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Green Prevention and Control of Tobacco Pests and Diseases Begins in Winter
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Green Prevention and Control of Tobacco Pests and Diseases Begins in Winter

(Summary description)Green prevention and control is a systematic work, which needs to arrange various prevention and control measures from the perspective of the whole growth period and the whole year. When the tobacco l

Green Prevention and Control of Tobacco Pests and Diseases Begins in Winter

(Summary description)Green prevention and control is a systematic work, which needs to arrange various prevention and control measures from the perspective of the whole growth period and the whole year. When the tobacco l

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Green prevention and control is a systematic work, which needs to arrange various prevention and control measures from the perspective of the whole growth period and the whole year. When the tobacco leaf harvest is over, it means the beginning of a new round of green prevention and control.

 

Taking 7 measures in winter and spring can effectively reduce the source of diseases and insects in the field, create a good environment for tobacco plant growth, and reduce the occurrence of tobacco pests and diseases. 

1. Remove disease sources such as sick bodies and residues

 

The tobacco residues and weeds in the field are the hiding places for germs and pests, and the sources of the spread of pests. Therefore, after the tobacco leaves are harvested, the tobacco rods should be pulled out in time, the fallen leaves and weeds should be cleaned up, and removed to the field for centralized treatment. The earlier the removal of tobacco plant residues, the better, and it is better to proceed immediately after the tobacco leaves are picked.

 

Do not leave tobacco stems, tobacco roots, and tobacco branches in the field or use them as fertilizer. It is also not allowed to leave tobacco rods and discarded leaves in the fields, water ditches, and mountains to allow them to rot, so that the tobacco-stained water can flow back into the fields. 

 

At the same time, clean up tobacco leaf debris inside and outside the curing barn, and tobacco plant residues in front of and behind the house, and destroy them in a centralized manner to reduce wintering sites for pests and diseases, so as to reduce the hidden dangers of pests and diseases to tobacco production in the coming year. 

2. Deep ploughing and sun drying to eliminate diseases

 

The soil is a wintering place for many diseases and insects. After the tobacco leaves are harvested, 25-35 cm deep ploughing and deep plowing and drying are carried out in time. This can disrupt the living environment and overwintering conditions that destroy the pests and weeds, and effectively reduce their harm.

Through deep ploughing and deep plowing, the germs, pests or weeds in the topsoil and their seeds can be buried in the deeper soil, resulting in anoxic death. It is also possible to plow deep harmful organisms to the surface of the soil, especially the eggs of cutworms, golden needle insects, tobacco budworms, etc., which die due to sun, freezing or drying.

3. Remove waste and reduce pollution

Pick up the residual film, pesticide packaging, plastic bags, fertilizer bags and other wastes out of the farmland and treat them in a centralized manner to avoid polluting the farmland ecological environment.

Agricultural film, plastic bags and other materials cannot be decomposed naturally. They remain in the ground for a long time, which will change the physical properties of the soil, increase the difficulty of farming, reduce the capacity of water and fertilizer, and affect the growth of tobacco.

 

There are various pesticide residues on the pesticide bottles (bags), which are littered everywhere and washed by rain. Residual pesticides flow into the land and rivers with the water, polluting the land and water sources.

4. Soil conservation increases resistance

Through deep ploughing, combined with planting green manure, returning straw to the field, and increasing organic fertilizers, the soil structure can be improved, soil fertility can be improved, soil water retention capacity can be enhanced, and soil nutrient availability can be improved, which is conducive to early growth of tobacco plants. Enhance resistance and reduce pests and diseases.

Planting oats, barley, rapeseed, radish and other green manures to improve the soil and create a good ecological environment for tobacco production.

5. Reasonable crop rotation to reduce diseases

 

When planning tobacco fields, avoid severely ill areas in previous years. Planting potatoes, tomatoes, eggplants, peppers and other solanaceous crops is strictly prohibited in the front stubble and adjacent crop fields.

Preferably sesame, sweet potato and other crops suitable for tobacco planting. In principle, stubble should not exceed two years to reduce the occurrence of diseases. Corn stubble and peanut stubble planting tobacco are not recommended.

In particular, we must pay attention to the problem of corn stubble, avoid external application of chlorinated fertilizers and high-residue pesticides, and prevent excessive nitrogen fertilizer from forming "big and thick" tobacco leaves, causing excessive chloride ions in tobacco leaves and lowering the quality of tobacco leaves.

Attach great importance to the issue of pesticide residues, and prevent pesticide residues from exceeding the scale and contiguous concentration.

For fields with serious soil-borne diseases such as root-knot nematode disease, root rot, and black shank, in order to avoid losses, resolutely no longer grow tobacco. 

6. Improve facilities to eliminate diseases

Tobacco soil humidity is closely related to the occurrence of diseases. Excessive humidity (water accumulation, or waterlogging) is conducive to root rot and black shank disease, and low humidity (drought) is conducive to root knot nematode disease.

 

In winter and spring, clean and dredge irrigation and drainage facilities to ensure that tobacco fields can be irrigated during dry periods and can be discharged in time when water is accumulated, creating unfavorable conditions for disease and reducing disease. 

7. Use the Frequency-vibration Insecticidal Lamp to trap and kill pests 

 

Use Jiaduo Frequency-vibration Insecticidal Lamp to trap and kill noctuid pests such as Prodenia litura, cutworm, cotton bollworm, tobacco caterpillar, etc. at the end of March every year. Jiaduo Solar Frequency-vibration Insecticidal Lamp is composed of solar panels, batteries, frequency-vibration insecticidal lamp tube, control system, frequency-vibration insecticidal grid, starting system, high-frequency trigger and insect-collecting bag. The Solar Frequency-vibration Insecticidal Lamp converts solar energy into electricity during the day and stores it in a maintenance-free energy storage battery; at night, the system automatic control device automatically turns on the frequency-vibration high-voltage insecticidal power grid and the frequency-vibration insecticidal lamp tube according to the brightness of the light to work. Use waves at long distances and light sources at close distances, coupled with specific colors and odors to attract adult tobacco pests to swat the lights, and equipped with a high-voltage power grid to touch and kill the pests, so that the adult pests below the tobacco fall into the insect-collecting bag under the lamp, in order to achieve the purpose of trapping a large number of adults and reduce the rate of egg drop, and then controlling their reproduction. The Insecticidal Lamp can trap and kill a wide range of pests, involving more than 1287 species pests in 13 orders, including Lepidoptera, Coleoptera, Orthoptera, Hemiptera, Homoptera, Hymenoptera, Diptera, Wideptera, Trichoptera, Dermoptera, Blattella, etc. The number of pests trapped and killed by using the Insecticidal Lamp is generally 2 to 5 times that of the Black Light Lamp.

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