1. Selection of varieties: The Jingongsheng series of varieties with good comprehensive traits are selected.
2. Preparation of plots: Choose sandy loam soil with fertile soil, flat terrain and good irrigation and drainage. If the soil is too sandy or too viscous, manure, compost, peat, humus and other improved soils can be used. In autumn and winter, the land was deeply turned once, which promoted soil weathering and organic matter decomposition and reduced the number of disease and insect bases. In the end of March, the basal fertiliser was applied, deep-turned 25 centimeters, and the fine soil preparation was done. After the leveling, the sorghum was made to be 70-80 cm wide, 20-25 cm high, and 30 cm wide and 40 cm deep.
3, timely planting: in May in the greenhouse cut seedlings. Colonization in June, spacing 45 cm, spacing 35 cm, planting 3500-3800 per acre. Planting should not be too deep. Take 3-4 cm. Implant water once after planting. Two to three weeks after planting, the plants had 3-5 leaves when they had 5-7 leaves, and 2-3 leaves when the lateral branches had 4-5 leaves after 3-4 weeks. Take a tie at the side of the cable or a vertical bar tied to cultivate. Pay attention to prevent rain when flowering, it is best to build a temporary shelter in the chrysanthemum bud. When the temperature is high and the humidity is high, proper ventilation is required.
4, fertilizer and water management: Shizujifei, mainly organic fertilizer, applied per acre maturity of fertilizer 2000-2500 kg or cake fertilizer 100 kg, deep and mix with the soil. 5-7 Months of cooked and diluted manure water 3-5 times. The first time after chrysanthemums were planted and poured, each time after picking the heart, it was poured one time. Each time, 100-150 kilograms of human excreta were poured with water, and 0.3 kilograms of urea was added per 100 kilograms of human waste. From the end of August to the beginning of September, when the buds of chrysanthemum are planted, 1,000 kg of cow manure or 25 kg of NPK fertilizer is applied per mu. In October, spray 0.2-0.3% potassium dihydrogen phosphate solution once budding. The water management in the early growth stage is dominated by dry see-saw in the soil. With the growth of the plant, the amount of watering is controlled appropriately, and the water content is controlled as much as possible during the flower bud differentiation period. The plant leaves are not wilting or watering. When side buds or young buds are seen in the plants, the amount of watering should be appropriately increased to prevent water shortage. The number of watering and watering depends on the circumstances. Can not be flooded with water, so as to avoid excessive humidity in the soil, resulting in the death of the plant suffocation. After the watering, the cultivating and weeding are performed in time to prevent soil compaction.
5, pest control: the main pests and diseases are leaf spot, downy mildew, rust and locusts, longhorn and so on. Use 50% carbendazim WP 800 times to control leaf spot, use 40% ethyphosphine aluminum WP 250-300 times or 25% metalaxyl wettable powder 600-800 times to control downy mildew, With 15% triadimefon 1000 times or 25% Triadin wettable powder 1500 times to prevent rust. The control of chrysanthemum longiflorum was sprayed with 40 ml of Tianhe Baishu (5.7% beta-cyfluthrin EC) per acre in appropriate amount of water per mu. The control of aphids is sprayed with 10% imidacloprid WP 2000-4000 times or 0.65% linguinin water 300-400 times in the locust occurrence period.
6. Harvesting: When 70% flowers bloom in mid-to-late October, sunny dew is selected for dry harvesting, and harvested every 6-7 days until the end of November. The collected flowers are placed in a graded manner, removing mud flowers and pest flowers without entraining sundries.
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