Prevention method for tobacco floating tobacco seedling spotted wilt

A technology of spotted wilt and spotted wilt virus, applied in the field of prevention and control of tobacco floating smoke seedling spotted wilt, can solve the problems of devastating loss, single insecticide, susceptibility to tomato spotted wilt virus, etc.

Inactive Publication Date: 2017-04-26
HONGHEZHOU BRANCH OF YUNNAN TOBACCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Tomato spotted wilt virus is mainly transmitted by thrips in nature, and it is an important disease on tobacco, tomato, and pepper. The prevention and control of this type of disease mainly uses insecticides to kill insects. Traditionally, the application of insecticides is often Regular and frequent use of a single insecticide, resulting in overapplication of pesticides, resulting in pesticide contamination
In addition, tobacco is very susceptible to tomato spotted wilt virus during seedling cultivation, causing devastating losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0041] In the range of 30-50 meters around the seedbed, the targeted eradication of Elephant Needle, endive, lettuce, pepper, shepherd's purse, eggplant, gray ash, tomato, pink flower, primrose, chrysanthemum, artemisia, etc., after eradication, use 200g / L Imidacloprid solution 3000-5000 times of solution was sprayed once to kill residual thrips. . Hang blue sticky boards around the seedbed. When the accumulation of 10-20 insects / piece and 30-40 insects / piece on the sticky insect board, spray insecticides (5% acetamiprid EC 2500 times liquid and 0.5% acetamiprid EC) in 2 times around the seedbed. One of the 600 times liquid of matrine water solution), spray 20-30Kg diluted agent per 100 square meters. After entering the seedling management stage, when the accumulation of 10 to 20 insects / piece on the sticky insect board, spray once (2500 times of 5% acetamiprid EC), and the spraying amount is 20 per 100 square meters of seedling trays. ~30Kg dilution agent; regular inspect...

Embodiment 2

[0043] Within 30 to 50 meters around the seedbed, targeted eradication of Elephant Needle, endive, lettuce, pepper, shepherd's purse, eggplant, ash, tomato, pink flower, primrose, chrysanthemum, artemisia, etc., will be released after eradication. The predatory mites were used once, specifically, 1.0-2.0 kg of wheat bran was mixed with 15-20 bottles of predatory mites, and the seeds were spread to a range of 30-50 meters around the seedbed. Hang blue sticky boards around the seedbed. When the accumulation of 10-20 worms / piece and 30-40 worms / piece on the sticky insect board, release the predatory mites 1-2 times. After entering the seedling management stage, when the total number of worms on the sticky insect board reaches 10 to 20 worms / piece, the predatory mites are released 1 to 2 times, and insecticides (5% acetamiprid EC) are sprayed around the seedbed at the same time. 2500 times and one of 600 times of 0.5% matrine water solution), the spraying amount is 10-30Kg dilute...

Embodiment 3

[0045]Within 30 to 50 meters around the seedbed, targeted eradication of ghost needle grass, endive cabbage, lettuce, pepper, shepherd's purse, eggplant, gray cabbage, tomato, pink flowers, primrose, chrysanthemum, artemisia, etc., sprayed after eradication Beauveria bassiana once, specifically, the bacteria powder is diluted with water to prepare a bacteria solution, and each ml of the bacteria solution contains 100 to 200 million spores, and sprayed to a range of 30 to 50 meters around the seedbed. Hang blue sticky boards around the seedbed. When the total number of insects on the sticky insect board reaches 10 to 20 insects / piece and 30 to 40 insects / piece, spray Beauveria bassiana 1 to 2 times. After entering the seedling management stage, when the total number of insects on the sticky insect board reaches 10 to 20 per piece, spray Beauveria bassiana on the seedbed once; at the same time, spray pesticides (5% acetamiprid respectively) around the seedbed. One of 2500 times...

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PUM

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Abstract

The invention discloses a prevention method for tobacco floating tobacco seedling spotted wilt. The prevention method comprises the steps of pretreatment and seedling management and specifically comprises the steps that spotted wilt virus hosts in seedbeds and around the seedbeds are removed, and insects are killed; blue insect sticky plates are hung in the seedbeds, 1-2 blue insect sticky plates are hung in each seedling culture small shed to monitor the dynamic state of virus transmission thrips, and insecticide is sprayed or predatory mites are released or beauveria bassiana and metarrhizium anisopliae are sprayed according to the number of the insect populations on the insect sticky plates; regular inspection or virus sampling detection is conducted, disease seedlings are removed in time when found, and an antiviral combination agent is sprayed; and 3-5 days before transplantation, 1% of tobacco seedlings are subjected to spot check, the seedbed with the disease seedling checked rate of 0.3% or above is eliminated, and systemic insecticide and antiviral inducers are sprayed once in time on qualified seedlings of the other seedbeds with the disease seedling checked rate lower than 0.3%. In the prevention method, accurate insecticide applying, insect killing and disease resistance are conducted according to the transmission characteristics and dynamic states of the thrips and the disease, insecticide usage quantity is small, thus prevention and control cost is reduced, environmental pollution is also relieved, economic benefit is increased effectively, and environment protection is improved effectively.

Description

technical field [0001] The invention belongs to the technical field of plant virus disease prevention and control, and in particular relates to a method for preventing and controlling the spotted wilt of floating tobacco seedlings. Background technique [0002] Tomato spotted wilt virus is mainly transmitted by thrips in nature. It is an important disease on tobacco, tomato and pepper. The prevention and control of this kind of disease is mainly by the use of insecticides. Traditionally, the application of insecticides is often Regular and frequent use of a single pesticide results in overapplication of pesticides, resulting in pesticide contamination. In addition, tobacco is easily infected with tomato spotted wilt virus during the seedling period, resulting in devastating losses. Therefore, it is very necessary to develop a method that can solve the above-mentioned technical problems. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/00
CPCA01G13/00
Inventor 刘春明董家红李宏光吴阔肖俊华陈永对梁兵张洁阙劲松黄坤李兴勇张朋范文彪杨晓琳
Owner HONGHEZHOU BRANCH OF YUNNAN TOBACCO
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