultural Internet of Things at home and abroad was reviewed. The application of Internet of Things in modern tobacco agriculture was put forward, such as warning system of diseases and pests, soil moisture monitoring and precision irrigation system establishment, tobacco plant growth monitoring system and precision fertilization. Problems in the application of Internet of Things in tobacco agriculture were also analyzed.

XIAO Jinzhe, ZHANG Tengjian, YANG Quanzhong, WANG Fang, CHEN Liangyuan, XU Dayong, LU Minrui

Design of in-line screening threshing recycle in green leaf threshing and redrying line

2018 Vol. 24 (4): 115-123 [Abstract] ( 17 ) HTML (0 KB) PDF (1222 KB) ( 41 ) | Cite this article

Abstract：In order to improve leaf blade structure after separation with tobacco stalk, so as to improve stability of fine physical indexes of cigarette smoke, a screening process in threshing and redrying line was designed with key process parameters being optimized, and process of tobacco in the different size interval ratio and the morphological changes were verified. Results showed that in-line screening and threshing and redrying process was simple, screening treatment of green leaves was efficient, the operation was strong, the practicability was high, and the field operation was convenient. Application of screening redrying process could effectively increase optimal size of green leaf interval ratio, improve leaf shape to make it more even and founder, and long leaves were reduced, which could help to increase proportion of fine tobacco size, and to improve cigarette making efficiency in industrial enterprises.

SHEN Dingyang, HUANG Xiaohua, GUO Hui, ZHANG Chi, REN Guanfeng

Optimization of control circuits for reducing energy consumption of dust removal system in cigarette factories

2018 Vol. 24 (4): 124-128 [Abstract] ( 27 ) HTML (0 KB) PDF (1259 KB) ( 26 ) | Cite this article

Abstract：In order to control the wind distribution and reduce the electricity consumption, the present situation of the dust collection system is analyzed. The negative pressure closed-loop control system and hierarchical control system are studied, and the energy-saving control system is established. The system can provide wind according to the field production requirement, and make the motor always runs at the best energy saving point. The results show that ① the power saving rate of the energy-saving control system reaches 46.69%; ② the motor power factor is increased by 0.16; ③ the wind distribution is improved and the dust removal effect is slightly improved.

Ren Xiaofen, QI Wenzhe, CHENG Xingkai, LIU Zhengjun, JI Xiaoxue, QIAO Kang

The control efficacy of fluopicolide·propamocarb hydrochloride to tobacco black shank and its effects on tobacco growth

2018 Vol. 24 (4): 129-134 [Abstract] ( 37 ) HTML (0 KB) PDF (2022 KB) ( 36 ) | Cite this article

Abstract：This study aimed to determine the potential of fluopicolide combination with propamocab hydrochloride for management of tobacco black shank. The mycelial linear growth rate method was used to ascertain the toxicity of six fungicides to Phytophthora nicotianae. Greenhouse tests were conducted to evaluate the control efficacy of the combination of fluopicolide and propamocab hydrochloride on tobacco black shank and its effect on tobacco plants growth. Laboratory results showed that the combination of fluopicolide and propamocarb hydrochloride (1:10, m/m) had the best control efficacy with EC50 value of 0.06 mg/L. Greenhouse results showed that the combination of fluopicolide and propamocab hydrochloride at application rate of 773.4 g a.i./hm2 exhibited remarkable control effect against the disease, with control efficacy of 81.50%, better than that of metalaxyl (55.75%) and dimethomorph (67.83%). In addition, the combination was also able to improve tobacco height, stem diameter and photosynthetic rate compared with metalaxyl and dimethomorph, and it displayed a better effect of promoting plant growth. Moreover, the combination of fluopicolide and propamocab hydrochloride increased activities of protective enzymes (polyphenol oxidase, peroxidase and superoxide dismutase) and reduced content of malondialdehyde significantly. The study indicated that the combination of fluopicolide and propamocab hydrochloride could be used as an alternative fungicide to metalaxyl and dimethomorph for management of tobacco black shank.