What are the field management precautions for planting Saposhnikovia divaricata

1. Management before emergence: Before Saposhnikovia divaricata emerges, the soil should be kept moist. If there is drought, water promptly. About 15 days after sowing, seedlings begin to appear, and about 22 days later, full emergence can be achieved. When full emergence is reached, remove the rice straw covering the surface of the seedbed, preferably on a cloudy day or after 3 p.m., to prevent the seedlings from being scorched to death by the sun.

2. Thinning and final thinning: When the seedlings grow to 2 true leaves, they should be thinned, leaving about 5,000 plants per mu. When they grow to 4 true leaves, thin once more where they are too dense.

3. Cultivation and weeding: From sowing to full emergence takes about 22 days. Weed immediately after the seedlings are fully established. Weeding must be done by hand to ensure the production of pollution-free medicinal materials. During the period from emergence to lifting the seedlings, weed 3 to 4 times. Weeds should be removed and removed while small, which helps achieve uniform and strong seedlings.

4. Irrigation: From emergence until before 2 true leaves, the soil below 1 cm of the surface must remain moist. After 3 leaves, do not irrigate unless there is severe drought, so as to ensure the quality of Saposhnikovia divaricata.

5. Topdressing: Combined with thinning, carry out the first topdressing, applying 300 kg of decomposed farmyard manure and 20 kg of potassium sulfate per mu; combined with the second cultivation, apply 25 kg of superphosphate and 500 kg of farmyard manure.

6. Earthing up and removing flower buds: When the seedlings are more than 30 cm tall, earth up around the roots and firm the soil after earthing. Except for plants retained for seed, any flower buds that appear should be removed promptly to promote root development.