Calla is a perennial herb bulb flower of the Araceae family of Araceae. The colored calla flowers used for cut flowers cultivation mainly include red calla lily and yellow calla lily, which is native to South Africa. Cultivation habits are fundamentally different from the common white calla lily, and cultivation is difficult. To this end, the author refers to the experience of advanced cultivation and management in the Netherlands and other countries, combined with the research on the introduction, cultivation and propagation experiments of colored calla lily in recent years. The cultivation techniques are summarized as follows: 1. Selection and treatment of bulbs 1.1 Selection of bulbs For the production of cut flower bulbs, we must choose robust, disease-free, bright color, bud full eyeball. The diameter of the bulb is about 3-5 cm in diameter. The bulb is too small to bloom or bloom. 1.2 Variety selection Balls should be selected for strong resistance to diseases, bright colors, light color changes are not sensitive to light, cut flower production is high, and they have a large proportion of varieties in the market. 1.3 Seed bulbs of colored calla lily treated with gibberellic acid before planting can promote flowering. Increase production of cut flowers. In general, soaking in a gibberellin solution with a concentration of 25-50 mg/kg before planting for 10-15 minutes is too long and the concentration is too large, which easily leads to the production of malformed flowers. 2. The selection of colored calla in the cultivation environment prefers warm, moist and shady environment, and it is not cold tolerant. The optimum temperature during the growth period is 15-24°C during the day, and the nighttime temperature is not lower than 12°C. High temperatures above 30°C can easily cause the prevalence of soft rot. The cultivation environment should be well ventilated and moderately shaded. The cultivation site should be selected for higher groundwater, with good drainage conditions, rich in organic matter, and suitable for sand with a pH of about 7 and be treated with nitrogen, phosphorus, potassium and a large amount of decomposition. organic fertilizer. 3. Planting bulbs 3.1 Planting time should be based on the needs of cut flowers and bulbs. However, the quality and yield of colored calla flowers grown in the spring are the highest; for the promotion and postponed cultivation, attention should be paid to the flowering treatment of the bulbs and the effective control of the cultivation environment in order to make a profit. Germination is performed before sowing, and sprouts are planted again. 3.2 The planting depth is generally 3-4 cm. The planting depth of the bulb is 10 cm. For a bulb more than 5 cm, the depth is 15 cm. After planting, pour enough water to cover the ground with wheat straw to increase the humidity and reduce the soil temperature, so as to promote germination and rooting of the bulb. 4. Management of Water and Fertilizer Color Calla lily is very important for the management of water in the growing season. The general situation is that it should be wet at the beginning of growth. In the late flowering period, the amount of water should be properly controlled, and the ball should be kept in a dry environment after the flowering period to enrich the bulbs and force dormancy. In the case of applying basal fertiliser, it is sufficient to apply fertilizer as appropriate. Before the flowering, the party uses 1,000 times calcium nitrate and foliar spraying fertilizer 2 times with an interval of 7 days to promote flowering. After flowering, it is necessary to apply compound fertilizer to promote the maturity and maturity of the seed ball. 5. Harvesting of cut flowers and post-harvest treatment. Calla lily flowers need about 60--70 days from sowing to flowering. When picking flowers, the temperature should be lower in the morning or early evening. The method of extraction should be used. For the longer varieties, the cut flowers can also be used. After flowering, 1000 times of agricultural streptomycin can be sprayed and sterilized. Care should be taken when cutting flowers to sterilize cut flowers to avoid virus infection among different plants. For the spent squid should be put into the preservative as soon as possible or immersed in 3-5 °C water, and then packaged for sale. 6. Harvesting and storage of bulbs Colored calla lily is a perennial bulbous flower. After the cut flowers are harvested, the bulbs can be used in the following year. The best time for harvesting the bulbs is after the leaves on the ground are yellow, and the bulbs are first Dig out in the soil and remove the dirt. Do not force the roots to peel off, let them fall off naturally, and put them in a ventilated place. If conditions allow, the dried bulbs should be sterilized and stored in cold storage. The suitable temperature is 8-10°C. The storage can be carried out after 3 months of storage. The storage period uses sulfur to fumigate cold storage every week to reduce the occurrence of diseases. China Agricultural Network Editor