Planting method of Chrysanthemum morifolium

Xishi hometown cormorant cottage door, open a large area of black chrysanthemum, such a beautiful chrysanthemum, just because its flower heart is black, but was called such a name, often when I walk past them, I will complain for these flowers. I even resent the person who chose the name. It is said that phase is born from the heart, this black chrysanthemum is so beautiful, the heart must be beautiful, still blooming enthusiastically in the hot summer, giving us a fragrance and beauty.

I carefully observed the black chrysanthemum, in fact, its flower heart is not black, but purple-brown, the flower heart is raised, the small petals around the golden yellow, and sunflower is very similar, the color of the flower heart is actually very complex, with some faint blue, but also with some green, known as "Irish eyes", that kind of color is very confusing. This flower also has double and semidouble types, but all the ones open here are single.

[method of raising seedlings]

In production, breeding seedlings are commonly used for ramet and tissue culture.

① ramets are usually divided once every three years, and the old plants promoted by greenhouse cultivation are usually dug up and cut from April to May. Each plant has 5 leaves and can be planted separately.

② tissue culture is a method of rapid propagation of seedlings by biotechnology. General growers do not have the conditions for tissue propagation, so they can buy commercial seedlings of tissue culture directly. However, often because these tissue culture seedlings are small, they need to be grown into large seedlings and then planted in the greenhouse. Preparation before planting

① soil preparation: deep digging is needed during soil preparation, and the depth should be above 25cm. Combined with soil preparation, sufficient base fertilizer should be applied, and the appropriate amount of fertilizer should be 200kg per 100m2 circle or 100kg of oil residue plus superphosphate 10kg and 100kg of plant ash.

② soil: the loose and aerated sandy loam should be the best, the PH value should be about 6.5. the excessive alkali should be adjusted properly, otherwise the leaf color will turn yellow and the growth will be weak.

③ ridging: planting ridging in greenhouse is the best. The planting border is in the form of one ridge and one furrow, generally the ridge width is 40cm and the furrow width is 30cm.

[planting method]

Seedlings planted on ridges, double-row staggered planting, plant distance from 25cm, planting should be shallow but not deep, with the root neck exposed to the surface. Planting too deep can easily lead to root rot. After planting, only water is irrigated in the ditch.

[field management]

① temperature and light management: black chrysanthemum likes warm, sunny, well-ventilated cultivation environment. The optimum temperature for plant growth was 20 ℃ 25 ℃, no more than 26 ℃ in daytime and more than 15 ℃ at night. At a suitable temperature, the plant can continue to grow and blossom without dormancy. Winter light should be enhanced due to lack of light, summer light is too strong and appropriate shading, and through shading and cooling, to prevent dormancy caused by high temperature.

② water and fertilizer management of newly planted seedlings should properly control water squatting seedlings, after the seedling stage, adequate water supply to promote growth; flowering irrigation, do not make the center of the leaves drill water, causing flower bud rot. The black-hearted chrysanthemum has large size and many leaves, and consumes a lot of nutrients during its growth period, so it should be replenished in time. The proportion of nitrogen, phosphorus and potassium is about 15:8:25. Especially at the flowering stage, the application rate of phosphorus and potassium fertilizer should be increased: potassium nitrate 0.4kg, ammonium nitrate 0.2kg or ammonium phosphate 0.2kg should be used every 100m2, once every 10 days.

When ③ clears the old leaves too dense, the outer layer of old leaves and diseased leaves should be removed in time to improve the light and ventilation conditions, reduce diseases and insect pests, and be beneficial to the development and growth of new leaves and flower buds, and increase the yield.

The best harvest time for ④ harvest is that the outermost layer of the flower head is vertical to the flower stem. The method is that the flower stem is connected to the leaf cluster and pulled to the side by hand, placed in clean water and bagged to facilitate transportation.

[maintenance method]

Soil: black chrysanthemum has strong adaptability and has no special requirements for soil, but it is suitable for cultivation in loose and fertile sandy loam with drainage and ventilation. Black chrysanthemum is often planted in the ground.

Temperature: the optimum temperature for germination of Chrysanthemum morifolium is 21 ℃-30 ℃. It can be sown in spring, summer and autumn. The suitable temperature for the growth of Chrysanthemum morifolium is 10 ℃-30 ℃, which should not exceed 26 ℃ in daytime and 10-15 ℃ at night. Only at the right temperature can the black chrysanthemum continue to grow and blossom without dormancy.

Lighting: black-hearted chrysanthemum likes sunny growing environment, there should be sufficient light during the growing period, and strong summer light should be given to black-hearted chrysanthemum to cover and cool down, so as not to cause dormancy due to high temperature. In winter, due to low temperature and little sunshine, in order to prevent black chrysanthemum from affecting its growth due to lack of light and low temperature, it should be maintained indoors in the sunny place, and pay attention to heat preservation.

Water and fertilizer: black chrysanthemum does not have strict requirements for fertilizer and water. when it generally grows well, it only needs to give nitrogen, phosphorus and potassium fertilizer to top fertilizer. watering black chrysanthemum needs to grasp the principle of dry and wet, so that the flowers are more beautiful.

Time: 2019-05-25 Click: