CN105532407B - A kind of float seedling method of Pieris Formosa - Google Patents

Abstract

The invention discloses a method for floating seedling cultivation of Drunkenia beautiful, which comprises the steps of building a floating seedling pond, seed treatment, preparation of seedling substrate, selection and disinfection of floating trays, tray loading, sowing, setting of floating water body, and application of floating seedling nutrient solution. Steps such as planting, moss control, seedling hardening, and transplanting complete the seedling cultivation of Drunkenia beautiful. The seedling raising method provided by the present invention not only sets the type of floating seedling raising substrate and the particle size of the substrate, but also sets the pH value and water temperature of the floating water body, the ratio of the substrate, the water content of the substrate, the specific operation steps during sowing, and the control of moss. etc. have made strict regulations, thereby greatly improving the emergence rate of the beautiful horse drunken tree, so that the emergence rate has reached more than 90%. Seedling rate: The cultivated seedlings have high uniformity, the root system of the seedlings is developed and strong, the growth is vigorous, the disease is less, and there is no weed.

Description

A kind of method of floating seedling raising of Drunkenia beautiful

technical field

The invention relates to a method for raising seedlings of ornamental seedlings, in particular to a method for raising seedlings by floating of eucalyptus, belonging to the technical field of ornamental horticulture.

Background technique

Pieris formosa belongs to Rhododendronaceae Pieris formosa, a small tree, born in evergreen broad-leaved forests, pine forests or forest edge shrubs at an altitude of 1500-2800 meters. Branchlets cylindrical, glabrous, with leaf scars on branches; winter buds smaller, ovoid, glabrous outside scales. The plant shape is beautiful, the leaf color is changeable, and the inflorescence is white, which is very charming. It is widely used in indoor potted plants and small gardens in Europe and Japan. This species is cold-resistant, wind-resistant, anti-pollution, and has strong germination power. It is an excellent evergreen shrub for foliage and flower viewing in landscaping. In the cold winter, with its unique posture and color, it displays its intoxicating charm. Beautiful horse drunken wood is sought after by people because of its rich, vivid color characteristics.

The propagation method of beautiful horse drunken tree is mainly by seed propagation. Due to the small size of the seeds, ordinary substrates such as soil, humus, etc. have different particle sizes, making the contact surface between the seeds and the substrate too large or too small, which will easily cause the seeds to be too dry or wet, thus affecting the germination rate. and survival rate.

The floating seedling raising method is generally aimed at the seedling raising method of small and very small seeds. In recent years, this method is more common in agricultural production, but it is rarely used in garden plant cultivation. If floating seedlings can be utilized to develop a seedling raising method that is suitable for viewing and admiring the seedlings of Drunkenia beautiful, it will help to improve the germination rate and survival rate of Drunkenia beautiful.

Contents of the invention

In order to solve the effects of seed germination on the seed germination process of Drunkenia beautiful, the type of substrate, the particle size of the substrate, the pH value of the water body, the water temperature, and the water content of the substrate, the present invention provides a floating seedling raising method of Drunkenia beautiful, which combines the The germination characteristics of the seeds of Drunkenia japonica improved the common floating seedling raising technology.

The present invention is realized through the following technical solutions: a method for raising seedlings by floating of Drunkenia beautiful, through the following steps:

(1) Build a floating nursery pond: build a floating pond for seedling cultivation as usual;

(2) Seed treatment: Harvest the seeds of Drunkenia beautiful from November to January of the next year, remove impurities and unfulfilled seeds after collection, pack high-quality seeds in cloth bags and store them in cold storage at 1-5°C for later use;

(3) Preparation of seedling substrate: Grind humus, perlite, plant ash and common calcium to 10-15 meshes, and then mass ratio of humus: perlite: plant ash: common calcium is (6-7) :(2～3):0.5:0.5 Mix evenly to obtain the seedling substrate, sprinkle the seedling substrate with a potassium permanganate solution with a mass concentration of 0.1-0.3%, and use a mass concentration of 1-2% the next day after wetting After wetting the formaldehyde solution, cover it with a plastic film for airtight disinfection for a week and then open it. After the smell of the medicine is naturally lost, add water to moisten it. 4 million grains/㎏), ordinary substrates such as soil, humus and other particles have different sizes, making the pores on the contact surface between the seeds and the substrate too large or too small, which will easily cause the seeds to be too dry or wet, which will affect the quality of the seeds. Germination rate and survival rate; the selection of the above-mentioned seedling substrate ensures the conditions required for the germination of the seeds of Drunkenia beautiful, and effectively improves the seed germination rate by more than 35% compared with conventional seedling cultivation;

(4) Selection and disinfection of floating trays: use polystyrene foam floating trays, and disinfect if necessary;

(5) Packing: put the seedling substrate obtained in step (3) into the holes of the floating tray in step (4), and keep the seedling substrate in the holes moderately tight;

(6) Sowing: From February to April every year, when the local temperature reaches above 15°C, sow 10 to 15 seedlings of Drunkenia japonica treated in step (2) into the holes of step (5) for seedling cultivation In the substrate, ensure that the sowing depth is 3-4mm, which can effectively increase the germination rate;

(7) Setting of floating water body: Put the sown floating plate in step (6) into the floating pool in step (1) horizontally, keep the water temperature in the floating pool at 15-25°C, and the water depth at 10-15 cm. The pH is 6.5 to 7, and the water in the floating pool is changed every 10 to 15 days to prevent moss from growing; the above conditions are very suitable for the germination of Drunkenia beautiful;

(8) Application of nutrient solution for floating seedlings: From sowing to emergence, it takes about three months for Drunkenia beautiful. During this time period, according to the different requirements for nutrient solution of Drunkenia beautiful, it is divided into two stages:

The first stage: within one month from the start of sowing, fermented animal manure fertilizer and water are applied to the floating pond to keep the concentration of molecular ammonia at 0.2-0.4㎎/L;

The second stage: within the second month after sowing, add NH ₄ NO ₃ or CN ₂ H ₄ O to the floating pond to keep the concentration of molecular ammonia at 0.4-0.8㎎/L;

(9) Moss control: Before the seeds germinate, moss is easy to grow in the floating pond, and after the seeds germinate, the surface of the substrate is easy to grow moss. Remove the moss in time to ensure that the seeds can germinate normally;

(10) Seedling hardening: When the seedlings of Drunkenia beautiful grow to 3cm or more, harden the seedlings. When hardening the seedlings, pick up the floating plate from the floating pool and move it to a greenhouse covered with a shading net with a shading rate of 70%. Pave the seedling bed with 2-3cm of mountain sand, and spray the seedlings with urea or compound fertilizer solution with a mass concentration of 1-2‰ every 10 days; the seedlings will be hardened for a total of 20-30 days;

(11) Transplanting: Transplant the seedlings that have been hardened in step (10), that is, complete the seedling cultivation of Drunkenia beautiful.

In the step (1), the floating pool for raising seedlings is built as usual, and a greenhouse is first built, covered with a white plastic film and a shading net with a shading rate of 90%, and built in the greenhouse with a width of 1.4 meters, a depth of 20 to 25 centimeters, and a length of For the floating pool with the same length as the greenhouse, after leveling the bottom of the pool with fine sand or fine soil, spread more than 8 wires of black film to ensure that the film width is ≥ 2 meters, and the length is suitable for the floating pool; add 10 to 15 cm deep into the floating pool source of clean water.

The polystyrene foam float in the step (4) has 136 holes or 162 holes, and its outer dimension is 66.5×35×5.5cm.

Disinfection in step (4) when necessary is to use the old floating plate to spray with formalin solution with a mass concentration of 1-2%, and rinse the cover film with clean water after fumigation for 1-2 days; or use Soak in potassium permanganate solution with a mass concentration of 0.3-0.5% for 1-2 hours, and then wash with water; use a new floating plate, that is, no need for disinfection.

In the step (7), the pH is adjusted to be 6.5-7 by using NaHCO ₃ solution or HCl solution.

The concentration of molecular ammonia in the step (8) is diluted and maintained with natural mineral water.

The moss is easy to grow in the floating pond before the seeds germinate in the step (9), which is caused by the lack of fertilizer in the pond water. Using fermented animal manure fertilizer to maintain the molecular ammonia concentration of 0.2-0.8㎎/L can effectively inhibit the growth of moss.

In the step (9), moss is easy to grow on the surface of the matrix after the seeds germinate. The moss on the surface of the matrix after the seeds germinate is not controlled in time. After the moss spreads and forms a thin layer of covering, it will hinder the germination of the seeds and the growth of the seedlings. Spreading 0.2-0.3 kg/㎡ of plant ash on the surface can not only effectively eliminate moss, but also increase the seedling rate by more than 45% compared with conventional seedling raising methods.

The ratio of N:P:K in the compound fertilizer solution in the step (10) is 19:7:14.

The present invention has following advantage and effect:

The seedling raising method provided by the present invention not only sets the type of floating seedling raising substrate and the particle size of the substrate, but also sets the pH value and water temperature of the floating water body, the ratio of the substrate, the water content of the substrate, the specific operation steps during sowing, and the control of moss. Strict regulations have been made, thereby greatly improving the emergence rate of the beautiful drunken tree, making the emergence rate reach more than 90%, shortening the time for seedling cultivation and saving production costs.

Traditional nursery methods for Drunken baeba include nursery beds, plugs, or containers. Due to the small size of the seeds (4 million grains/kg), the conventional seedling raising method is difficult to meet the moisture and temperature requirements for seed germination, so that the germination rate, emergence rate and seedling rate of the beautiful drunken tree are generally 45%, 30%, About 50%. And through the seedling raising method of the present invention, the germination rate, the emergence rate, and the seedling rate are respectively 75-85%, 60-75%, and 80-95%; The germination rate can increase the seedling rate by more than 45%; the cultivated seedlings have high uniformity, the root system of the seedlings is developed and strong, the growth is vigorous, there are few diseases, and there are no weeds; 3000-5000 seedlings can be propagated per square meter of floating plate, and the production efficiency Extremely high, saving production costs. The invention integrates the germination characteristics of the floating seedlings and the seeds of the eucalyptus, and the provided seedling raising method is suitable for the eucalyptus, and the method has strong practicability, low cost, strong pertinence, and good industrialization effect.

Detailed ways

The present invention will be further described below in conjunction with embodiment.

Example 1

(1) Build a floating nursery pool: build a floating pool for seedlings according to the routine: first build a greenhouse, and cover it with a white plastic film and a shading net with a shading rate of 90%. For the floating pool with the same length as the greenhouse, after leveling the bottom of the pool with fine sand or fine soil, spread more than 8 filaments of black film to ensure that the film width is ≥ 2 meters, and the length is suitable for the floating pool; add 10 to 15 cm to the floating pool Deep source of clean water.

(2) Seed treatment: Harvest the seeds of Drunkenia beautiful from November to January of the next year, remove impurities and unfulfilled seeds after collection, pack high-quality seeds in cloth bags and store them in cold storage at 1°C for later use;

(3) Preparation of seedling substrate: Grind humus, perlite, plant ash and common calcium to 10-15 meshes, and then mass ratio of humus: perlite: plant ash: common calcium is 6:2:0.5 : 0.5 mixed evenly, to obtain the seedling substrate, with a mass concentration of 0.1% potassium permanganate solution to water the seedling substrate, after wetting, use a mass concentration of 1% formaldehyde solution to wet the next day, cover the airtight with a plastic film Open it after one week of disinfection, and then moisten it with clean water after the smell of the medicine dissipates naturally. The particle sizes of soil and humus are different, making the pores of the contact surface between the seeds and the substrate too large or too small, which will easily cause the seeds to be too dry or wet, thereby affecting the germination rate and survival rate; the selection of the above-mentioned seedling substrates ensures Satisfied the conditions required for the germination of the seeds of Drunkenia beautiful, and effectively increased the seed germination rate by more than 35% compared with conventional seedling cultivation;

(4) Selection and disinfection of the floating plate: use polystyrene foam floating plate (136 holes, its outer size is 66.5×35×5.5cm), if necessary, carry out disinfection: that is, when using the old floating plate, use the mass concentration Spray with 1% formalin solution, rinse the cover film with clean water after fumigation for 1 day; or soak with 0.3% potassium permanganate solution for 1 hour, and then wash with water; use a new floating plate, That is, no disinfection is required;

(5) Packing: put the seedling substrate obtained in step (3) into the holes of the floating tray in step (4), and keep the seedling substrate in the holes moderately tight;

(6) Sowing: From February to April every year, when the local temperature reaches above 15°C, sow 10 to 15 seedlings of Drunkenia japonica treated in step (2) into the holes of step (5) for seedling cultivation In the substrate, ensure that the sowing depth is 3-4mm, which can effectively increase the germination rate;

(7) Setting of the floating water body: put the sown floating plate in step (6) into the floating pool in step (1) horizontally, keep the water temperature in the floating pool at 15°C, the water depth at 10 cm, and the pH at 6.5. The water in the floating pool is changed every 10 days to prevent the growth of moss; the above-mentioned conditions are very suitable for the germination of the eucalyptus; the pH of 6.5 is adjusted with NaHCO ₃ solution or HCl solution;

(8) Application of nutrient solution for floating seedlings: From sowing to emergence, it takes about three months for Drunkenia beautiful. During this time period, according to the different requirements for nutrient solution of Drunkenia beautiful, it is divided into two stages:

The first stage: within one month from the start of sowing, fermented animal manure fertilizer water is applied to the floating pond to maintain the concentration of molecular ammonia at 0.2-0.4㎎/L; the concentration of molecular ammonia is diluted and maintained with natural mineral water;

The second stage: within the second month after sowing, add NH ₄ NO ₃ to the floating pond to maintain the concentration of molecular ammonia at 0.4-0.8㎎/L; the concentration of molecular ammonia is diluted with natural mineral water to maintain;

(9) Moss control: Moss is easy to grow in the floating pool before the seeds germinate, which is caused by the lack of fertilizer in the pool water. Using fermented animal manure to maintain the concentration of molecular ammonia at 0.2-0.8㎎/L can effectively inhibit the growth of moss; after the seeds germinate, the substrate The surface is easy to breed moss, because the moss on the surface of the substrate after the seeds germinate is not controlled in time, and the moss spreads to form a thin layer of cover, which will hinder the germination of the seeds and the growth of the seedlings. The surface of the substrate is sprayed with plant ash 0.2～0.3㎏/㎡, It can not only effectively eliminate moss, but also increase the seedling rate by more than 45% compared with conventional seedling raising methods;

(10) Seedling hardening: When the seedlings of Drunkenia beautiful grow to 3cm or more, harden the seedlings. When hardening the seedlings, pick up the floating plate from the floating pool and move it to a greenhouse covered with a shading net with a shading rate of 70%. Pave the hardening bed with 2-3cm of mountain sand, and spray the seedlings with urea with a mass concentration of 1‰ every 10 days; harden the seedlings for a total of 20-30 days;

(11) Transplanting: Transplant the seedlings that have been hardened in step (10), that is, complete the seedling cultivation of Drunkenia beautiful.

In this case, the germination rate, emergence rate, and seedling rate were 84%, 72%, and 95%, respectively.

Example 2

(1) Build a floating nursery pool: build a floating pool for seedlings according to the routine: first build a greenhouse, and cover it with a white plastic film and a shading net with a shading rate of 90%. For the floating pool with the same length as the greenhouse, after leveling the bottom of the pool with fine sand or fine soil, spread more than 8 filaments of black film to ensure that the film width is ≥ 2 meters, and the length is suitable for the floating pool; add 10 to 15 cm to the floating pool Deep source of clean water.

(2) Seed treatment: Harvest the seeds of Drunkenia beautiful from November to January of the next year, remove impurities and unfulfilled seeds after collection, pack high-quality seeds in cloth bags and store them in cold storage at 3°C for later use;

(3) Preparation of seedling substrate: Grind humus, perlite, plant ash and common calcium to 10-15 meshes, and then press the mass ratio of humus: perlite: plant ash: common calcium to be 6.5:2.5:0.5 : 0.5 mixed evenly, to obtain the seedling substrate, with a mass concentration of 0.2% potassium permanganate solution to water the seedling substrate, after wetting, use a mass concentration of 1.5% formaldehyde solution to wet the next day, cover with plastic film Open it after one week of disinfection, and then moisten it with clean water after the smell of the medicine dissipates naturally. The particle sizes of soil and humus are different, making the pores of the contact surface between the seeds and the substrate too large or too small, which will easily cause the seeds to be too dry or wet, thereby affecting the germination rate and survival rate; the selection of the above-mentioned seedling substrates ensures Satisfied the conditions required for the germination of the seeds of Drunkenia beautiful, and effectively increased the seed germination rate by more than 35% compared with conventional seedling cultivation;

(4) Selection and disinfection of floating trays: use polystyrene foam floating trays (162 holes, the outer dimensions of which are 66.5×35×5.5cm), and disinfect when necessary: that is, when using old floating trays, use mass concentration Spray 1.5% formalin solution, rinse the cover film with clean water after fumigation for 2 days; or soak in 0.4% potassium permanganate solution for 1.5 hours, and then wash with water; use a new floating plate, That is, no disinfection is required;

(5) Packing: put the seedling substrate obtained in step (3) into the holes of the floating tray in step (4), and keep the seedling substrate in the holes moderately tight;

(6) Sowing: From February to April every year, when the local temperature reaches above 15°C, sow 10 to 15 seedlings of Drunkenia japonica treated in step (2) into the holes of step (5) for seedling cultivation In the substrate, ensure that the sowing depth is 3-4mm, which can effectively increase the germination rate;

(7) Setting of the floating water body: put the sown floating plate in step (6) into the floating pool in step (1) horizontally, keep the water temperature in the floating pool at 20°C, the water depth at 12 cm, and the pH at 7. The water in the floating pool is changed every 12 days to prevent the growth of moss; the above conditions are very suitable for the germination of eucalyptus; the pH of 7 is adjusted with NaHCO ₃ solution or HCl solution;

(8) Application of nutrient solution for floating seedlings: From sowing to emergence, it takes about three months for Drunkenia beautiful. During this time period, according to the different requirements for nutrient solution of Drunkenia beautiful, it is divided into two stages:

The first stage: within one month from the start of sowing, fermented animal manure fertilizer water is applied to the floating pond to maintain the concentration of molecular ammonia at 0.2-0.4㎎/L; the concentration of molecular ammonia is diluted and maintained with natural mineral water;

The second stage: within the second month after sowing, add NH ₄ NO ₃ or CN ₂ H ₄ O to the floating pond to keep the molecular ammonia concentration at 0.4-0.8㎎/L; the molecular ammonia concentration is measured with natural mineral water Dilution hold;

(9) Moss control: Moss is easy to grow in the floating pool before the seeds germinate, which is caused by the lack of fertilizer in the pool water. Using fermented animal manure to maintain the concentration of molecular ammonia at 0.2-0.8㎎/L can effectively inhibit the growth of moss; after the seeds germinate, the substrate The surface is easy to breed moss, because the moss on the surface of the substrate after the seeds germinate is not controlled in time, and the moss spreads to form a thin layer of cover, which will hinder the germination of the seeds and the growth of the seedlings. The surface of the substrate is sprayed with plant ash 0.2～0.3㎏/㎡, It can not only effectively eliminate moss, but also increase the seedling rate by more than 45% compared with conventional seedling raising methods;

(10) Seedling hardening: When the seedlings of Drunkenia beautiful grow to 3cm or more, harden the seedlings. When hardening the seedlings, pick up the floating plate from the floating pool and move it to a greenhouse covered with a shading net with a shading rate of 70%. Pave the hardening bed with 2-3cm of mountain sand, spray the seedlings with a compound fertilizer solution (N:P:K=19:7:14) with a mass concentration of 2‰ every 10 days; harden the seedlings for a total of 20-30 days ;

(11) Transplanting: Transplant the seedlings that have been hardened in step (10), that is, complete the seedling cultivation of Drunkenia beautiful.

In this example, the germination rate, emergence rate, and seedling rate were 82%, 75%, and 95%, respectively.

Example 3

(1) Build a floating nursery pool: build a floating pool for seedlings according to the routine: first build a greenhouse, and cover it with a white plastic film and a shading net with a shading rate of 90%. For the floating pool with the same length as the greenhouse, after leveling the bottom of the pool with fine sand or fine soil, spread more than 8 filaments of black film to ensure that the film width is ≥ 2 meters, and the length is suitable for the floating pool; add 10 to 15 cm to the floating pool Deep source of clean water.

(2) Seed treatment: Harvest the seeds of Drunkenia beautiful from November to January of the next year, remove impurities and unfulfilled seeds after collection, pack high-quality seeds in cloth bags and refrigerate them at 5°C for later use;

(3) Preparation of seedling substrate: Grind humus, perlite, plant ash and common calcium to 10-15 meshes, and then mass ratio of humus: perlite: plant ash: common calcium is 7:3:0.5 : 0.5 mixed evenly to obtain the seedling substrate, with a mass concentration of 0.3% potassium permanganate solution to sprinkle the seedling substrate, after wetting, use a mass concentration of 2% formaldehyde solution to wet the next day, cover the airtight with a plastic film Open it after one week of disinfection, and then moisten it with clean water after the smell of the medicine dissipates naturally. The particle sizes of soil and humus are different, making the pores of the contact surface between the seeds and the substrate too large or too small, which will easily cause the seeds to be too dry or wet, thereby affecting the germination rate and survival rate; the selection of the above-mentioned seedling substrates ensures Satisfied the conditions required for the germination of the seeds of Drunkenia beautiful, and effectively increased the seed germination rate by more than 35% compared with conventional seedling cultivation;

(4) Selection and disinfection of floating trays: use polystyrene foam floating trays (162 holes, the outer dimensions of which are 66.5×35×5.5cm), and disinfect when necessary: that is, when using old floating trays, use mass concentration Spray with 2% formalin solution, rinse the cover with water after fumigation for 2 days; or soak with 0.5% potassium permanganate solution for 2 hours, and then wash with water; use a new floating plate, That is, no disinfection is required;

(5) Packing: put the seedling substrate obtained in step (3) into the holes of the floating tray in step (4), and keep the seedling substrate in the holes moderately tight;

(6) Sowing: From February to April every year, when the local temperature reaches above 15°C, sow 10 to 15 seedlings of Drunkenia japonica treated in step (2) into the holes of step (5) for seedling cultivation In the substrate, ensure that the sowing depth is 3-4mm, which can effectively increase the germination rate;

(7) Setting of the floating water body: put the sown floating plate in step (6) into the floating pool in step (1) horizontally, keep the water temperature in the floating pool at 25°C, the water depth at 15 cm, and the pH at 7. The water in the floating pool is changed every 15 days to prevent the growth of moss; the above-mentioned conditions are very suitable for the germination of eucalyptus; the pH of 7 is adjusted with NaHCO ₃ solution or HCl solution;

(8) Application of nutrient solution for floating seedlings: From sowing to emergence, it takes about three months for Drunkenia beautiful. During this time period, according to the different requirements for nutrient solution of Drunkenia beautiful, it is divided into two stages:

The first stage: within one month from the start of sowing, fermented animal manure fertilizer water is applied to the floating pond to maintain the concentration of molecular ammonia at 0.2-0.4㎎/L; the concentration of molecular ammonia is diluted and maintained with natural mineral water;

The second stage: within the second month after sowing, add NH ₄ NO ₃ or CN ₂ H ₄ O to the floating pond to keep the molecular ammonia concentration at 0.4-0.8㎎/L; the molecular ammonia concentration is measured with natural mineral water Dilution hold;

(9) Moss control: Moss is easy to grow in the floating pool before the seeds germinate, which is caused by the lack of fertilizer in the pool water. Using fermented animal manure to maintain the concentration of molecular ammonia at 0.2-0.8㎎/L can effectively inhibit the growth of moss; after the seeds germinate, the substrate The surface is easy to breed moss, because the moss on the surface of the substrate after the seeds germinate is not controlled in time, and the moss spreads to form a thin layer of cover, which will hinder the germination of the seeds and the growth of the seedlings. The surface of the substrate is sprayed with plant ash 0.2～0.3㎏/㎡, It can not only effectively eliminate moss, but also increase the seedling rate by more than 45% compared with conventional seedling raising methods;

(10) Seedling hardening: When the seedlings of Drunkenia beautiful grow to 3cm or more, harden the seedlings. When hardening the seedlings, pick up the floating plate from the floating pool and move it to a greenhouse covered with a shading net with a shading rate of 70%. Pave the seedling bed with 2-3cm of mountain sand, and spray the seedlings with a compound fertilizer solution (N:P:K=19:7:14) with a mass concentration of 1‰ every 10 days; the seedlings will be hardened for 20-30 days ;

(11) Transplanting: Transplant the seedlings that have been hardened in step (10), that is, complete the seedling cultivation of Drunkenia beautiful.

In this example, the germination rate, emergence rate, and seedling rate were 83%, 74%, and 95%, respectively.

Claims (8)

1. a kind of float seedling method of Pieris Formosa, it is characterised in that pass through following each step：

（1）Build Flotage seedling raising pool：Routinely build the floating pool of nursery；

（2）Seed treatment：The January of annual November to second year harvests Pieris Formosa seed, removed after collection impurity and Not full seed, high quality seed are installed to be placed at 1~5 DEG C with cloth bag and be refrigerated for use；

（3）The preparation of seedling medium：Fertile soil, perlite, plant ash and general calcium is levigate to 10~15 mesh, then press fertile soil: Perlite:Plant ash:The mass ratio of general calcium is（6~7）:（2~3）:0.5:0.5 is uniformly mixed, and obtains seedling medium, uses quality A concentration of 0.1~0.3% liquor potassic permanganate, which pours seedling medium, to be spilt, the first of use quality a concentration of 1~2% every other day after wetting After aldehyde solution waters, is raised after a week with the closed disinfection of covered rearing with plastic film, add clear water moistening again after flavour of a drug scatter and disappear naturally, protect Hold hand pinch it is agglomerating, landing nature scatter；

（4）Float the selection and disinfection of disk：Disk is floated using polystyrene plastics foam, is carried out disinfection；

（5）Sabot：By step（3）Gained seedling medium is packed into step（4）In the cavities for floating disk, the seedling medium in cavities is kept It is elastic moderate；

（6）Sowing：Annual 2~April, when ground temperature reaches 15 DEG C or more, by step（2）Treated Pieris Formosa seed It is sown into step by 10~15 in each cavities（5）Cavities seedling medium in, ensure depth of planting 3~4mm；

（7）Float the setting of water body：By step（6）The drift disk level sowed is put into step（1）Floating pool in, keep floating Water temperature in pond is 15~25 DEG C, the depth of water is 10~15 centimetres, pH is 6.5~7, and the water in floating pool changed one every 10~15 days It is secondary, to prevent moss from growing；

（8）The application of nutritive liquid for floating breeding：It is divided into two stages：

First stage：In one month after since sowing, fermentation animal wastes rich water is applied in floating pool, keeps molecules of ammonia 0.2~0.4 ㎎ of concentration/L；

Second stage：In second month after since sowing, NH is added in floating pool₄NO₃Or CN₂H₄O keeps molecules of ammonia dense Spend 0.4~0.8 ㎎/L；

（9）Moss prevents：Moss is easily grown before germination in floating pool, stromal surface easily grows moss after germination, goes out It is removed in time after existing moss；

（10）Hardening：Carry out hardening when the seedling of Pieris Formosa grows tall to 3cm or more, when hardening will drift disk from floating pool It picks up, moves in the greenhouse of 70% sunshade net of covering shading rate, being placed in place mat had on the hardening bed of the mountains 2~3cm sand, every 10 days The urea or composite fertilizer's solution for being 1~2 ‰ with mass concentration spray seedling；Hardening totally 20~30 days；

（11）Transplanting：By step（10）The seedling for completing hardening is transplanted, that is, completes the nursery to Pieris Formosa.

2. float seedling method according to claim 1, it is characterised in that：The step（1）Routinely build nursery Floating pool be the shading screen first built greenhouse, and cover White plastic film and shading rate 90%, built in greenhouse wide 1.4 meters, it is deep 20~25 centimetres, length and the identical floating pool of greenhouse length, floating pool bottom of pond with fine sand or fine earth it is levelling after, paving 8 with On black film, ensure film it is wide >=2 meters, length is suitable with floating pool；The clean water source of 10~15 centimetres of depths is added in floating pool.

3. float seedling method according to claim 1, it is characterised in that：The step（4）Polystyrene plastics bubble It is 136 holes or 162 holes that foam, which floats disk, and outside dimension is 66.5 × 35 × 5.5cm.

4. float seedling method according to claim 1, it is characterised in that：The step（4）In carry out disinfection be use It need to be sprayed with the formalin solution that mass concentration is 1~2% when old drift disk, be rushed with clear water after epiphragma is 1~2 day stifling Wash clean；Or impregnated 1~2 hour for 0.3~0.5% liquor potassic permanganate with mass concentration, it is washed with water net；Using new Disk is floated, that is, is not necessarily to carry out disinfection.

5. float seedling method according to claim 1, it is characterised in that：The step（7）It is to make that middle pH, which is 6.5~7, Use NaHCO₃Solution or HCl solution are adjusted.

6. float seedling method according to claim 1, it is characterised in that：The step（8）Molecule ammonia density day Right fossil water is diluted holding.

7. float seedling method according to claim 1, it is characterised in that：The step（9）Germination after matrix Surface easily grows moss, spreads fertilizer over the fields 0.2~0.3 ㎏/㎡ of plant ash using stromal surface.

8. float seedling method according to claim 1, it is characterised in that：The step（10）Composite fertilizer's solution in N: P:K ratios are 19:7:14.