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Crop rotation method for reducing disease incidence rate of tobacco bacterial wilt

A technology for tobacco bacterial wilt and morbidity, applied in horticultural methods, botany equipment and methods, horticulture, etc., can solve problems such as no bacterial wilt, save drug costs and labor, improve soil environment, The effect of reducing the amount of pesticide residues

Inactive Publication Date: 2017-12-01
HUBEI TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no specific report on the effective control of bacterial wilt in the crop rotation system in the dry land.

Method used

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  • Crop rotation method for reducing disease incidence rate of tobacco bacterial wilt
  • Crop rotation method for reducing disease incidence rate of tobacco bacterial wilt
  • Crop rotation method for reducing disease incidence rate of tobacco bacterial wilt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: the screening of crop rotation

[0021] In a plot severely infested with R. solanacearum, soil was taken, and 2,3,5-triphenyltetrazolium chloride (TTC) medium was used in the laboratory to measure the number of R. solanacearum in the soil, and then the concentration 1×10 9 cfu / ml suspension of R. solanacearum was mixed with soil to artificially increase the number of R. solanacearum in the soil, so that the number of R. solanacearum in the soil reached about 1×10 per gram of dry soil 7 Colony forming unit (cfu / g). Several pots were then filled with this infected soil with a determined R. solanacearum population and watered to the field capacity level.

[0022]Summer crop screening is done first. Summer crops used for rhizosphere inhibition of R. solanacearum evaluation include sorghum (test variety Jiza 130), soybean (test variety Nandou 12), upland cotton (test variety Huazamian H318), teff (test variety bent-leaved teff), pyrethrum (for the test va...

Embodiment 2

[0029] Embodiment two: determination of crop rotation mode

[0030] A crop rotation experiment was carried out in a plot heavily infested with R. solanacearum. Based on the test results of Example 1, marigold and sweet potato were selected as rotation crops for summer crops, and wheat was selected as rotation crops for winter crops. A total of 6 treatments were set (Table 3):

[0031] Table 3 shows the crop rotation test of R. solanacearum infected plots

[0032]

[0033] Treatment 1: In the first year, about 30 days before the conventional tobacco transplanting period, the soil should be prepared. According to the technical requirements of the local tobacco production, fertilization, ridging, and fixed-distance transplanting of the susceptible tobacco variety Honghua Dajinyuan were carried out in the tobacco field. After the tobacco leaves were harvested , clear the tobacco stems and weeds out of the tobacco field, plow the soil of the tobacco field, sow and plant green ...

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Abstract

The invention provides a crop rotation method for reducing disease incidence rate of tobacco bacterial wilt. Crop rotation is performed on tobacco plants and a crop combination of wheat and tagetes erecta (or sweet potatoes), and concrete steps are as follows: tobacco plants are planted according to a conventional method in a first year; after tobacco plants are harvested, the wheat is planted ; in a second year, after the wheat is harvested, the tagetes erecta (or the sweet potatoes) is planted, and after the tagetes erecta (or the sweet potatoes) is harvested, the wheat is planted; in a third year, after the wheat is harvested, the tagetes erecta (or the sweet potatoes) is planted, and after the the tagetes erecta (or the sweet potatoes) is harvested, deep ploughing and upturned soil drying in the sun is performed on soil; in a four year, the tobacco plants are planted according to a conventional method; and rotation planting of the tobacco plants, the wheat, the tagetes erecta (or the sweet potatoes), the wheat, the tagetes erecta (or the sweet potatoes), the tobacco plants and the like is repeatedly performed. According to the invention, the method is adopted, thus tobacco bacterial wilt can be effectively controlled, the disease incidence rate is reduced, soil physical and chemical properties are improved, and the tobacco yield and quality are improved.

Description

technical field [0001] The invention belongs to the technical field of tobacco planting, and in particular relates to a crop rotation method for reducing the incidence of tobacco bacterial wilt. Background technique [0002] Tobacco belongs to the annual herbaceous plant of Solanaceae and is an important economic crop in my country. In recent years, bacterial wilt has become more and more harmful to tobacco production in my country, especially in the southern tobacco-growing areas of my country. It has seriously reduced the yield and quality of tobacco, and caused heavy economic losses. It has become an important factor restricting the production of high-quality flue-cured tobacco in my country. [0003] Tobacco bacterial wilt is a typical bacterial disease of vascular bundles, and the plant is susceptible to systemic infection, so it is very difficult to control. Ralstonia solanacearum can survive in soil, diseased plant residues and potential host roots, as well as its wi...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G13/00A01G7/06
CPCA01G7/06A01G13/00A01G22/00
Inventor 曹景林程君奇李亚培吴成林张俊杰
Owner HUBEI TOBACCO SCI RES INST
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