Horn daffodils

horn daffodils, also known as yellow daffodils, belong to the stone garlic perennian ball root flowers. Compared with Chinese daffodils, it has the characteristics of large flowers and bright colors, and has strong resistance to low temperature. Dew cultivation in East China, or in plastic sheds to promote cultivation, sometimes flowering in winter, is the Spring Festival better potted and cut flowers, well-loved by people. In recent years, the cultivation application has increased year by year.Ecological habits and flowering regulation:horn daffodils are more resistant to yin, but also have a better ability to resist drought and barren thin. It is widely planted in France, Portugal and other places of origin in central Europe. For the autumn ball root, there is a certain degree of resistance to low temperature, in east China can be dewy cultivation, but not resistant to high temperature, in the summer high temperature, must also go through the low temperature spring process. The sleep period is longer, the springing process is also longer, and the requirements are high. In promoting cultivation, if encountering a high temperature of 30 degrees C, it will lead to differentiation and affect flowering. Therefore, in order to prevent differentiation, plants are planted from late September to early October. After planting from September to October, the roots of the ball continue to grow leaves and roots, and the growth slows down after winter. After the temperature warms up in early spring, the leaves grow rapidly, and after growing 3-5 leaves, the flowers are drawnfrom the leaves, and the stems are almost equal to the leaves. After flowering, the underground ball begins to develop, and by June-July the ground partially dies and the plant goes into hibernation. The bud differentiation of the new ball began around late April and was completed before hibernation. After the June-7 moon roots are excavated, they can be used to promote cultivation at a certain high temperature and can bloom as early as the end of November. The typical flowering period for cultivation is from December to March of the following year. To promote cultivation, we should first refrigerate spring treatment. Refrigeration treatment for more than 5 weeks at 8 degrees C-10 degrees C is most effective in promoting flowering. The longer the spring processing time, the more it can promote flowering. However, because of the long springing time, will make the shape of the plant smaller, refrigeration time is too long, will also make the flowers smaller. Generally refrigerated at 8 oC for 5 to 8 weeks, plant growth will not produce abnormalities. The effect is better if stored at a temperature of 15 degrees C-18 degrees C before refrigeration treatment. Spring treatment should be dry refrigeration, in the refrigeration process do not replenish water. Low-temperature treatment of the ball, after the plant if the temperature of 25 degrees C, will seriously affect the effect of spring. As a result, plantings are generally scheduled in October. If planted in September, you must find a cool place or cool down on a sunny day. Usually in early August, the ball is placed in a cold storage of 8 degrees C, treated for 8 weeks, can flower in November; Processed in early September, planted at the end of October, flowered in february of the following year, processed in mid-to-late September, planted in early November, flowered in March of the following year, not processed, planted in October-November, and flowered in March-April of the following year. The above time for public reference, all places must also be in accordance with local climatic conditions, do a year after a small test, before large-scale promotion and application.Variety:several variants of the trumpet daffodils: the big flower horn daffodils (var. Major), the flowers are particularly large; bicolor), the flowers are white, the crown yellow; Johntonii), with smaller plants and shorter co-crowns; Planus), the flower's co-crown and female and male all petal, and daffodils in a very different form, the flower is very large, about 7 cm in diameter. In addition can be used as cut flower cultivation species are: N. poticus, leaves slightly white powder, flowers 2 prisms, double leaf slightly higher, side corolla light cup, orange red;Breeding and cultivation:(1) reproduction is mainly sub-ball reproduction. In May and June leaves yellow, into the sleep stage, the root of the ball in time to dig up, after finishing and drying, stored in a cooler place. When planting, the mother ball on both sides of the small bulbs under the plant ball, planted separately. In order to speed up reproduction, it should be shallow and not deep when planting the mother ball. Too deep, the number of sub-balls that occur is small. (1) In the cultivation of horn daffodils, there is a period of time to be spent in the protected area. In the early stages of planting and when flowering, it is better to dewy land. Therefore, it is not appropriate to cultivate in a fixed greenhouse. Planting early because of the high temperature at noon, easy to cause differentiation, late October after the temperature drop can cover the film insulation, but on a sunny day must be defilmed to cool the air. If the cold climate, the temperature is too low, with double film insulation, if the translation is slow and need to be provided in a short period of time, can be warmed to 8 degrees C-10 degrees C, if the temperature rises in flowering, the plastic shed film should be removed. The bed is usually made to be 1.8 meters wide, that is, 6 meters wide shed to make 3 shoves, leaving a ditch of about 20 cm between each. Planting density: 12 cm × 12 cm or 10 cm × 12 cm. The mulum is about 7 cm thick. Fully fill the water immediately after planting. In the long-term, to keep the soil moist, to prevent water accumulation. Due to the high temperature at the time of planting, the sun must be shaded; When the night temperature drops to 1 degree C-3 degrees C, it is necessary to keep warm with a double-layer film or a land heat of 5 degrees C-8 degrees C. In order to make the stem solid, control the irrigation volume, but not over-drying.Cut flowers cut and preservation:this variety of cut flowers are very sensitive to squeeze, easy to reduce quality after squeezing, so should be cut early in the buds, that is, 2 days before the flowers bloom - 3 days to cut. After cutting grading, packaging on the market. Daffodils have a long natural shelf life, with bottle life varying according to the season, between 2 and 4 weeks. The most effective preservatives are 30g-70g sugar and 30mg-60mg of silver salt per litre of water.