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Cultivation method of disease nursery of tobacco bacterial wilt on basis of cultivation mode of tobacco-paddy continuous cropping

A technology of tobacco bacterial wilt and cultivation mode, which is applied in the field of crop cultivation, can solve problems such as the inability to meet the needs of bacterial wilt breeding, uneven and unstable onset, and limited area, so as to reduce project expenses and increase the number of locations for disease nurseries The effect of expanding the area and increasing income

Inactive Publication Date: 2018-10-16
INST OF TOBACCO ANHUI ACADEMY OF AGRI SCI
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Problems solved by technology

Tobacco bacterial wilt disease nurseries are the material basis for carrying out resistance identification research. However, there are only two nationally recognized disease nurseries in China and their area is limited, which cannot meet the needs of bacterial wilt breeding.
[0003] Tobacco bacterial wilt disease nursery cultivation generally adopts indoor cultivation of strains to inoculate fields or select continuous cropping natural disease fields in diseased areas, which has disadvantages such as high cost or uneven and unstable disease incidence

Method used

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Embodiment

[0026] The present invention is based on the cultivation method of tobacco bacterial wilt disease nursery of tobacco-rice continuous cropping cultivation mode, comprises the following steps:

[0027] 1. Field selection

[0028] Select natural disease fields with continuous cropping incidence rate ≥ 20%, clay soil and soil pH value ≤ 5.5.

[0029] 2. The choice of fertilizer

[0030] Use nitrogen, phosphorus and potassium ternary compound fertilizer as the base fertilizer, N:P:K=15:15:15, and the amount of fertilizer applied is 50kg / 667m 2 , use 5kg / 667m when topdressing 2 Ternary compound fertilizer and 2kg / 667m 2 of ammonium bicarbonate.

[0031] 3. Tobacco cultivation

[0032] Plant susceptible varieties on the fields selected in step 1 until the disease incidence rate reaches 100% at the adult plant stage and the disease index is ≥ 50%. When the field disease is uniform, it is the success standard for disease nursery cultivation. If the field reaches this standard for ...

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Abstract

The invention discloses a cultivation method of a disease nursery of tobacco bacterial wilt on the basis of a cultivation mode of tobacco-paddy continuous cropping. The disease nursery is cultivated by adopting the mode of tobacco-paddy continuous cropping, and the invention emphatically solves the problems of germ types and sources, the maintaining of the germ amount and uniformity, and the like,so that the maintenance cost of the disease nursery is reduced, and the requirement on the disease nursery by a resistance breeding project is better met.

Description

technical field [0001] The invention relates to a method for cultivating a tobacco bacterial wilt disease nursery based on a tobacco-rice continuous cropping cultivation mode, and belongs to the technical field of crop cultivation. Background technique [0002] Tobacco is one of the important economic crops in my country, and tobacco varieties are an important material basis for tobacco production. Accelerating the pace of variety breeding is an urgent requirement for tobacco breeders, and cultivating tobacco varieties resistant to bacterial wilt is an important direction for breeders. Tobacco bacterial wilt is a bacterial disease caused by Ralstonia solanacearum, which is a devastating disease on tobacco. Breeding disease-resistant varieties is an effective and environmentally friendly control method. The field disease nursery identification method can better reflect the resistance of the variety, and can examine its plant type and other agronomic traits. It is a relativel...

Claims

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Application Information

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IPC IPC(8): A01G22/45A01G22/22
CPCA01G22/45A01G22/22
Inventor 孙学永祖朝龙姜超强沈嘉阎轶峰
Owner INST OF TOBACCO ANHUI ACADEMY OF AGRI SCI
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