1, seed treatment technology
The seeds of Forsythia suspensa should choose plants with strong growth and short branches as mother plants, and single-plant seeds with full fruits and no pests and diseases should be selected according to the characteristics of Forsythia suspensa. Seed selection of Fructus Forsythiae can collect mature fruits in June 5438+1October every year, spread them in the shade, remove the shells after drying in the shade, and mix them with wet sand at the ratio of 1: 3 during storage.
2. Land selection and preparation technology
In order to ensure the growth of forsythia suspensa, we should choose deep and fertile soil to ensure the drainage of the soil. Soil preparation for planting forsythia suspensa should be carried out in autumn, and deep tillage should be carried out before planting, and the tillage depth should reach 25cm. Fertilization should be done well in the process of soil preparation, and phosphorus, potassium fertilizer and urea can be used specifically. When preparing soil, all kinds of sundries should be removed, and the plot should be arranged into ridges with a height of 15cm and a width of 120cm, and the width of the furrow should reach 30cm.
Cultivation management
1. During planting, sowing and pollination should be carried out. Specifically, it is necessary to maintain good line spacing. Generally, the row spacing should reach 2m, and the plant spacing should be kept at1.5m. Tall plants and short plants should be planted together, and mixed between plants or rows.
2. In terms of fertilizer and water management, it is necessary to effectively prevent waterlogging, apply fertilizer reasonably according to the growth, and use phosphoric acid and ammonium fertilizer during the growth of forsythia suspensa.
3. In order to improve the fruit setting rate of forsythia suspensa, the method of spraying boron at flowering stage and controlling the dosage of various drugs were adopted to effectively prevent the problem of pesticide residues.
4. Strengthen the plastic pruning of flowering period, specifically pruning young trees and adult trees. When the plant grows to 1m, cut off the top and leave four stout branches on the trunk.