A method of controlling potato stem nematode by using dry and hot air treatment

Abstract

The invention discloses a method for treatment, prevention and control of potato stem nematodes by using dry hot air. The method comprises the steps: putting seed potatoes in a hot air drying environment with a flow rate of 0.3 m / s and a temperature of 35-40 DEG C, performing preheating for 1-1.5 h, putting the preheated seed potatoes quickly in a hot air drying environment with a flow rate of 0.3m / s and a temperature of 55-58 DEG C, and performing heat treatment for 40-60 minutes continuously. When the method is compared with the prior art, by adopting the dry hot air to treat the seed potatoes, eggs of the nematodes in potato stems can be killed, the mortality of larva and adults can reach 98% or above, and the germination rate of the seed potatoes is not affected; and the transmissionpath of the potato stem nematodes is cut effectively, and the method is especially important to disease-free potato growing areas, and has simple operation, safety and effectiveness, no pesticide residues and no pollution to the environment.

Description

Technical field[0001]The present invention relates to the field of prevention and control technology of potato straps, in particular, a method of treating prevention of potato pests with dry hot air.Background technique[0002]Potato rotted stem lines are internationally recognized quarantine pathogenic nematodes, and is also one of the important devastating nematodes of potatoes. It is catastrophic to my country's potato production. Potato tropic disease caused by rotten stems, generally can result in 20% -50% reduction in production, more than 80%, even absorbed, can also cause rotten in the storage period. therefore. Effective prevention and control of potato rotted straw nematodes is an important measures to ensure safety and economic benefits, and it is also urgent problems in the production of potato production.[0003]At present, the prevention and treatment of chemical agents is still one of the most important means in the comprehensive prevention and control of nematodes. The m...

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Problems solved by technology

[0006] However, the above two patents all have the following disadvantages: pesticide residues cause environmental pollution and threaten food safety

However, there are also the following disadvantages: the control effect of microbial preparations is unstable and the control effect is poor

But there are also the following disadvantages: complicated process, low extraction rate and high cost

[0009] Therefore, safe and effective control of nematode diseases is an urgent problem to be solved in agricultural production, and the existing control measures cannot meet this requirement.

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