Green prevention and control method for tobacco black shank

A technology for the prevention and control of tobacco black shank, which is applied in the field of green prevention and control of tobacco black shank, can solve the problems of unproposed control methods, tobacco quality and yield impact, etc., to reduce pathogenic bacteria in tobacco fields, ensure healthy growth, reduce Effect of outbreak of tobacco black shank

Inactive Publication Date: 2019-02-05
TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the above-mentioned tobacco black shank disease, the prior art has not yet proposed an effective control method, which seriously affects the quality and yield of tobacco

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of biological bacterial fertilizer: the above-mentioned corn chips, wheat bran, soybean meal, quicklime, potassium dihydrogen phosphate, magnesium sulfate and urea are stacked and fermented under natural conditions for 10-15 days, then turned over, and stacked and fermented for 7-10 days day, then disperse the material to dissipate heat, and when the temperature of the material drops to 25-30°C, add the bacteria and mix the material evenly and then ferment at room temperature. The temperature is controlled at 26-30°C and the humidity is 60-65°C. The biological bacterial fertilizer is prepared.

[0031] The biological agent is one of the following raw materials: 200 billion live spores / gram Bacillus subtilis, 200 grams / mu, 200 million spores / gram Trichoderma wettable powder, 200 grams / mu, 100 billion spores / gram Trichoderma wettable powder, 14 g / mu, 3% eugenol soluble solution, 28 g / mu, 1×10 6 Spore / gram Pythium oligandrum wettable powder, 40 g / mu...

Embodiment 1

[0039] In the tobacco field where tobacco black shank disease is very serious in Song County, the incidence rate in the field is about 80%. In the early spring of last year, the self-made biological fertilizer was applied in the field, 150-200 kg / mu, deep plowing, even harrowing, and planting tobacco Ridge before the field to colonize the biocontrol bacteria to form a protective layer. After transplanting, normal field management was carried out. The investigation was carried out during the onset of black shank, and the incidence of black shank in the field was about 50%. According to this method, the prevention and control work of biological bacterial fertilizer was carried out again this year. The incidence rate of blackleg disease in the field this year was about 20%.

[0040] After testing, the method is continuously applied to prevent and treat black shank in continuous cropping tobacco fields, and the incidence of tobacco black shank decreases year by year.

Embodiment 2

[0042] The two dosage forms of biological bacteria agents A and B have certain control effects on tobacco black shank when applied in Xiangxian County and Pingdingshan, Henan Province. The average control effect of the test biological agents A and B on tobacco black shank was 36.34%; the average control effect of the two formulations of biological agents A and B was 31.13% in the Pingdingshan field test on tobacco black shank.

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Abstract

The invention discloses a green prevention and control method for a tobacco black shank. The method includes the following steps that an anti-disease variety is selected, and scientific crop rotationis conducted; 2, a tobacco field is managed in winter, wherein before late winter, deep tillage and deep turning are conduct until the depth reaches 40 cm, at coldest time, it is required to make temperature lower than zero degree, winter irrigation is conducted, the depth of water reaches 40-50 cm, soil is frozen, and insect pest killing and sterilizing are conducted; 3, land preparation and ridging are conducted; 4, robust seedlings are cultivated; 5, a biological fungicide is used for prevention and control. Compared with a traditional prevention and control method for the tobacco black shank, through an integrated technology, self-made biological bacterial fertilizer is added, occurrence of the tobacco black shank is reduced greatly, deep irrigation is conducted in winter, pathogenic bacteria of the tobacco field can be effectively reduced, the black shank of the crop rotation tobacco field is made reduced year by year, and therefore healthy growth of tobacco leaves is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tobacco planting, and in particular relates to a green prevention and control method for tobacco black shank. Background technique [0002] Tobacco black shank disease is a disease caused by the pathogenic type of Phytophthora oomycetes that parasitizes tobacco. It is one of the most serious diseases in tobacco production in the world. It is also known as tobacco "blight", "black stem madness" and "black root disease". etc., are devastating root and root rot diseases. All major tobacco-producing areas in China have occurred, of which Anhui, Shandong, and Henan provinces are historically severely affected areas, and southern tobacco areas such as Yunnan, Guizhou, Sichuan, Hunan, Guangdong, Guangxi, and Fujian are mostly mixed with tobacco bacterial wilt, resulting in The harm is more serious, and it is an important disease in tobacco production. [0003] Tobacco black shank pathogen survives the winter i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/00A01G22/45A01C21/00C05G3/00A01N63/04A01N63/02A01N31/16A01N61/00A01P3/00
CPCA01C21/00A01G13/00A01G22/45A01N31/16A01N61/00A01N63/10A01N63/30C05B7/00C05G3/00C05C9/00C05D3/02C05D5/00C05F5/002C05F11/00C05F11/08
Inventor 陈玉国李成军李淑君邱睿李琦陈秀华李小杰白静科郭梅燕林娟刘东升李中义
Owner TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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