First, Shi Dong Fei's time should be carried out when the top of the lily grows to stop growing and then wither.
Second, fertilization should be dominated by organic fertilizer. After entering winter, the root absorption capacity is greatly weakened, and the organic nutrients are decomposed slowly. The application of organic fertilizer is conducive to the long-term absorption of day lily, and provides adequate nutrition for spring seedlings. .
Third, the amount of fertilization must be sufficient for winter fertilizer, it should be based on the soil fertility and the type of fertilizer, generally per acre applied to fermented pig cow manure 1500 to 2000 kilograms, or more than 1,000 kilograms of human waste, or 40 to 60 kilograms of cake fat , Or high-quality compost 2000 ~ 2500 kg, and with a suitable amount of phosphate fertilizer.
The fourth is to pay attention to fertilization method can be between the cluster distance, but also between the rows, 10 cm away from the cluster, open width 15 to 20 cm, 15 cm deep fertilization points (manure, fertilizer points should be deepened and relaxed), Carry out deep application and cover soil after application to increase fertilizer efficiency.
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