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2024 Volume 3 Issue 1
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BI Kaitao, HAN Wei, CHEN Foyuan, et al. Green Prevention and Control Technology for Tobacco Bacterial Wilt Based on Rhizosphere Biological Barrier[J]. PLANT HEALTH AND MEDICINE, 2024, (1): 22-32. doi: 10.13718/j.cnki.zwyx.2024.01.003
Citation: BI Kaitao, HAN Wei, CHEN Foyuan, et al. Green Prevention and Control Technology for Tobacco Bacterial Wilt Based on Rhizosphere Biological Barrier[J]. PLANT HEALTH AND MEDICINE, 2024, (1): 22-32. doi: 10.13718/j.cnki.zwyx.2024.01.003
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Green Prevention and Control Technology for Tobacco Bacterial Wilt Based on Rhizosphere Biological Barrier

  • 1. Sichuan Tobacco Company Yibin Company, Yibin Sichuan 644600, China;

  • 2. College of Plant Protection, Southwest University, Chongqing 400715, China;

  • 3. Chongqing Xinong Plant Protection Technology Development, Chongqing 400700, China

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  • Received Date: 06/12/2023

  • MSC: S435.72

  • Control of bacterial wilt has always been a pressing issue in the development of tobacco agriculture. Exploring and establishing a green, sustainable, and efficient technical system for control of tobacco bacterial wilt holds immense production value. In this study, Yaoba Town, Junlian County, Yibin City, Sichuan Province, a region which tobacco bacterial wilt occurred frequently for many years, was selected for experiment. The green control technology system of tobacco bacterial wilt was constructed based on the rhizosphere biological barrier, soil conservation, mixing antagonistic agents with organic fertilizers, and induction of resistance with nutrient. The effects of this technology on tobacco growth, soil elements, microbial flora, and economic benefits were systematically evaluated. The results showed that the application of this technology significantly promoted the growth and development of tobacco plants. Compared to the control area, plant height, leaf number, stem circumference, maximum leaf length, and maximum leaf width increased by 9.80%, 19.53%, 16.56%, 14.86%, 29.65%, respectively, during the topping period. The utilization of soil elements by tobacco plants was also significantly improved. Compared to the soil of control area, alkali-hydrolyzed nitrogen, available phosphorus, available potassium decreased by 76.58 mg/kg, 80.89 mg/kg and 506.25 mg/kg, respectively. Exchangeable calcium and magnesium content, as well as pH values, increased respectively by 1 600 mg/kg, 176.50 mg/kg, and 0.4 units after applying this technology. After the implementation of technology, the soil microbial flora was optimized by compared to the control area. The abundance of beneficial bacteria Bacillus, Sphingomonas, Bryobacter, Bradyrhizobium, Flavobacterium, Arthrobacter and Sphingobium increased by 462.75%, 69.77%, 664.10%, 131.34%, 101.97%, 123.74% and 490.00%, respectively, whereas Rella soliculosa decreased by 63.14%. During the period of tobacco harvesting in the demonstration area, the relative control efficiency for bacterial wilt still reached to approximately 86%, and the comprehensive economic benefit was ￥ 1 337.62/667 m2 higher than that in non-demonstration areas. Demonstrative application proved that this technology can optimize soil properties, reduce occurrences of bacterial wilt and increase tobacco yield, demonstrating significant potential for future applications in management of tobacco bacterial wilt.
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Green Prevention and Control Technology for Tobacco Bacterial Wilt Based on Rhizosphere Biological Barrier

  • Received Date: 06/12/2023

Abstract: Control of bacterial wilt has always been a pressing issue in the development of tobacco agriculture. Exploring and establishing a green, sustainable, and efficient technical system for control of tobacco bacterial wilt holds immense production value. In this study, Yaoba Town, Junlian County, Yibin City, Sichuan Province, a region which tobacco bacterial wilt occurred frequently for many years, was selected for experiment. The green control technology system of tobacco bacterial wilt was constructed based on the rhizosphere biological barrier, soil conservation, mixing antagonistic agents with organic fertilizers, and induction of resistance with nutrient. The effects of this technology on tobacco growth, soil elements, microbial flora, and economic benefits were systematically evaluated. The results showed that the application of this technology significantly promoted the growth and development of tobacco plants. Compared to the control area, plant height, leaf number, stem circumference, maximum leaf length, and maximum leaf width increased by 9.80%, 19.53%, 16.56%, 14.86%, 29.65%, respectively, during the topping period. The utilization of soil elements by tobacco plants was also significantly improved. Compared to the soil of control area, alkali-hydrolyzed nitrogen, available phosphorus, available potassium decreased by 76.58 mg/kg, 80.89 mg/kg and 506.25 mg/kg, respectively. Exchangeable calcium and magnesium content, as well as pH values, increased respectively by 1 600 mg/kg, 176.50 mg/kg, and 0.4 units after applying this technology. After the implementation of technology, the soil microbial flora was optimized by compared to the control area. The abundance of beneficial bacteria Bacillus, Sphingomonas, Bryobacter, Bradyrhizobium, Flavobacterium, Arthrobacter and Sphingobium increased by 462.75%, 69.77%, 664.10%, 131.34%, 101.97%, 123.74% and 490.00%, respectively, whereas Rella soliculosa decreased by 63.14%. During the period of tobacco harvesting in the demonstration area, the relative control efficiency for bacterial wilt still reached to approximately 86%, and the comprehensive economic benefit was ￥ 1 337.62/667 m2 higher than that in non-demonstration areas. Demonstrative application proved that this technology can optimize soil properties, reduce occurrences of bacterial wilt and increase tobacco yield, demonstrating significant potential for future applications in management of tobacco bacterial wilt.

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