Nocturnal flower cultivation and management techniques

The night-scented flower, also known as a semi-wild vegetable, is primarily consumed for its flower buds. Traditionally, it was cultivated in front of homes, but since the mid-1980s, it has evolved into a commercial crop. Its produce is now sold in major cities within the province, as well as in Hong Kong and Macao, offering excellent economic returns. Below are the detailed cultivation techniques for this valuable plant. First, seedling cultivation is essential. Select mature vines about 60 cm long and cut them into sections of 8–10 cm. Place each section at a 45-degree angle on the soil surface, spacing them about 10 cm apart. Cover two-thirds of the stem with soil, then add a layer of dry weeds on top. Water thoroughly and keep the soil moist until roots develop. Transplant the seedlings in spring once the roots have grown sufficiently. Second, prepare the soil carefully. Night-scented flowers are drought-tolerant and thrive in well-drained fields. Choose low-lying areas with good drainage and ensure deep tilling. Apply organic fertilizer as a base before planting. The ridge height should be around 30 cm, with a spacing of 1.5 meters between ridges and 70 cm between plants. Plant in spring or summer by making small holes in the soil, placing the seedlings diagonally, and covering them with soil. Add a layer of dry weeds and water the area. Third, field management includes vine training and pruning. When the seedlings reach about 1 meter in length, start guiding the vines upward using structures like poles and wires. Keep the height under 2 meters to make harvesting easier. Remove excess branches and leave only strong side shoots above 50 cm. After the harvest season, perform a major pruning to remove dead or weak vines and leaves, leaving only healthy branches. You can also grow short-term crops on either side of the field during winter. Fourth, fertilization is crucial. In early March, apply 25 kg of compound fertilizer mixed with 500–750 kg of farmyard manure per acre to promote early growth. Every 20–30 days, apply 15 kg of compound fertilizer or 500 kg of manure. Avoid using nitrogen-rich fertilizers. During dry spells in spring, ensure adequate watering to stimulate new growth. In rainy seasons, focus on drainage to prevent waterlogging. Fifth, pest control is necessary to maintain plant health. Common pests include crickets and scale insects, while wilt disease is a significant concern. Preventive measures include avoiding excessive nitrogen, removing dense foliage, ensuring proper drainage, and weeding regularly. Adding lime during top dressing can help reduce disease risk. For pest control, use products like Pest Control, Anti-Caries 23, and Farmland Music to manage fleas, and 40% Leko Emulsion for scale insects. For fusarium wilt, apply fungicides and immediately remove infected plants. Burn the diseased plants and sprinkle quicklime around the affected area. Replant after one month. Finally, harvesting occurs from early April through mid-October. The flowers form umbrella-like clusters of small blooms, with a light yellow color and a strong fragrance, especially at night. Once the inflorescence reaches 40–50% bloom, it's time to pick. Harvest daily and sell fresh on the same day. Remove any open flowers to maintain quality. On average, the yield is 1,250–1,750 kg per mu, generating 7,000–8,000 yuan per mu. This makes the night-scented flower not only a unique crop but also a profitable agricultural option.

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