Propagation methods of Primula

Sowing and breeding method

Sowing is a technical difficulty in cultivating primroses, because of its small seeds, short life span, no germination or very low germination rate of aged species every other year. Therefore, timely seed collection is the premise of seed reproduction. The germination duration of the seeds in the same year is generally about 20 days, begins to germinate 7-10 days after sowing, and generally enters the germination peak within 2-3 days from the beginning of germination. Of course, the specific situation of seed germination depends on its species and sowing date. Sowing is the best from mid-late June to early July, and generally begins to germinate after 7-10 days.

Cutting propagation method

Primula is a perennial herb, which can be propagated by cutting. At present, only a few varieties in the low altitude area were propagated by the method of root separation, and the effect of root division was the best in the middle and late August, which did not affect the flowering in the second year, and the plant growth was robust. However, root-splitting propagation will cause damage to the original plants to a certain extent.

After understanding the breeding methods of primroses, let's take a look at the breeding methods of primroses.

Culture methods of primroses 1. Soil:

The pot soil should be cultivated with 2 rotten leaf soil and 1 garden soil, and a small amount of base fertilizer should be applied. This kind of culture soil is loose and fertile, mostly slightly acidic, in order to facilitate root development.

2. Lighting:

Primroses like light, but avoid strong sunlight, summer seedlings should be placed in a cool and ventilated place where scattered light is common. From September, the pot plant can receive more scattered light, and from October, the pot plant can be placed in full light to receive more late autumn light to promote its growth and flower bud differentiation.

3. Temperature:

Primroses like to be warm, slightly cold-resistant, and the suitable growth temperature is about 15 ℃. If the room temperature is kept at 10 ℃ in winter, it can survive the winter above 0 ℃, and the summer temperature can not exceed 30 ℃, so shading and cooling measures should be taken.

4. Watering:

Primroses like a moist environment, but should not be watered too much, basin soil is too wet, will rot the roots. Improper watering in summer will kill the seedlings, so we should pay attention to the amount of water and times of watering in summer. Generally, water should be watered once in the morning and evening every day, and when the weather is especially dry and hot around noon, water should be sprayed to the ground around the plant and basin to increase air humidity and reduce air temperature, creating a cool and humid climate environment to facilitate its growth.

5. Fertilization:

The dilute liquid fertilizer or compound fertilizer combined with nitrogen and phosphorus was applied once 10 days after slow seedling. After the autumn, the weather is gradually cool, and the spring also gradually enters the vigorous growth period. at this time, the management of fertilizer and water should be strengthened, and the rotten thin cake fertilizer liquid should be applied every 7-10 days, and more nitrogen fertilizer should be applied in the early stage to make the branches and leaves fat. at the same time, 0.3% potassium dihydrogen phosphate solution should be sprayed to the leaves every half a month to promote its multi-pregnant buds to blossom until budding.

6. Insect pests:

Primula seedlings are weak and prone to quenching disease, causing seedling decay and death, so attention should be paid to timely spraying control. If the disease has occurred, a small amount of 70% dimethazone powder mixed with 40 times fine sand can be applied to the basin soil, or 800 times liquid can be sprayed on the soil surface, which has a good control effect.

The above is the introduction of primrose breeding methods and culture methods, want to know more, please pay attention to the four Seasons Plant Network!

Culture methods of Primula

Culture time of primroses

Primroses are mostly cultivated by sowing, which is suitable for sowing from June to September. It can be planted at the end of June every year. The temperature is higher in summer, and the survival rate of transplanted seedlings is lower, so it needs to be maintained and managed in a cool place.

The temperature from August to September is not so high, and it is more convenient to breed at this time, but the development period of primroses is shorter, the plant growth is shorter, and the florescence is short. At this time, if unreasonable breeding, it will reduce the ornamental value of primroses. Therefore, it is most appropriate to sow the seeds directly when they are ripe.

Culture skills of Primula

When potted primroses are cultivated, the seeds should be evenly spread with fine sand, and then the surface should be compacted with smooth glass or template, which is beneficial to the nutrient absorption and rooting of the seeds.

The seed is too small, do not cover the soil after sowing, use the soaking method to irrigate, submerge the basin soil into half of the water, wait for the soil in the basin to be wet, place it in a cool place and cover it with glass. It can sprout within two weeks, remove the glass and gradually increase its photosynthesis.

Soil selection of Primula

The pot soil of primrose should choose rotten leaf soil and garden soil and mixed loam with a small amount of base fertilizer. The soil should use a slightly acidic soil with loose and fertile soil and good ventilation and drainage, which is beneficial to the development of the root.

Primroses are transplanted into pots.

When 2-3 true leaves are grown, the pot diameter 7cm is the most suitable to wait for slow seedling and apply rotten liquid fertilizer once a week. One and a half months later, the pot will be replaced by 13-15cm.

Primroses should apply thin liquid fertilizer once a week and keep the soil moist and not too dry; excessive moisture evaporation and absorption of soil in winter will lead to rotting roots, so watering should be reduced.

Primroses are more difficult to pass the summer. If you want to keep them blooming in the coming year, you should make them safe under the month, change the pots after the flowers have faded, and put them in a cool and ventilated place to prevent the sun from blowing and reduce the amount of water. When it is hot and hot, water should be sprinkled to the ground to maintain a certain amount of humidity and wait for maintenance and flowering in the coming year.