The tulip is a perennial bulb herb of the family Liliaceae. In 1997, about 200,000 bulbs of 23 varieties of Dutch tulip were introduced into the plant. The results showed that the tulip had normal growth and development in Shenyang, and flowering was good. It could survive winter safely and had certain resistance. It can be used for planting flower beds and potted flowers to make up for the lack of varieties of flowers in early spring in Shenyang and to enrich varieties of flowers in Shenyang. However, due to the heavy soil in Shenyang, the large-scale planting will cause the degradation of the bulb. Therefore, the soil should be improved in advance, and organic fertilizer should be added to promote the propagation and flowering of the new bulb. First, the biological characteristics of tulips Tulip is native to Central Asia and North Africa, the entire genus is about 150 species of long-day plants. Hi sunny, well-drained, sandy soil rich in humus loose and fertile conditions, avoid alkaline earth and continuous cropping, general autumn planting, the second year after the winter through the underground spring flowering from April to May, cold resistance is extremely strong, winter can be With a low temperature of -35°C, tulips in the open field can naturally bloom in the spring. Tulip plant height 15-60 cm, flower color, flower diameter in the 25-60 cm, mostly single flower, the temperature above 5 °C can grow, grow best at 10 °C -20 °C. The growth and development of tulip in Shenyang region can be divided into three stages: 1 The development period of root system and sub-balloon. 2 bud growth and flowering and fruiting period. 3 Bulb dormancy and differentiation of buds and flower buds. Usually planted in mid-late October, budding in late March of the following year, budding in mid-late April, flowering in late April to early May, bulb and seed maturation in late May to early June, and dormancy in mid-to-late June period. Second, planting and management methods 1. Site preparation and do bed at the end of September to do 25 centimeters deep rake, and then spread a layer of 15 cm thick moist rot leaf soil, and disinfection. In mid-to-late October, the bulbs were planted at a spacing of 15 cm and 15 cm, and then the soil was flush with the ground. After 1 week, water was sprayed to make the soil moist. Water should be adequate to prevent rotten balls. At the beginning of December, tulips have taken root in the underground and entered the hibernation period. Before entering the winter, they are poured with frozen water once again. It is not necessary to adopt any measures to prevent cold afterwards. 2. Fertilize After watering, pour water and fertilize the water once a week and germinate enough to make the fertilizer and water evenly distributed in the soil layer so as to absorb the root system. After the flower stems are drawn out, the cakes are fed with water once a week. Before spraying, 0.5% potassium dihydrogen phosphate is sprayed once. The number of watering after flowering is reduced to keep the soil dry and wet, and the formation and enrichment of new bulbs are promoted. When it is time to prevent spoilage caused by the sprinkler on the leaves. 3. Picking and storage of bulbous roots When the plants are dry in mid-June, the bulbs are planted underground (the bulbs and seeds are fully developed and matured after 10-15 days). When the ball is played, the ball cannot be bumped, then the bulb is allowed to air for a long time in the sun to fully evaporate the surface moisture and kill the bacteria on the surface of the bulb. After classification, the bulb is stored in a cool, ventilated place until it is planted in autumn. China Agricultural Network Editor
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