The propagation method of Pingpeng grass

Many friends often confuse water lily and nuphar, which are actually two different plants. Nuphar is not strict with soil requirements, low temperature tolerance, dormant temperature needs to be maintained at 0-5℃. The reproduction of Nuphar grass can be divided into sexual reproduction and asexual reproduction. Xiaobian will briefly introduce two types of reproduction methods of Nuphar grass for you.

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Sexual reproduction: the seeds collected and stored in the first year are artificially germinated in the spring of the second year, and the sowing soil is clear soil with pH between 6.5 and 7.0. Add fertilizer (decomposed sesame cake, bean cake, etc.) and mix evenly. After soaking in water for 3- 5 days (it is best to sprinkle a layer of sand on the surface of the mud), add water 3-5 cm deep. After the water settles, sprinkle the seeds that promote good buds in it. Add water and change water in time according to the growth status of seedlings until the seedlings grow small leaves (floating leaves) before transplanting.

When transplanting, the row spacing of each plant is 10 cm, the plant spacing is 15-20 cm, and the management of seedling stage is strengthened. When the plant grows to 4-6 floating leaves (more than 8 cm wide), it can be planted. The planting method is one plant per tank (1 plant/square meter). If it is planted in a large area of ornamental area and the soil is fertile, it can be planted by 1 plant 2 meters. The seeds of Nuphar were stored at 3-5℃, and the germination rate of next year was above 80%.

Asexual reproduction: Asexual reproduction is to underground stem reproduction, ramet reproduction. Propagation is carried out in March and April, and tubers with main buds are cut into 6-8 cm long and lateral buds are cut into 3-4 cm long as propagation materials. Plant division propagation is carried out in May to June, which is to cut tubers with main buds into 6-8 cm long, then remove yellow leaves and part of old leaves, and reserve part of adventitious roots for planting. The plants propagated by plant division quickly enter the growth stage under the condition of sufficient nutrients, that is, they can bloom and bear fruit in the same year.

The breeding method of Nuphar. The propagation technology of Nuphar.

Compared to water lilies, we are unfamiliar with Nuphar, especially Nuphar mosaic, which can be used as a family potted plant. How do you raise Nuphar? What are the reproductive techniques? Let's get to know each other.

1. Nuphar cultivation method

1. Temperature: Temperature has a very important relationship with the growth and development of Nuphar. During this time the water must be kept flowing. The most suitable temperature for Nuphar plants: monthly average temperature range is 16.5-24-29-13℃. When the average daily temperature (in late November or early December) was about 10℃, the plants stopped growing.

2. Light: Light has little effect on the growth and development of Nuphar. It can grow normally under the light conditions in Wuhan.

3, soil: Nuphar plants on the soil pH requirements are not very strict, in the pH=5.5-7.5 conditions can grow normally. However, fertility has a close relationship with it, fertile soil, flowers, colorful, long flowering period, the whole plant grows vigorously, ornamental period is long, otherwise, lose ornamental value.

4. Selection of tank and pool: We choose the planting conditions of tank height 65 cm, tank inner diameter 65-80 cm, pool inner diameter 1×1 m or 2×2 m, depth 60 cm.

5, pest control: control Spirogyra (moss) can be sprayed with copper sulfate in water, seedling spray concentration of 3-5mg/L, seedling stage of 30-50mg/L. Aphids can be used 1000-1200 times trichlorfon, dichlorvos or 50% dimethoate emulsion 2000 times can play an insecticidal effect. Insects such as Spodoptera litura can be sprayed on the surface of leaves with 1000-1500 times of enemy to kill insects. Snails can be used tea cake, quicklime, turmeric powder, etc. can achieve the effect of insecticide. There is also field management, which involves the constant removal of cotton wool and weeds.

II. Propagation techniques of Nuphar

Sexual reproduction: the seeds collected and stored in the first year are artificially germinated in the spring of the second year, and the sowing soil is clear soil with pH between 6.5 and 7.0. Add fertilizer (decomposed sesame cake, bean cake, etc.) and mix evenly, soak in water for 3- 5 days (preferably sprinkle a layer of sand on the surface of the mud), add water 3-5 cm deep, after the water settles, sprinkle the seeds that promote good buds in it, add water and change water in time according to the growth status of seedlings, until the seedlings grow small leaves (floating leaves) before transplanting.

Asexual reproduction: Asexual reproduction is to underground stem reproduction, ramet reproduction. Propagation is carried out in March and April, and tubers with main buds are cut into 6-8 cm long and lateral buds are cut into 3-4 cm long as propagation materials. Plant division propagation is carried out from May to June, which is to cut tubers with main buds into 6-8 cm long, then remove yellow leaves and part of old leaves, and reserve part of adventitious roots for planting. The plants propagated by plant division quickly enter the growth stage under the condition of sufficient nutrients, that is, they can bloom and bear fruit in the same year.

The above is Nuphar breeding methods and Nuphar propagation technology introduction, I hope to help you, better culture of their own potted Nuphar.

How does the winter weather affect the growth of Nuppence?

Nuphar is a perennial floating-leaf aquatic herb, suitable for living in water depth of 30~60 cm, the temperature dropped below 12℃ to stop growing. Does the nuphar wither in winter? In the south of the Yangtze River winter does not need cold, if not winter in the north, Nuphar is will wither. Let's take a look at the cultivation methods of Nuphar grass and other related information.

Does Nuphar wither in winter?

Nuphar naturally likes to grow in warm, moist and sunny environments. The selection of soil is not strict, low temperature resistance, soil fertility slightly sticky as well. It is suitable for living in water depths of 30~60 cm, and the deepest should not exceed 1 meter. The suitable temperature for growth is 15~32℃, and the growth stops when the temperature drops below 12℃. Low temperature resistance, winter south of the Yangtze River does not need cold, can be in the open water pool winter; winter in the north need to protect the winter, dormant temperature can be kept at 0~5℃.

Introduction to Nuphar

Nuphar is a perennial floating-leaf aquatic herb with thick, massive rhizomes and recumbent stems. Leaves dimorphic, floating leaves papery or subleathery, rounded to ovate, 8 - 17 cm long, entire, base dehiscent deeply cordate.

Nuphar leaves are green and shiny, and the back of the leaves is convex and hairy. lateral veins fine, several times 2-forked branched, petiole terete. Submerged leaves are thin and soft. Flowers solitary, terete peduncles sticking out of water, buds globose, green. Sepals 5, obovate, cuneate, yellow, petaloid.

I. Morphological characteristics

Nuphar is a perennial floating-leaf aquatic herb. Rhizomes plump and massive, recumbent. Leaves dimorphic, floating leaves papery or subleathery, rounded to ovate, 8 - 17 cm long, entire, base dehiscent deeply cordate. Foliage green and bright, leaf back raised, pilose. lateral veins fine, several times 2-forked branched, petiole terete. Submerged leaves are thin and soft. Flowers solitary, terete peduncles sticking out of water, buds globose, green. Sepals 5, obovate, cuneate, yellow, petaloid.

Petals 10~20, narrowly cuneate, sterile stamens, deciduous; stamens numerous, born on receptacle at base of ovary within petals, deciduous. Carpels 12 - 15, connate into superior ovary, carpels clearly demarcated, each forming a stigma at the apex, making the pistil stigma radial disk shape. Ovary locules as many as carpels, embryos numerous, borne on septa. Berry ovate, 3 cm long, with persistent sepals, irregularly dehiscent. Seeds oblong, yellow-brown, shiny. The flowering period is from May to July and the fruiting period is from July to September.

Nuphar guizhouensis leaves nearly round or oval, plant type is small. Chinese Nuphar leaves ovate heart, large flowers, flower diameter 5~6 cm, stem length out of the water surface about 20 cm, ornamental value is very high.

Eurasian Nuphar leaves are large, thickly leathery, elliptic. Nuphar taiwanensis leaves oblong or ovate.

Nuphar is a perennial floating-leaf aquatic herb. Rhizomes plump and massive, recumbent. Leaves dimorphic, floating leaves papery or subleathery, rounded to ovate, 8 - 17 cm long, entire, base dehiscent deeply cordate. Foliage green and bright, leaf back raised, pilose. lateral veins fine, several times 2-forked branched, petiole terete. Submerged leaves are thin and soft. Flowers solitary, terete peduncles sticking out of water, buds globose, green. Sepals 5, obovate, cuneate, yellow, petaloid.

Flowers: The florescence of Nuphar formosana is all year round. The flowers have round pedicels and white villous hairs. The outermost periphery of the flowers is green or dark red sepals. The calyx is five. Sepals are about 1.6 cm long and 0.8-1.2 cm wide. The inner ring is petals. The petals are not very obvious. The petals are linear, about 10, yellow, about 5-6 mm long and 1.5-2 mm wide. The appearance is similar to stamens. The inner part of the petals is the stamen, about 30, yellow, anthers about 3 mm long, filaments about 7 mm long, anthers clearly distinguished from petals; the central stigma spreads into a disk at the top, 6-10 lobed, some species are completely united, red, about 20 species of Nuphar in the world, it is the only red pistil, the stigma below the ovary will be reduced like a bottleneck, but some species do not.

Leaves: floating leaves nearly round, floating leaves with a V-shaped notch at base, ca. 10-12 cm long, 7-10 cm wide, with many short hairs on lower surface; petiole triangular in cross section, enlarged into wings at base.

Fruit and seeds: The fruit is pot-shaped, about 2 cm long and 1.5 cm wide. Seeds ovate, grass-green, mung-like, ca. 3-4 mm long, 2 mm wide.

Rootstock: Taiwan Nuphar rhizomes plump, cylindrical, underground stem about one meter deep under the mud, diameter can be 2 cm, mature underground stem white, diameter about 3 cm.

Floral characteristics: the most obvious part of the periphery is sepals, sepals outside often green or dark red, to the inner round is petals, its petals are not obvious, looks and stamens are very close, not easy to distinguish if not carefully looked at, and then inward is a large number of stamens, there are obvious anthers, and petals can be clearly distinguished. The center is the pistil, and the stigma at the top of the pistil expands to form a plate-like shape. Some species are completely united, while the stigma of Nuphar formosana has 6-10 divisions, and the part below the stigma to the ovary shrinks like a bottleneck, but some species do not.

Cultivation Techniques of Nuphar

1. Temperature

Temperature plays an important role in the growth and development of Nuphar. The average temperature of Wuhan from April to July is 16.5-21.7℃, which is most suitable for seedling cultivation; when the average temperature exceeds 29℃ in August, it has certain influence on the growth and development of the plant. When the temperature is 38℃ for a long time, the plant stops growing or grows very slowly; when the temperature is above 42℃, the surface temperature is 53℃, the water temperature rises accordingly, and rotten leaves will appear, and serious ones will cause plant death. Therefore, it is necessary to maintain a smooth flow of water during this period. The most suitable temperature for Nuphar plants: monthly average temperature range is 16.5-24-29-13℃. When the average daily temperature (in late November or early December) was about 10℃, the plants stopped growing.

2. Light

Light had little effect on the growth and development of Nuphar. It can grow normally under the light conditions in Wuhan.

3. Soil

Nuphar plants are not very strict with soil pH, and can grow normally under pH=5.5-7.5 conditions. However, fertility has a close relationship with it, fertile soil, flowers, colorful, long flowering period, the whole plant grows vigorously, ornamental period is long, otherwise, lose ornamental value.

4. Selection of tank and pool

We selected the planting conditions of 65 cm high, 65-80 cm inside diameter, 1×1 m or 2×2 m inside diameter and 60 cm deep.

Culture method of Nuphar

I. Construction planting

Choose the environment with deep, loose and fertile subsoil layer and sufficient light for construction planting. The construction method of Nuphar is divided into two forms: direct planting and bag planting. Nuphar rhizome, petiole slender, in order to improve the survival rate, often transplant the whole seedling.

The direct planting method is suitable for the construction environment where the water depth is below 80 cm and the construction conditions are superior. During construction, the rhizomes of Nuphar are directly planted in the soil layer. The adaptability of Nuphar is strong, and the construction of the growth period can resume growth in 10 days after the general construction, and it can bloom in about 25 days.

For the construction areas where the bottom soil layer is too loose or too shallow to be planted directly, and the water level is too deep and changes greatly, the construction planting is often carried out in the form of bag planting with guest soil. A non-woven bag or a planting bag is used as a carrier for planting the guest soil bag, fertile loam or pond mud is used as a substrate, and the root base of the Nuphar is tightly tied in the bag to expose the terminal bud. It shall be put into the water area of construction area according to construction requirements. The roots of Nuphar planted in bags can penetrate the bags and take root in the subsoil. Therefore, the survival rate after planting is higher than that of direct planting.

When Nuphar is potted in waterscape, pond mud or decomposed organic matter plus garden soil is used as cultivation substrate. After planting, it is placed in shallow water area for maintenance. After growth recovery, it is moved into landscape area for daily management and extensive management.

II. Disease control of Nuphar

A large number of aphids often occur during the growth of Nuphar, which can be sprayed with 1000~1200 times trichlorfon, dichlorvos or 50% dimethoate emulsion 200 times. Snails can be treated with tea cakes, carbofuran and quicklime.

Control Spirogyra (moss) can be sprayed with copper sulfate in water, spraying concentration of 3-5mg/L in seedling stage, 30-50mg/L in seedling stage. Aphids can be used 1000-1200 times trichlorfon, dichlorvos or 50% dimethoate emulsion 2000 times can play an insecticidal effect. Insects such as Spodoptera litura can be sprayed on the surface of leaves with 1000-1500 times of enemy to kill insects. Snails can be used tea cake, quicklime, turmeric powder, etc. can achieve the effect of insecticide. There is also field management, which involves the constant removal of cotton wool and weeds.

The reproductive mode of Nuphar

In addition to growing new buds and branches from the underground stems, seeds play a more important role in reproduction and dissemination. When the fruit ripens, it splits open to expose the white endocarp. The seeds are enclosed in this endocarp. This white endocarp is sea-like and slightly sticky, which can help the seeds float on the water surface for a period of time. Finally, the seeds will be completely released and sink to the bottom. Seeds can germinate at the right temperature without dormancy problems. Seeds are an important mechanism by which Nuphar spreads, while underground stems are the most advantageous way for it to expand its territory after reaching a new place.

1. Sexual reproduction

The seeds collected and stored in the first year are artificially germinated in the spring of the second year, and the sowing soil is clear soil with pH value between 6.5 and 7.0. Add fertilizer (decomposed sesame cake, bean cake, etc.) and mix evenly, soak in water for 3- 5 days (preferably sprinkle a layer of sand on the surface of the mud), add water 3-5 cm deep, after the water settles, sprinkle the seeds that promote good buds in it, add water and change water in time according to the growth status of seedlings, until the seedlings grow small leaves (floating leaves) before transplanting.

When transplanting, the row spacing of each plant is 10 cm, the plant spacing is 15-20 cm, and the management of seedling stage is strengthened. When the plant grows to 4-6 floating leaves (more than 8 cm wide), it can be planted. The planting method is one plant per tank (1 plant/square meter). If it is planted in a large area of ornamental area and the soil is fertile, it can be planted by 1 plant 2 meters. The seeds of Nuphar were stored at 3-5℃, and the germination rate of next year was above 80%.

2. Asexual reproduction

Asexual reproduction is to underground stem reproduction, ramet reproduction. Propagation is carried out in March and April, and tubers with main buds are cut into 6-8 cm long and lateral buds are cut into 3-4 cm long as propagation materials. Plant division propagation is carried out in May to June, which is to cut tubers with main buds into 6-8 cm long, then remove yellow leaves and part of old leaves, and reserve part of adventitious roots for planting. The plants propagated by plant division quickly enter the growth stage under the condition of sufficient nutrients, that is, they can bloom and bear fruit in the same year.