Cultivate “strong” celery seedlings and do a good job in seedling management

The celery seedling period is just in the season of high temperature and high rainfall. If the management is not appropriate, it will easily lead to the development of seedlings and the phenomenon of dead seedlings. Last year, a large number of celery seedlings died of decay due to heavy summer rainfall. What should be paid attention to in the management of celery seedlings? Recently, the reporter went to Guihe Village, Datian Town, Shouguang City to learn about the seedling situation of local vegetable farmers.

First, lower the temperature. Celery is a kind of cold crop, the most suitable emergence temperature is between 15 degrees Celsius and 20 degrees Celsius, and the temperature of the seedbed should not exceed 25 degrees Celsius. However, after entering the summer, the outside temperature is generally above 30 degrees Celsius, which is extremely unfavorable for the emergence of celery. Therefore, when the temperature is too high, the vegetable farmers should take measures such as shading and water spraying to reduce the temperature.

Second, carry out the seedlings. When the seedlings of celery grow to have a true leaf, remove those too dense seedlings, diseased seedlings, and weak seedlings. The seedling distance should be adjusted to 2 cm to 3 cm, and the intercropped seedlings will remove the weeds in the field. It can improve the growth environment of celery seedlings and promote the growth of seedlings.

Third, to avoid harm. In summer, there is a lot of rainfall, and there will usually be heavy rain coming. The water that is not well drained is more serious, which is very likely to cause damage. The roots of celery are relatively weak, so it is better to do drainage and flood control work, and build drainage ditch around the seedbed to ensure that the water can be drained without losing the opportunity after the rain.

Fourth, no loss of time to prevent pests and diseases. The summer temperature is high and the rainfall is high. The humidity of the seedbed is relatively large and the temperature is high. It is easy to infect a variety of diseases, such as squatting disease and soft rot. Soft rot is a kind of bacterial disease. The seedlings of infected diseases appear rot and smelly. When the humidity is relatively large, the disease occurs seriously and spreads rapidly. Therefore, the vegetable farmers need to take the opportunity to prevent and control in the early stage, and should spray the protective agent in time. After paying attention to the situation of seedlings, if the disease should be sprayed in time, you can use 70% of the agricultural streptomycin 3000 times, 3% of the zhongshengmycin 1000 times, 33% Potassium porphyrin 800 times and other chemicals control.