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Method for applying methyl bromide fumigation agent to kill Tilletia controversa Kuehn

A technology of wheat dwarf smut and application of methyl bromide is applied in the field of applying methyl bromide fumigant to kill wheat dwarf smut, and can solve the problems of slow speed, flammable ethylene oxide, weak electron beam penetration ability, and the like, To achieve the effect of safe operation and widespread application

Inactive Publication Date: 2008-05-28
中华人民共和国天津出入境检验检疫局
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Problems solved by technology

[0003] The treatment of TCK blight wheat mainly includes heat treatment method, ethylene oxide fumigation method, and radiation sterilization method. The heat treatment method is not used due to the decline in wheat quality after treatment, limited processing capacity and slow speed; irradiation treatment Due to the poor flexibility of the electron beam irradiation device and the weak penetrating ability of the electron beam, it has not been widely used
Ethylene oxide fumigation technology is relatively mature, but because ethylene oxide is flammable and explosive, its practical application is affected. In recent years, there have been reports abroad on the bactericidal effect of methyl bromide on TCK in wheat seeds and soil, but this bactericidal Whether the effect can be applied to kill the wheat TCK pathogen remains to be concluded after conducting experiments and analysis

Method used

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Embodiment Construction

[0025] The methyl bromide (98% by weight concentration) fumigant (gas) used in the method is produced by Lianyungang Dead Sea Bromide Co., Ltd. In order to verify the sterilizing effect of methyl bromide fumigant on wheat TCK under the above-mentioned fumigation parameter conditions, the present invention carries out following test process to the wheat with TCK germ:

[0026] Put blight wheat (loading capacity 50%) in a stainless steel fumigation barrel (self-made) with a sealed cover, insert the methyl bromide fumigant cylinder delivery tube needle into the fumigation barrel, and follow the set dose (180g / m 3 、90g / m 3 ) and under the conditions of constant temperature (20°C) and relative humidity (60-70%):

[0027] 180g / m 3 Dose, fumigation once every 120 hours;

[0028] 90g / m 3 Dose, 2×120h secondary fumigation.

[0029] See (Table 2) for the sterilizing effect of methyl bromide on TCK under the condition of 50% loading.

[0030]

temperature

tempera...

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Abstract

The invention relates to a treatment method of a Tilletia controversa Kuhn (TCK) of wheat, in particular to a method to kill the TCK of the wheat through a methyl bromide fumigant. The method comprises that: the wheat with the TCK is enclosed into a closed space, and the methyl bromide with a weight ratio concentration of 98 percent is put into the closed space holding the wheat to fumigate the wheat. The fumigation is carried out in a preset dosage (180g / m<3>, 90g / m<3>) and at the ambient temperature (20 DEG C) and under the relative humidity of 60 to 70 percent; the fumigating time is 120h in the dosage of 180g / m<3> for one time, and 2 multiplied by 120h in the dosage of 90g / m<3> for two times. The method can kill the TCK of the wheat by 100 percent, and the operation is safe, reliable and can be widely popularized and applied.

Description

technical field [0001] The invention relates to a method for treating Tilletia controversa Kühn (TCK), in particular to a method for killing Tilletia controversa Kühn by using a methyl bromide fumigant. Background technique [0002] TCK is a dangerous fungal disease that is the most harmful among wheat diseases and difficult to control and eradicate completely. The systemic infection of the pathogen dwarfs the wheat plants, and the grains on the diseased ears are replaced by black powder. Generally, in popular years, wheat production can be reduced by 30% to 50%, and when it is seriously damaged, the production reduction can be as high as 75%. Some people in China have conducted investigations, and the TCK blighted wheat stored in the granary for 5 years still has biological activity. The teliospores and galls of the TCK pathogen can travel long distances with wheat. At present, the disease has spread to about 29 countries on five continents in the world, among which Nort...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N29/02A01N25/18A01P3/00
Inventor 黄庆林刘永胜魏亚东楼旭日程瑜康芬芬张瑞峰
Owner 中华人民共和国天津出入境检验检疫局
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