There are many diseases in the seedbed, and there are common diseases such as rickets, blight, gray mold, anthracnose, blight, etc. The prevention and treatment methods are as follows:
First, the seed disinfection with 55 degrees of warm water soaking for 15 minutes, can kill the bacteria attached to the surface of the seed, while playing a germination role. For rickets, tomato early blight, and eggplant brown streak, soak for 10 to 15 minutes with formalin 100 times, then rinse with water, dry and sown. For anthracnose, it can be soaked in 100 times of copper sulfate for 5 minutes.
Second, bed soil disinfection with 70% pentachloronitrobenzene powder and 65% Daisen zinc wettable powder or Fumei double wettable powder mixed in equal amount, 8-9 grams per square meter seedbed, and then with 15 kg of dry fine soil Mix well and place the soil and cover soil. It can also be mixed with 70% dikesone per square meter and doubled fine soil and then sprinkled in the seedbed. If the bed soil is relatively dry, it can be used 200-400 times of sensation zinc ammonium, and 2-4 kg per square meter of bed soil, which can be disinfected and can play the role of moist bed soil.
Third, the temperature of the nursery bed is required to maintain 30 degrees before emergence and 20-25 degrees after emergence. On sunny days, the temperature is controlled by 25 degrees, the cloudy day is 16 degrees, and the nighttime is 7-10 degrees lower than the daytime. The bottom water is poured into the wet topsoil by 10~13 cm, so that it is wet during the day and dry at night, wet on sunny days and dry on cloudy days. After the seedlings are unearthed, they must be reheated by low temperature and controlled watering. 7 days before planting and transplanting, open-air refining is carried out at night without wind and rain.
Fourth, timely use of the drug every 10-15 days, with 65% of zinc sulphate 600-800 times spray once, can also be used alternately with 50% dexamethasone and 70% thiophanate 1000 times. When there are individual diseased plants in the seedbed, the diseased plants should be removed immediately and sprayed in time to prevent the spread of the disease.
First, the seed disinfection with 55 degrees of warm water soaking for 15 minutes, can kill the bacteria attached to the surface of the seed, while playing a germination role. For rickets, tomato early blight, and eggplant brown streak, soak for 10 to 15 minutes with formalin 100 times, then rinse with water, dry and sown. For anthracnose, it can be soaked in 100 times of copper sulfate for 5 minutes.
Second, bed soil disinfection with 70% pentachloronitrobenzene powder and 65% Daisen zinc wettable powder or Fumei double wettable powder mixed in equal amount, 8-9 grams per square meter seedbed, and then with 15 kg of dry fine soil Mix well and place the soil and cover soil. It can also be mixed with 70% dikesone per square meter and doubled fine soil and then sprinkled in the seedbed. If the bed soil is relatively dry, it can be used 200-400 times of sensation zinc ammonium, and 2-4 kg per square meter of bed soil, which can be disinfected and can play the role of moist bed soil.
Third, the temperature of the nursery bed is required to maintain 30 degrees before emergence and 20-25 degrees after emergence. On sunny days, the temperature is controlled by 25 degrees, the cloudy day is 16 degrees, and the nighttime is 7-10 degrees lower than the daytime. The bottom water is poured into the wet topsoil by 10~13 cm, so that it is wet during the day and dry at night, wet on sunny days and dry on cloudy days. After the seedlings are unearthed, they must be reheated by low temperature and controlled watering. 7 days before planting and transplanting, open-air refining is carried out at night without wind and rain.
Fourth, timely use of the drug every 10-15 days, with 65% of zinc sulphate 600-800 times spray once, can also be used alternately with 50% dexamethasone and 70% thiophanate 1000 times. When there are individual diseased plants in the seedbed, the diseased plants should be removed immediately and sprayed in time to prevent the spread of the disease.
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