Method for controlling blended tobacco root knot nematode disease

Abstract

The invention discloses a method for controlling a blended tobacco root knot nematode disease.The method comprises the steps that before tobacco seedlings are transplanted, a root knot nematode disease control agent abamectin is applied into a transplant field tobacco pond, after transplanting is conducted and then watering is finished, a root knot nematode disease control agent abamectin and carbosulfan; root-inducing wettable powder is diluted with water by 150-250 times, and 150 ml-250 ml of diluted root-inducing wettable powder is applied for root irrigation per pond 7-10 days after the tobacco seedlings are transplanted; after the tobacco seedlings are transplanted, it is guaranteed that the moisture content of soil rhizosphere ranges from 10% to 20%.According to the method for controlling the blended tobacco root knot nematode disease, the two agents are subjected to reasonable matching and alternative using for tobacco regions such as Stone Forest, Yiliang, Anning, Jinning and Xundian where various nematodes occur in a hybrid mode, wherein when transplanting is conducted, abamectin is adopted to mix with soil or sand, pesticide application and earthing are conducted near the roots; after the transplanting is finished, 'Jindongwang' is used for root irrigation on the same day, and 'Jindongwang' can be adopted to conduct root irrigation twice for heavy disease areas.

Description

Technical field [0001] The invention belongs to the technical field of tobacco, and specifically relates to a method for preventing and curing root knot nematode disease of mixed tobacco. Background technique [0002] Nematode diseases are important diseases that damage plants. There are more than 200 genera and 5000 species of plant nematodes recorded in the world. Tobacco root knot nematode disease is one of the main diseases in tobacco producing countries in the world. The reason is that the pathogen is special. The pathogen is a micro-animal, with strong vitality, rapid reproduction, and a large number of reproduction; second, compared with other pathogens, it lives in the soil, can actively invade, and is very concealed The third is the high cost of prevention and control, while the high-efficiency, low-toxicity, low-residue pesticides (including chemical pesticides and biological pesticides) are very few, and the methods of use are complicated. It is difficult for ordinary...

AI Technical Summary

Problems solved by technology

However, affected by the cultivation environment, planting varieties and continuous cropping obstacles, limited by agricultural measures such as deep plowing and sun-drying, crop rotation and high-residue chemical pesticide measures, coupled with the dynamic changes of nematode species and populations, it is necessary to let the market It is still a problem that requires in-depth research and further improvement in various tobacco leaf producing areas to exert the best effect of various biocontrol agents and further improve the level of comprehensive prevention and control

In view of the fact that tobacco root-knot nematode disease is becoming more and more prominent in the Kunming tobacco-growing area, the control effect is not ideal, and it has a major impact on the tribal yellow maturity of tobacco leaves. The screening test of preparations aims to explore effective measures to ensure the production of green tobacco leaves, to achieve safe and perfect maturity of tobacco leaves, and to increase the income of tobacco farmers, and to seek new breakthroughs

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