According to the author's investigation, the actual production of striae spot virus in Shouguang City of our province is as follows: The necrotic tissue on the plant turns brown and necrosed, showing stripe spots, necrotic mottled spots, and ring spots. In particular, on the fruit of sweet peppers, brown streaks and stripe spots that are visibly visible or obvious are observed. When severe occurs, the symptoms appear on the stem shoots or on the shoot shoots below the growth point. Specific prevention methods:
Passivate the virus and stop the spread of the disease:
Seed treatment: Soaking seeds with 10% trisodium phosphate for 20 minutes. Rinse clean before germination. Potassium permanganate is less effective.
When environmental conditions are not suitable for its development, viral diseases have a long incubation period. When environmental conditions are suitable for the development of viral diseases, symptoms are manifested. The environmental conditions of high temperature and drought are conducive to the development of many vegetable virus diseases. When the virus increases exponentially, it accelerates reproduction. It will manifest itself as a symptomatic state with symptoms such as mosaics, striae, and dry tops. Therefore, the reasonable regulation of temperature and humidity in the shed and the creation of environmental conditions that are not conducive to the development of viral diseases can effectively inhibit its occurrence and reproduction.
Therefore, the key technical measures for its production management are:
Temperature control: The suitable temperature for sweet peppers is 25 degrees Celsius during the day, and no higher than 15 degrees Celsius at night. If the temperature is too high, the shade should be increased during the day. The sweet peppers can be shaded all day.
Moisture control: Virus disease is easy to occur, and it is necessary to supplement soil moisture in a timely and balanced manner and ensure a certain degree of air humidity.
Fertilization: Rationally and balancedly supplement various trace fertilizers, especially zinc fertilizer, to promote plant growth and increase its antiviral capacity.
Timely removal of diseased plants: Once the diseased plants are found, if they are sprayed at the early stage of disease prevention and control, if the disease is severe, they should be removed in time and brought out of the field to be buried or burned. To completely eliminate the existence of infectious pathogens.
Cut off the route of transmission:
Kill aphids, whitefly and other poisonous pests. As the temperature rises, pests such as grasshoppers, whiteflies, thrips, and leaves are frequently active, and they can also spread various virus diseases while sucking leaf and fruit juices. Therefore, when locusts, puffer horses, and tea leaves were found to be harmful to the shed, they could be sprayed in the United States with the exception of 1,000 times the amount of Acetyl 2000 times and other chemicals to control the effect is better, or with 10% imidacloprid 2000 times thiazinone ( Fluoxetine 1000 times to kill, you can also use some fumigating insecticide smoked. Seedling can be sprayed or rooted 2500 times Aketai, the effective period of up to 15 days, the effect is very good.
Drug control: At the beginning of the disease, use 20% hydrochloric acid morpholinium copper (viral disease) 500 times, or 7.5% gram aqueous toxin 600 times, or 5% bacillus gram water 300 times, every 3 times Spray once every 4 days, continuous control 3 to 5 times as well.
You can also choose pyrimidomycin 2500 times plus double effect micro-fertilizer mix effect is good.
According to the test results of the relevant technical personnel, the following formula has a good effect on virus control, and vegetable farmers may wish to try it. Should be sprayed in time for prevention and treatment, pharmaceutical ratio programs are: resistance to disease Wei or virus K25 ml plus medical virus Ling 15 plus virus A or antiviral Feng 30 grams plus natural alizarin 2 grams of water to 15 kg of water can be.
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