Detailed Explanation of Field Management Techniques for Baby Napa Cabbage
Baby napa cabbage has a relatively short growth cycle, generally maturing 45-55 days after planting. In addition, it can be planted all year round, so it can be brought to market in large quantities in a very short time. So how should baby napa cabbage be managed after sowing? Let's take a look at the detailed introduction below.
1. Temperature management
Generally, seedlings emerge 4-5 days after sowing. After the seedlings emerge, film should be applied in time to ensure sufficient temperature for growth. However, if it is planted in a greenhouse, there is no need to apply film. But pay attention to the temperature difference between day and night, which should preferably not exceed 13 degrees. During the day, ventilation should be strengthened to lower the temperature in the shed and reduce fertilizer application, so as to reduce the occurrence of diseases. When planting in a small arched shed, as the temperature rises, ventilation openings should be increased. When the low temperature drops to around ten-plus degrees, the film can be removed. At the same time, combined with intertillage and weeding, raise the soil temperature and promote root growth.
2. Water management
The root system of baby napa cabbage is not well developed, and its rhizome is relatively small. Therefore, during planting, the soil must be kept sufficiently moist to ensure its normal growth and development. When baby napa cabbage enters the heading stage, this is the period when its water demand is greatest, and it is also a period when the temperature is too high. High temperature and high humidity can easily breed diseases. Therefore, when watering, the amount should be controlled well to avoid excessive humidity at the roots causing rotten hearts. If it rains, drain water in time to reduce humidity.
3. Fertilizer management
Because the growth cycle of baby napa cabbage is relatively short, the soil must have sufficient fertility to support its growth. When planting, base fertilizer should be applied in combination with land preparation, mainly organic fertilizer. When the base fertilizer is insufficient, in order to prevent the plants from stopping growth due to lack of fertilizer, a small amount of manure water fertilizer can be applied at this time. In addition, topdressing should be carried out during the three periods of baby napa cabbage: the rosette stage, the early heading stage, and the middle heading stage, so as to ensure the normal growth of baby napa cabbage.
4. Intertillage and weeding
Weeding work will be carried out during land preparation, but weeds cannot be completely eliminated. As baby napa cabbage grows, a large number of weeds will grow again in the field. These weeds compete with baby napa cabbage for water and fertilizer, and also provide a good habitat for pests and diseases, resulting in poor ventilation and air permeability in the field and making pest and disease damage more likely. Therefore, weed frequently. Manual pulling of weeds is recommended. If the planting area is too large, pay attention to the concentration and operation method when using pesticides, so as to avoid phytotoxicity to baby napa cabbage.
The above is an introduction to the field management techniques for baby napa cabbage. I hope it can help you. To learn more related knowledge, please stay tuned to us.