It's a very professional term for what bacteria or spores infect. Let the professionals study it. You just need to remember that the disease mainly damages leaves, flowers and bulbs.
The root rot obviously refers to the root of the plant, for tulips it refers to the seed ball.
The disease mainly appeared in the seedling stage of tulip, which hindered the growth of tulip seedlings.
Fungal infection mainly damages the bulbs and makes them rot.
Virus refers to a kind of microorganism, mainly showing symptoms such as yellow leaves, dwarf plants, rolled leaves, deformity, etc.
Small white insects, mainly in the bulb storage period.
When planting, choose the soil with good drainage and rich humus. The soil shall be sterilized. Water with diluted disinfectant on a sunny day and dry.
If there are problems in the maintenance process, the basin shall be turned over in time to replace the soil, and the soil that has been breeding bacteria or parasites shall be sterilized or replaced. It is suggested to replace the soil directly, so as not to eradicate the disease.
If the plant is confirmed to be infected with diseases and insect pests, the seed ball shall be removed for sterilization. Pay attention not to damage the root during the process.
Remove the outer hard shell of moldy seed ball and burn it to avoid cross infection.
Disinfect the remaining part, put it into 1000 times acarid solution, soak for 30 minutes, air dry naturally and replant.
The planting density shall be strictly controlled and the ventilation shall not be affected.
After insecticidal daily care to pay attention to timely watering, see dry see wet.
Control the temperature at 15 ~ 20 ℃, and increase the light in time.
Apply fertilizer timely, apply thin nitrogen once a week, and increase the times of fertilization properly before flowering.