Main points of sowing and propagation of Lupin multifoliata

The leafy lupine is very beautiful when it blossoms, and it is very eye-catching by many small flowers gathered together to form an inflorescence. Leafy lupins are often planted in public places or in large areas, with a wide variety of designs and colors, and are loved by many flower friends. Artificial propagation of multi-leaf lupine is generally dominated by sowing.

Big-leaved Lupine

The propagation of Lupin multifoliata is mainly sowing, and it can be sown in spring and autumn. Spring sowing is usually in March, but after spring sowing, because the growing period is in summer, for a long time in the high temperature environment, some seedlings may not blossom or have short spikes after growing up, which may affect the ornamental effect. (potted plants can be moved indoors or maintained in a shady place)

It is better to choose autumn sowing under natural conditions, sowing from September to mid-October, and blossom from April to June of the following year. The suitable temperature for germination is about 25 ℃, which ensures that the soil is moist. The seeds will germinate in less than one or two weeks, and the germination rate is high.

The main points of propagation of lupine

Lupin, also known as Lu Binghua, is also a favorite variety of flower friends because of its rich flowers and colors. The seeds of lupins are larger and can be propagated by sowing and cutting. Xiaobian will introduce the breeding methods of lupins for you in detail.

Lupin

Sowing and propagation were carried out in autumn and germinated neatly under the high temperature of 21 ℃ and 30 min. In the production of lupin, it can be sowed in spring and autumn and sowed in March, but the growth period after spring sowing is in summer, which can lead to some varieties not flowering or low proportion of flowering plants, short flower ears and poor ornamental effect due to the influence of high temperature and heat.

Under natural conditions, autumn sowing blossoms earlier and grows better than spring sowing, sowing in the middle of September to October, and April to June of the following year. 72-hole or 128-hole disk on demand, covered. Seedling soil should be loose and uniform, breathable and water conservation, special seedling soil or peat soil, perlite mixed use is better.

Lupin seeds are larger, common or coated, about 40 / g. The optimum temperature for germination was about 25 ℃, and the medium was moist. The seeds were unearthed and germinated in 7 days and 10 days, and the germination rate was high. (it has been personally tested that it is best to rub the seeds with sand before planting, because the seeds are hard and not easy to sprout, and the seeds can break out of the ground faster after grinding.)

Cutting propagation in spring cutting rhizome sprouting branches, cut into 8-10cm, it is best to bring some rhizome, cutting in the cold bed. In hot and rainy areas in summer, lupin can not die after summer, so it can be used for biennial cultivation. It is suitable to be planted in early spring, plant distance from 40cm, early planting, early flowering and seed setting.

The aboveground part withered after fruiting before summer, and new plants germinated in autumn, or seeds were collected before withering. North China needs protection over the winter.

Propagation and cultivation techniques of Lupin LupinuspolyphyllusLindl, commonly known as Lupin flower, belongs to the genus Lupin of Leguminosae and is native to western North America. Perennial herbs, palmately compound leaves, rich and colorful flowers, and many horticultural varieties. Feather lupin has special plant shape and rich inflorescence color, which is a rare configuration material in garden plant landscaping. It can be used as a flower border background or in the forest edge and riverside planting will give vision a different kind of enjoyment. It has been increasingly accepted and respected by professionals.

Growth habit

Like cool, sunny, avoid hot, slightly resistant to shade. Deep-rooted, few nodules. It is required that the soil layer is deep, fertile and loose, good drainage, acid sandy soil (pH value 5.5), neutral and slightly alkaline soil plant growth is poor.

Mode of reproduction

In the production of lupin, it can be sowed in spring and autumn and sowed in March, but the growing period after spring sowing is in summer, which can lead to low proportion of non-flowering plants, short spikes and poor ornamental effect due to the influence of high temperature and heat. Under natural conditions, autumn sowing blossoms earlier and grows stronger than spring sowing, sowing from September to mid-October, and from April to June of the following year. 72 or 128 hole disk on demand and overlay. Seedling soil should be loose and uniform, breathable and water conservation, special seedling soil or peat soil, perlite mixed use is better. Seeds larger, common or coated, about 40 / g. The suitable temperature for germination is about 25 ℃, the medium is moist, and the seeds are unearthed and germinated in 7 to 10 days.

Cultivation and management

The seedling stage of lupin is 30 to 35 days, and the seedlings are transferred and planted after the true leaves are fully unfolded. The root system of lupin is well developed, and the original soil is retained when transplanting seedlings, which is beneficial to slow down the seedlings. The pot should be changed one or two times according to the growth situation before planting, and the pot should be selected as a high barrel basin, in order to meet the growth needs of taproot roots and determine the reasonable planting density. For autumn sowing, corresponding cold prevention measures should be taken when overwintering, and the temperature should be above 5 ℃ to avoid freezing damage to leaves and affect the vegetative growth and ornamental effect in the early stage.

The lupin is cool, and it belongs to perennials, so special attention should be paid in summer to prevent leaves from yellowing, plant growth and even death caused by high temperature and humidity, sunlight and sun. In the garden application during the flowering period, it can also be planted directly under the forest trees and in a cool and ventilated place to facilitate summer management. After pot viewing, it is necessary to timely cut off the residual ear of flowers and withered leaves, control fertilizer and water, and do a good job of shading protection in high temperature period to ensure safe summer. Regulation of soil pH

According to the growth habits of lupine, it is very important to control and regulate the pH (pH) of the culture medium during cultivation for the normal growth and flowering of lupin. In general, the simple and effective regulation method is to apply sulfur powder to the cultivation substrate. As sulfur needs to be decomposed in the substrate for a certain period of time (more than 40 days) to play a regulatory role, so the application should be carried out as soon as possible, generally starting when 2 or 3 true leaves appear after transplanting seedlings, and the amount of application depends on the original pH of the culture medium. In addition, although acid fertilizers such as ferrous sulfate and aluminum sulfate have the effect of reducing pH value in a short time, excessive salt ion concentration will cause toxicity to plant roots and should be used less in production.

Disease prevention and cure

Lupin leaf spot is brown to black, which harms the growth of leaves and stems, resulting in the early death of leaves. It can be sprayed with 1500 times of carbendazim wettable powder, and the effect is good.

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