Chrysanthemum is suitable for wet and cold climate, with short plants and rapid growth. Generally, it can be picked 30~35 days after planting. Because of its short growth period and rapid growth and development, it has a large demand for water and nutrients. Chrysanthemum is a leafy green plant with young leaves and stems. Fertilization should be based on base fertilizer and promoted with phosphorus and potassium fertilizer.

According to my own planting experience, I think the following aspects are the key to ploughing and fertilization: before farmland 1 mu compost organic fertilizer 1000Kg phosphorus and potassium fertilizer 30Kg, grass ash 100Kg, urea solution 100 kg as base fertilizer, and planting method: when the soil moisture is good or the bottom moisture is sufficient (early Compared with sowing, the yield of hole sowing will be better Because hole sowing has good natural ventilation and light transmittance, it can reduce diseases and insect pests such as leaf blight and downy mildew of chrysanthemum, and then make chrysanthemum

Reduce pests and diseases and improve benefits. After planting for about 20 days, four leaves will appear, which can be replanted moderately. The seedling spacing can be kept at 3-4 cm. You can't get too close. If you get too close, the seedlings can't be effectively ventilated and transparent, which is not conducive to the growth and development of chrysanthemum. If it is far away, it will endanger the upward trend and affect production. In the bud stage of chrysanthemum, the soil layer should be kept moist and not short of water. In addition to timely replanting, we should also solve the problems of spreading chrysanthemum and spraying fertilizer on the leaves. Before and after transplanting, 0.2% potassium dihydrogen phosphate brassinolide can be sprayed on the leaves to make chrysanthemum seedlings grow vigorously. When it is necessary to spray water on chrysanthemums to improve drought resistance,

Downstream topdressing can use quick-acting base fertilizer, 1 mu of urea solution within 2.5~3 kg, and potassium dihydrogen phosphate within 500 g, and apply base fertilizer as little as possible. Generally, after 35-40 days of germination, chrysanthemums can be picked when they grow to 15 cm. Select large plants and pick them in stages and batches. When picking, you don't need to uproot it. Pick some short stems and leaves on it and leave roots 3 cm. It will grow branches, grow and develop again, and harvest the second crop every ten days. Water and fertilize after each seed harvest to accelerate the growth and development of branches. The average yield per mu can reach more than 7500 kilograms.