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Method for controlling tobacco bacterial wilt

A tobacco bacterial wilt and tobacco technology, applied in the field of tobacco bacterial wilt control, can solve the problems of resistance loss and poor effect of disease-resistant varieties, and achieve the effects of delaying tobacco infection with bacterial wilt, saving labor, and increasing tobacco leaf yield

Inactive Publication Date: 2013-07-10
TOBACCO SCI RES INST CHONGQING CITY COMPANY OF CHINA NAT TOBACCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no effective control method for tobacco bacterial wilt. Breeding disease-resistant or disease-tolerant varieties is the most economical and effective method for bacterial wilt control. However, due to the host diversity and genome variability of bacterial wilt pathogens, it often leads to Loss of resistance in resistant varieties, while single application of biological and chemical agents is ineffective

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for controlling tobacco bacterial wilt, comprising the steps:

[0019] (1) Soil improvement: add quicklime to the tobacco planting land, the amount of quicklime is 667m 2 Apply 200kg, and then carry out deep soil plowing before winter;

[0020] (2) Balance soil nutrients: Apply 85kg of base fertilizer to the bottom of the soil-improved trench, and then apply 15kg of base fertilizer to the hole before transplanting the tobacco seedlings. The base fertilizer is organic and inorganic fertilizer, purchased from "Best" produced in Zhenjiang, Jiangsu, Among them, the mass percentage of organic matter is ≥20%, and the mass ratio of nitrogen, phosphorus and potassium is 6:6.5:10.5;

[0021] (3) Treatment of tobacco seedlings: before transplanting, dip the roots with 100,000 cfu / g Paenibacillus polymyxa or 0.2 billion spores / g Bacillus cereus, and then use chitin 1000mg / L diluent or 0.02mgL diluent of brassinolide was sprayed for treatment, and the roots were irrigat...

Embodiment 2

[0025] A method for controlling tobacco bacterial wilt, comprising the steps:

[0026] (1) Soil improvement: add quicklime to the tobacco planting land, the amount of quicklime is 667m 2 Apply 100kg, and then deep dig the soil before winter;

[0027] (2) Balance soil nutrients: apply 90 kg of base fertilizer to the bottom of the soil-improved trench, and then apply 10 kg of base fertilizer to the hole before transplanting the tobacco seedlings; The mass percentage of organic matter is ≥20%, and the mass ratio of nitrogen, phosphorus and potassium is 6:6.5:10.5;

[0028] (3) Treatment of tobacco seedlings: before transplanting, dip the roots with 65,000 cfu / g Paenibacillus polymyxa or 0.15 billion spores / g Bacillus cereus, and then use chitin 900mg / L diluent or 0.04mgL diluent of brassinolide was sprayed, and the roots were irrigated with a mixture of 180 mg / L acetoallicin and 900 mg / L mancozeb for 2-3 times with an interval of 7 days.

[0029] Use the method of this exampl...

Embodiment 3

[0032] A method for controlling tobacco bacterial wilt, comprising the steps:

[0033] (1) Soil improvement: add quicklime to the tobacco planting land, the amount of quicklime is 667m 2 Apply 50kg, and then carry out deep soil plowing before winter;

[0034] (2) Balance soil nutrients: apply 95 kg of base fertilizer to the bottom of the soil-improved trench, and then apply 5 kg of base fertilizer to the hole before transplanting the tobacco seedlings; The mass percentage of organic matter is ≥20%, and the mass ratio of nitrogen, phosphorus and potassium is 6:6.5:10.5;

[0035] (3) Tobacco seedling treatment: before transplanting the tobacco seedlings, use 50,000 cfu / g of Paenibacillus polymyxa or 0.1 billion spores / g of Bacillus cereus to dip the roots for treatment, and then use chitin 800mg / L diluent or 0.05mgL diluent of brassinolide was sprayed for treatment, and the roots were flooded with a mixture of 200 mg / L acetoallicin and 1000 mg / L mancozeb for 2-3 times, with a...

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Abstract

The invention discloses a method for controlling tobacco bacterial wilt. The tobacco bacterial wilt is controlled by soil improvement, balance of soil nutrient and a tobacco seedling treatment system. The method specifically comprises the following steps of: adding a modifier to a tobacco planting field, then carrying out soil ploughing before winter; fertilizing a base fertilizer to the improved soil; fertilizing the base fertilizer to a hole before transplanting the tobacco seedling; carrying out root dipping treatment by bacteria liquid of paenibacillus polymyxa or bacillus cereus before transplanting the tobacco seedling; carrying out spray treatment by chitosan or brassinolide at the resettling stage; and carrying out root irrigation treatment for 2-3 times by mixed solution of ethylicin or mancozeb at the vigorous growing stage, wherein the interval is 7 days each time. By utilizing the method disclosed by the invention, explosion of the tobacco bacterial wilt can be delayed; the tobacco yield can be increased; the tobacco quality is improved; meanwhile, the acid soil can be improved; and the method can be widely applied to the tobacco planting industry.

Description

technical field [0001] The invention belongs to the field of crop disease prevention and control, and relates to a method for controlling tobacco bacterial wilt. Background technique [0002] Tobacco bacterial wilt, commonly known as "smoke plague" and "half-side madness" in China, is caused by Reerella solani ( Ralstonia solanacearum ) causing the most devastating bacterial disease on tobacco production. The devastating harm of R. solanacearum to tobacco was first reported in Indonesia in 1864. At present, tobacco bacterial wilt has spread widely around the world, causing serious harm, and gradually spreading to high-altitude, cold-smoking areas, seriously restricting the sustainable development of tobacco leaves in my country. The main factors for the occurrence of bacterial wilt include: soil, climate, fertilizers and fertilization measures, water conservancy conditions, drought and flood resistance measures and other environmental conditions; the accumulation of pathog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01C21/00A01G13/00
Inventor 丁伟杜根平许安定杨超陈海涛郑世燕张永强崔伟伟
Owner TOBACCO SCI RES INST CHONGQING CITY COMPANY OF CHINA NAT TOBACCO
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