Daylily, also known as Hemerocallis, is a traditional Chinese plant with a long history of cultivation. It is valued not only for its ornamental beauty but also for its high nutritional value and various health benefits. Proper fertilization plays a crucial role in ensuring healthy growth and high yields.
First, the base fertilizer application. As a perennial crop, daylily requires careful preparation before planting. Insufficient base fertilizer can lead to delayed growth and lower yields. A recommended practice is to dig planting trenches 30 cm deep, then apply 1,000–1,500 kg of well-rotted pig or cow manure per 667 m², along with 2,000–3,000 kg of compost, pond mud, or field mud. Add over 50 kg of calcium magnesium phosphate, layer it into the trench, and cover with topsoil. Before planting, apply 1,500–2,000 kg of high-quality ash per 667 m², followed by 100–200 kg of diluted human urine or 750–1,000 kg of diluted pig urine as a top dressing. This ensures a balanced supply of nutrients throughout the root zone. It's important to use fully decomposed organic matter, and using a microbial fermenter like Jinbao can help sterilize and eliminate pests, improving soil health.
Second, side dressing during growth stages. Depending on the plant’s development, timely applications of nitrogen, phosphorus, and potassium are essential.
1. Seedling fertilizer (Miao Fei): Apply when seedlings emerge in mid-February. This stage focuses on leaf development, so a mix of nitrogen, phosphorus, and potassium is ideal. Use 100–200 kg of human waste or 10 kg of calcium superphosphate plus 5–10 kg of potassium sulfate per 667 m².
2. Bud fertilizer (Fei Fei): Apply when flower buds begin to form. A combination of fermented human urine and cake fertilizer can boost bud development. The total dose per 667 m² is 12.5–15 kg urea, 10–15 kg superphosphate, and 10–12.5 kg potassium sulfate. Apply less in the first round and more in the second, as the plant enters its reproductive phase.
3. Leaf fertilizer (Lei Fei): Applied around 10 days after harvest begins, this helps maintain leaf health and extend the picking period. Apply 5–12.5 kg urea per 667 m², and consider foliar sprays with 0.5–1% urea, 2% superphosphate, and 0.2–0.3% potassium chloride.
Third, microbial bacterial fertilizer. Products like Jinbao contain beneficial bacteria that fix nitrogen, solubilize phosphorus, and release potassium, along with organic matter and humic acid. These fertilizers improve soil structure, increase microbial activity, and reduce chemical dependency. They can be used at any growth stage. Using microbial fertilizers not only saves on synthetic inputs but also promotes long-term soil fertility. For more details, visit the official website or contact local agricultural experts.
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