CN-121970662-A - Application of planting method of flue-cured tobacco interplanting sweet potatoes in prevention and treatment of bacterial wilt of flue-cured tobacco

CN121970662ACN 121970662 ACN121970662 ACN 121970662ACN-121970662-A

Abstract

The invention discloses an application of a flue-cured tobacco interplanting sweet potato planting method in preventing and treating bacterial wilt of flue-cured tobacco, and relates to the technical field of flue-cured tobacco planting. The invention obviously reduces the incidence of bacterial wilt of flue-cured tobacco, reduces the bacterial wilt by changing the nutrition composition of tobacco plant rhizosphere soil, reduces the bacterial wilt by increasing the diversity of bacterial communities in the tobacco plant rhizosphere soil, optimizing the structure composition and enhancing the complexity of network structures, namely improving the interaction among beneficial bacterial communities, and reduces the bacterial wilt by recruiting antibacterial metabolites of the tobacco plant rhizosphere soil.

Inventors

Wei Xingqi
ZOU MINJIE
LI QIANG
ZHONG JUN
WU YUMING
LI XINJIAN
ZHANG XIZHONG
YU YAN
TANG XIAOYANG
YOU ANDI
SONG ZEJUN
CHEN JINKUN

Assignees

贵州省烟草公司黔南州公司

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (4)

1. The application of the planting method of flue-cured tobacco interplanting sweet potatoes in preventing and treating bacterial wilt of flue-cured tobacco is characterized by comprising the following steps: (1) Preparing a tobacco field, namely ridging the tobacco field after applying a base fertilizer in the tobacco field in the last ten days of 3 months, and finally covering a layer of degradable mulching film on the surface layer of soil; (2) Transplanting tobacco plants, namely transplanting flue-cured tobacco in the middle and late ten days of 4 months, wherein the planting density is 1100-1200 plants/mu, the row spacing of the tobacco plants is 120cm, and the plant spacing is 50-55cm; (3) Interplanting sweet potatoes, namely harvesting lower tobacco leaves in 6 months, and interplanting sweet potatoes beside tobacco plants after harvesting the lower tobacco leaves of the tobacco plants; (4) Harvesting tobacco plants and sweet potatoes, namely harvesting tobacco leaves in the middle part of 7 months, harvesting tobacco leaves in the upper part of the tobacco plants in the middle and late 9 months, and harvesting sweet potatoes in the middle and late 10 months.
2. The use of a method for interplanting sweet potatoes in flue-cured tobacco according to claim 1 for controlling bacterial wilt of flue-cured tobacco, wherein in step (3), sweet potatoes are interplanted beside tobacco plants within 0-10 days after harvesting tobacco leaves at the lower part of the tobacco plants.
3. The application of the flue-cured tobacco interplanting sweet potato planting method in preventing and treating bacterial wilt of flue-cured tobacco according to claim 1, wherein in the step (3), one row of sweet potatoes are interplanted on two sides of each row of tobacco plants in a tobacco ridge.
4. The application of the flue-cured tobacco interplanting sweet potato planting method in preventing and treating bacterial wilt of flue-cured tobacco according to claim 1, wherein in the step (3), the distance between the sweet potatoes and tobacco plants is 11-13 cm, and the plant spacing between the sweet potatoes is 23-27 cm.

Description

Application of planting method of flue-cured tobacco interplanting sweet potatoes in prevention and treatment of bacterial wilt of flue-cured tobacco Technical Field The invention relates to the technical field of flue-cured tobacco planting, in particular to application of a planting method of flue-cured tobacco interplanting sweet potatoes in preventing and treating bacterial wilt of flue-cured tobacco. Background Producing good quality tobacco requires robust tobacco seedlings and good tobacco field environmental conditions. The existing tobacco planting has the phenomena of long-term continuous cropping, large-scale use of chemical fertilizers and pesticides, and the like, so that the problems of unbalanced soil nutrients, hardening, pollution, germ accumulation and the like are caused, the problems increase the occurrence of soil-borne diseases, and finally the reduction of tobacco yield and tobacco quality are caused, so that the sustainable utilization of tobacco field soil and the improvement of tobacco quality are severely limited. The bacterial wilt of flue-cured tobacco induced by ralstonia solanacearum (Ralstonia solanacearum) is widely existed in soil, is the second most widely accepted pathogenic bacteria, has become one of important biotic stress for restricting sustainable development of flue-cured tobacco industry due to the characteristics of wide host range, strong survival ability, complex transmission path and the like, and meanwhile, the prevention and control means still have some limitations, although biological prevention and control are expected, the prevention and control effect is still difficult to achieve in a short period due to the short survival time of most exogenous biocontrol bacteria and the potential risk of antibiotics, and the traditional chemical bactericide has been gradually limited to use along with the increasing attention of people on food safety and environmental pollution. Therefore, it is imperative to develop a safer and more effective production management measure for reducing soil-borne diseases of tobacco plants. Disclosure of Invention In view of the above, the invention provides an application of a planting method of flue-cured tobacco intercropping sweet potatoes in preventing and treating bacterial wilt of flue-cured tobacco. The application of the planting method of flue-cured tobacco interplanting sweet potatoes in preventing and treating bacterial wilt of flue-cured tobacco comprises the following steps: (1) Preparing a tobacco field, namely ridging the tobacco field after applying a base fertilizer in the tobacco field in the last ten days of 3 months, and finally covering a layer of degradable mulching film on the surface layer of soil; (2) Transplanting tobacco plants, namely transplanting flue-cured tobacco in the middle and late ten days of 4 months, wherein the planting density is 1100-1200 plants/mu, the row spacing of the tobacco plants is 120cm, and the plant spacing is 50-55cm; (3) Interplanting sweet potatoes, namely harvesting lower tobacco leaves in 6 months, and interplanting sweet potatoes beside tobacco plants after harvesting the lower tobacco leaves of the tobacco plants; (4) Harvesting tobacco plants and sweet potatoes, namely harvesting tobacco leaves in the middle part of 7 months, harvesting tobacco leaves in the upper part of the tobacco plants in the middle and late 9 months, and harvesting sweet potatoes in the middle and late 10 months. Further, in the step (3), sweet potatoes are interplanted beside the tobacco plants within 0-10 days after harvesting tobacco leaves at the lower parts of the tobacco plants. Further, in the step (3), one row of sweet potatoes are respectively planted on two sides of each row of tobacco plants in the tobacco ridge. Further, in the step (3), the distance between the sweet potatoes and the tobacco plants is 11-13 cm, and the plant spacing between the sweet potatoes is 23-27 cm. Compared with the prior art, the invention has the following beneficial technical effects: (1) The invention obviously reduces the incidence rate of bacterial wilt of flue-cured tobacco; (2) According to the invention, bacterial wilt diseases are reduced by changing the nutrition composition of tobacco plant rhizosphere soil; (3) The bacterial wilt disease is reduced by increasing the diversity of bacterial communities in rhizosphere soil of tobacco plants, optimizing the structural composition and enhancing the complexity of network structures, namely improving the interaction among beneficial bacterial communities; (4) The invention reduces bacterial wilt disease by recruiting tobacco plant rhizosphere soil antibacterial metabolites. Drawings FIG. 1 is a graph showing the influence of different plants in flue-cured tobacco interplanting on bacterial wilt disease incidence of a tobacco field and pathogenic bacteria quantity, wherein the graph A shows the influence of different plants in flue-cured tobacco interplantin