Highlights of cultivation techniques of gladiolus:
1. Soil preparation for soil preparation and fertilization of gladiolus should be carried out with sandy loam. The soil layer should be deep, loose and well drained. Made of 20 cm high and 1 m to 1.5 m high. Fertilization should take care of both NPK. Since gladiolus is a shallow root plant, the fertilizer should be applied shallowly. The top dressing is applied in two true leaf stage (after flower bud differentiation) and the heading stage, and the thin manure water plus urea is applied once. The potassium fertilizer is reapplied once in the middle stage, and the nitrogen is controlled at the later stage to prevent the plant from growing and causing lodging. The plots for the production of bulbs should be based on the addition of potash.
2. Selection and treatment of bulbs After the cultivars are identified, attention should be paid to the selection of bulbs. When selecting, the species should not be mixed, and the bulbs without pests and buds should be selected. Before planting, the graded bulbs should be immersed in water for 15 minutes, then immersed in 0.1% mercury or formalin 80 times for half an hour. After being taken out, rinse them off and then plant them.
3. Planting time is generally carried out under natural conditions from April to May, and at a ground temperature of about 10C. If annual production is to be carried out, it should be determined according to different flowering periods. Under the conditions of guaranteed temperature and illumination, it is required to be listed before the New Year's Day. It should be planted in early September. It can be planted at the end of September during the Spring Festival. The early spring supply of cut flowers can be planted from late November to late December. Flowering from late May to early June can be germinated in early February and planted in early April. The flowering of the National Day can be planted from early June to mid July.
4. Break the eyeball stem for continuous sleep for about 3 months under low temperature conditions. If it needs to be planted in advance, it can be treated with 35 °C high temperature for 15-20 days, then with 2C ~ 3 C low temperature treatment for 20 days to break the sleep. . However, during this period, the bulbs should be kept dry, and the humidity is too large, which may cause the bulbs to rot.
5. Planting specifications vary with plant type, 20 cm square for large plant type, 10 cm to 15 cm square for small and medium plant type. The planting depth is generally 3 cm to 10 cm. In order to prevent lodging, two layers of 20 cm square nylon mesh were placed on the planting bed in advance when planting the bulbs. Later, as the plant grows taller, the layers are stretched with the pillars to prevent the plants from lodging and the stems bent.
6. Flower harvesting and bulb storage The calyx of the gladiolus is suitable for the first flower when it is first opened. When cutting flowers, leave the plant with 3 green leaves at the base, let the bulbs continue to expand. Usually cut flowers every afternoon, according to the variety, 10 bundles of packaging into the box. It is better to dig the bulbs at about 1/3 of the apex of the leaves. After the excavation, the leaves are cut off and the bulbs are dried for several hours. After the outer skin is dried, it is transferred to the room. The new ball and the sub-ball are graded into a shallow box, placed in a dry, ventilated, and stored at a temperature of 5 C to ll C. During the period, the flipping is checked to prevent heat and mildew.
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