2. Generally, 2 ~ 3 plants are buried together. If they are single plants, they should be planted closely. If they are planted on dry land, some leaves should be pruned. At least 3 cuttings are buried in the soil, and 2 ~ 3 cuttings are exposed on the soil surface. The soil is slightly compacted and watered every day to keep the soil moist. Generally, it can survive for 3-4 days.
3. Sowing is usually carried out from April to August, and the optimum temperature for germination is 20 ~ 35℃. When the temperature is low, warm water can be used to accelerate germination. Generally, sowing method is adopted, covering soil 1 ~ 2 cm, and watering to make it permeable. It germinates in about 1 week, during which the soil must be kept moist.
4. When using 3 ~ 5 real leaves, apply thin decomposed organic fertilizer 1 time, mainly nitrogen fertilizer. When there are more than 6 true leaves, it can be managed normally.
5. After picking for 3 ~ 4 times, the plant should be pruned again 1 time, only the base 1 ~ 2 nodes should be kept, and some weak side branches should be thinned.
6, like wet and not afraid of waterlogging, very suitable for hydroponics, drought will affect the taste, in principle, keep the soil moist to promote its germination of more adventitious roots. Potted plants need watering every day; The water depth of hydroponics is about 2 ~ 3 cm after planting. With the increase of growth and temperature, the water depth will gradually increase to about 10 cm, and it will decrease when the temperature is low. If the conditions are limited, it can also be cultivated directly with water, and it will grow well by adding appropriate amount of nitrogen fertilizer to the water.
7, like fertilizer, but also more resistant to fertilizer, it is appropriate to apply sufficient base fertilizer. During the growth period, there are a lot of fertilizers, mainly nitrogen fertilizers, and the fertilization concentration increases with the growth trend. Generally, the decomposed organic fertilizer should be applied every 10 day, or topdressing every 2-3 days after picking 1 time.
8. Harvest: Generally, the seedlings can be harvested when the height is about 25 ~ 35cm. When picking, leave 2 ~ 3 knots at the base and pinch off the tender branches by hand.