In recent years, aquatic vegetables like Chinese wolfberry have seen rapid development. Many free-flowing floodplains, shallow ponds, and low-lying fields have been transformed into wild plantations, where white crops have become an effective way for farmers to boost their income. However, most farmers tend to neglect proper management, especially when it comes to post-harvest care. In Putian, the winter planting fields are expected to experience mild pest and disease issues next year, with uniform crop emergence, plenty of tillers, strong seedlings, fewer gray or male plants, and ultimately higher yield and better quality.
After clearing the white fields in Putian, it's essential to promptly remove the ash and maggot plants from the field. Old leaves on the quayside should also be cut and burned together. This helps reduce the number of overwintering pests and diseases, while also ensuring that the buds are neatly trimmed, leading to thicker new seedlings the following year.
Once the plants are harvested and dried, they enter a dormant phase. During this time, nutrients from the above-ground parts gradually move to the underground rhizomes. To support the growth of winter shoots, the soil needs sufficient oxygen. Therefore, after harvesting, the field should be dried out, and once fine cracks appear on the surface, it should be re-watered. Rehydration should take place before frost sets in, maintaining a water level of 2 to 3 centimeters. By December, the water level can be increased to 7 to 10 centimeters to protect the rhizomes during winter. When the weather turns clear in early March, the water level should be lowered back to 2 to 3 centimeters.
During the period between the cold season and the beginning of spring, scientific fertilization is crucial. Applying 4,000 kg of well-rotted livestock manure per acre ensures the fleshy stems remain tender and not stiff. The base fertilizer should not be applied later than the start of March. Once the plants reach about 20 cm in height, combining weeding with fertilization by applying 25–30 kg of urea per mu or 40–50 kg of ammonium bicarbonate will help promote the growth of new shoots.
In late winter and early spring, it's important to check the seedlings and supplement any missing ones. As the old seedlings begin to sprout, any areas without piers should be filled with new seedlings. If there are too many sprouts on the old piers, excess ones should be removed, along with weak or unhealthy seedlings to ensure the overall health and productivity of the crop.
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