CN102150540B - Tobacco plug seedling method by combining artificial light with natural light - Google Patents
Tobacco plug seedling method by combining artificial light with natural light Download PDFInfo
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Abstract
The invention relates to a tobacco plug seedling method by combining artificial light with natural light. The method is characterized by comprising the following steps: preparing facilities and equipments before sowing, sowing, managing the seedlings growth in a sprouting room, managing natural-light illumination after the appearance of main leaf, and refining seedlings. After the method is used, the seedlings growing time can be shorted to be 40-50 days. The roots of the seedlings grown by the method are complete and developed, the root hairs of the seedlings are under the vigorous growth stage, and the method is convenient to transplant, fast to grow, and free of seedlings regrowing stage. Meanwhile, the step of pruning can be avoided, so that the labor consumption can be greatly reduced, and the possibility of occurence of various plant diseases and insect pests can be effectively reduced.
Description
[technical field]
The invention belongs to field of plant growing technology.More specifically, the present invention relates to the tobacco point disk seedling growing method that a kind of artificial light combines with natural daylight.
[background technology]
In recent years, to have developed into the floating seedlings be that the facility of main method is grown seedlings the stage to the tobacco seedling technology of China.Floating seedlings is exactly to adopt the very light foamed plastics of quality to process seedling-cultivating tray; In seedling-cultivating tray, add soilless culture substrates such as peat, vermiculite; Replace soil to fix the root system of cigarette seedling with matrix; The cave dish floats on the water surface, and moisture in matrix and the water bed and nutrient solution provide whole nutrients of tobacco seedling growth needs through being seeped into matrix on the capillarity.Compare with traditional seedling method, whole seedling raising process has prevented soil-borne disease insect pest, the harm of weeds and the influence of bad climate, cultivates neat, healthy and strong cigarette seedling, and the assurance flue-cured tobacco is transplanted in good time.
But from present actual production, there is following problem in tobacco floating seed rearing:
Thereby although in the 1 floating seedlings technology because replace soil to reduce soil-borne disease with matrix, what can not be ignored is that the pollution of nursery pond nutrient solution or the disease of a strain are easy to propagate into whole plant through nutrient solution;
2, impel the well developed root system of cigarette seedling owing to very difficult through moisture Control in the floating seedlings, but come balance root cap ratio through repeatedly pruning tobacco leaf.The repeatedly pruning of tobacco leaf has not only prolonged growing-seedling period, and the more important thing is to prune has increased the possibility that tobacco virus is propagated.Increasing production practices proof because the disease problem that leaf-cutting causes especially virus disease become the restrictive factor of floating seedlings technology popularization gradually.
3, mostly the root system of floating seedlings generation is owing to be the water root, and root system is long, can reach more than the 30cm, causes cigarette transplantation of seedlings inconvenience.And long term growth is in water, and water oxygen gas concentration is not enough, and the cell differentiation that has hindered root system makes the absorption function reduction of root system, and the root hair is few, and the root system vigor is poor.The overwhelming majority is grown in the aerial root in the water, to the bad adaptability of drought stress, transplants the back conversion under the native condition of drought, can not bring into play its physiological function, can be dead gradually.Therefore, there is seedling-slowing stage during the field-transplanting of cigarette seedling.
Therefore, in order to overcome these defectives that prior art exists, be necessary to develop the point disk seedling growing method that grows tobacco, the inventor has accomplished the present invention finally through a large amount of experimental studies.
[summary of the invention]
[technical problem that will solve]
The purpose of this invention is to provide the tobacco point disk seedling growing method that a kind of artificial light combines with natural daylight.
[technical scheme]
The present invention realizes through following technical proposals:
The present invention relates to the tobacco point disk seedling growing method that a kind of artificial light combines with natural daylight.The step of this method is following:
(1) sowing
With the natural compacting in cave dish of ready no native formulation media, the tobacco seed in every cave is after planting confirmed the humidity of matrix according to the kind of used tobacco seed;
(2) seedling management in the growing floor
After planting get into growing floor, this stage is adopted the artificial lighting management fully, and light source is the LED cold light source, and illumination reaches 24 hours every day; When cotyledon launches fully, use the 14-0-14 Water Soluble Compound fertilizer of 50-75PPM N, fertilising hockets with water spray, and illumination reaches 24 hours every day;
(3) the natural lighting management after true leaf occurs
After true leaf began to occur, the tobacco seedling shifted out growing floor, and preceding 2-3 days outside growing floor is phase buffer, and control is sheltered from heat or light, and shading rate is 75%, and phase buffer gets into full natural lighting management later, controls using of moisture and fertilizer during this period;
(4) the refining seedling stage
The refining seedling stage is carried out natural daylight full exposure management, during this period, and strict control moisture, fertilizer, temperature, ventilation and illumination management.
A preferred embodiment of the invention, the nothing soil formulation media described in the step (1) is 75% peat composed of rotten mosses+25% perlite, its pH value is 5.5-6.2, EC value＜0.75.
According to another kind of preferred implementation of the present invention, during sowing,, confirm soil humidity according to the requirement that used tobacco seed germinates, promptly the moisture in the matrix is pinched out easily, can see that the soil table has the flash of light of moisture, and ashen is shiny black.
According to another kind of preferred implementation of the present invention, in the step (2), after planting move in the growing floor, keep 24-25 ℃ of temperature, humidity is more than 90%; After radicle grows, keep 20-25 ℃ of temperature, humidity is more than 60%, and illumination reaches 24 hours every day.
According to another kind of preferred implementation of the present invention, the red light of the LED cold light source of use and the ratio of blue lamp are 8: 1.
According to another kind of preferred implementation of the present invention; In step (2) and step (3), watering early in the morning as far as possible, the grasp alternation of wetting and drying waters; Promptly once irrigate; Treat to irrigate again when matrix is become a cadre water for the second time, in order to prevent the excessive plant wilt that causes of water evaporates, between watering for twice, also need surperficial moisturizing.
According to another kind of preferred implementation of the present invention, in step (2) and step (3), use thin fertilizer weekly 1-2 time, concrete concentration and fertilizer type are different because of kind, use concentration to increase fertilizing amount as 20-10-20 or the 14-0-14 fertilizer of 100-150PPM N.
According to another kind of preferred implementation of the present invention, before emerging, execute 20-10-20 fertilizer at last one time, EC is 1.0-1.5.
According to another kind of preferred implementation of the present invention, in step (4), in water management, allow that seedling rewaters when slightly wilting, make root system under the condition that does not receive the solid carbon dioxide injury, as far as possible solid carbon dioxide.
The present invention below will be described in more detail in
.
The present invention relates to the tobacco point disk seedling growing method that a kind of artificial light combines with natural daylight.
The step of this method is following:
(1) sowing
With the natural compacting in cave dish of ready no native formulation media, the tobacco seed in every cave is after planting confirmed the humidity of matrix according to the kind of used tobacco seed.
According to the present invention, point disk seedling growing should be appreciated that it is a kind of seedling growing process that adopts once-seedling forming container and soilless culture.The matrix that point disk seedling growing uses is light matrix such as peat soil, vermiculite or perlite.The light specific gravity of these matrix has air permeability and good and moisture capacity, and acid-base value is moderate.It is high to adopt point disk seedling growing can reach the seedling bud ratio, and the seedling vitality is strong, and seedling density is high, and cost is low.Transplant that cave, back dish seedling can shoot up and the seedling-slowing stage that do not have tradition to grow seedlings.Point disk seedling growing helps mechanized, helps the seedling commercialization.Described cave dish is a normally used cave dish in the present technique field, for example processes cave, 128 cave dish with polystyrene material, and it is of a size of 540mm * 280mm.
Described cave dish need carry out conventional cleaning and sterilizing before use.For example, use 1-2% formalin solution or 0.05-0.1% potassium permanganate to spray, epiphragma is fumigated 1d-2d, and is clean with flushing with clean water then.With 0.5% or the 0.05-0.1% liquor potassic permanganate soaked 4 hours, clean up with clear water again.The VFT cave is coiled the layering of will staggering and is set.
The turfy soil of required specification, perlite quantity.Specification according to sowing quantity and used cave dish calculates with the soil amount, is ready to an amount of mixed native raw material.
Prior to seeding, the sowing that consult germination rate, planting percent and the different cultivars of tobacco different cultivars requires (number etc. when temperature, humidity, matrix, intensity of illumination, germination), confirms conditions such as actual temp required in the seedling raising process, humidity, illumination with this.
Prior to seeding, carry out the preparation in greenhouse, comprise and soar, clean and sterilize, growing floor will carry out the cleaning and the sterilization of flooring wall, and indoor air-conditioning and spraying apparatus will overhaul with perfect.The required miscellaneous equipment of growing seedlings like the germination car, washes in advance and sterilizes.According to the demand of seed, be ready to the germination car of the different numbers of plies to light.To the germination car of LED cold light source plate is not housed, should load onto cold light source plate LED cold light source plate in every layer in germination car, LED cold light source plate is main with red light, middle by the certain distance blue lamp that evenly distributes, its red, blue lamp ratio is 8: 1.
What matrix of the present invention adopted is no native formulation media, can select 75% peat composed of rotten mosses+25% perlite.The peat composed of rotten mosses can be the import peat composed of rotten mosses or the homemade peat composed of rotten mosses of sterilizing.The pH value of matrix is 5.5-6.2, EC value＜0.75.
At seeding time, at first soil is packed in the cave dish, real, but floating with hand, lift the cave slow, small fall then and drop on the platform 2-3 time, make native natural compacting, notice that especially four jiaos hole, cave will be filled up.
Method commonly used when adopting floating seedlings is sowed, and can adopt the punching sowing, and the punching degree of depth can be 3-5mm, accomplishes one in every cave during sowing as far as possible, broadcasts the center, does not after planting need to cover.
After planting, according to the requirement that the tobacco seed of consulting in advance germinates, confirm soil humidity: moisture can be pinched out easily, can see that the soil table has the flash of light of moisture, and ashen is shiny black.
(2) seedling management in the growing floor
After planting get into growing floor, this stage is adopted the artificial lighting management fully, and light source is a LED cold light source mentioned above, and illumination reaches 24 hours every day.Keep 24-25 ℃ of temperature during this, humidity is more than 90%.After radicle grows, keep 20-25 ℃ of temperature, humidity is more than 60%.When cotyledon launches fully, use the 14-0-14 Water Soluble Compound fertilizer of 50-75PPM N, illumination still is 24 hours every days.Fertilising hockets with water spray.This stage generally needs 15 day time.
Described water soluble composite fertilizer 14-0-14 counts 14% (weight) in said composite fertilizer gross weight with N, with P
2O
5Meter 0% (weight) is with K
2O counts 14% (weight), and described water soluble composite fertilizer is the water soluble composite fertilizer of selling in the market.
(3) the natural lighting management after true leaf occurs
After true leaf began to occur, the tobacco seedling shifted out growing floor, begins to get into the natural daylight growth conditions.Should give when just shifting out growing floor 2-3 days shade shading rate about 75%.As at fine day, remove shading screen when light is more weak in the afternoon, avoid light suddenly to strengthen, the seedling of burning.Simultaneously, initial several days will be through the surface sprinkling of being everlasting, and maintenance matrix is moistening to have higher humidity with surrounding air.Note avoiding strong wind or dry-hot wind directly to blow to seedling.Run into temperature and change suddenly, take the proper protection measure, prevent seedling is caused damage.
Spend 2-3 days and begin to get into normal management behind the phase buffer.This stage is taked full natural lighting, generally need not shade.This stage needs 10-20 days time.
During this period, note moisture, the management of applying fertilizer and transplant seedlings.
Aspect water management, the grasp alternation of wetting and drying that waters promptly once irrigates, and treats to irrigate when matrix is become a cadre water for the second time again.Watering early in the morning as far as possible.Plant surface was through one day evaporation like this, and dryer and comfortableer, unlikely band water spends the night, thereby reduced growing of disease, reduced excessive growth simultaneously.
Because of the matrix amount of cave dish seedling seldom, in order to prevent the excessive plant wilt that causes of water evaporates, between watering for twice, also need surperficial moisturizing.
Water still to have to seedling every day and do wet uneven situation generation, so will carry out artificial recharge.Careful during moisturizing, on a small quantity repeatedly, it is thin that the shower nozzle water droplet of use is wanted.
Aspect fertilizing management, use thin fertilizer weekly 1-2 time, concrete concentration and fertilizer type are different because of kind.Each fertilising must be with using after the examination of EC instrumentation.Use concentration to increase fertilizing amount as 20-10-20 and the 14-0-14 fertilizer of 100-150PPM N.Described water soluble composite fertilizer 20-10-20 counts 20% (weight) in said composite fertilizer gross weight with N, with P
2O
5Meter 10% (weight) is with K
2O counts 20% (weight), and described water soluble composite fertilizer is the water soluble composite fertilizer of selling in the market.
At the management aspect of transplanting seedlings; Dish seedling in cave is mostly sold with whole dish, and seed germination rate is not absolutely, and sowing has the two grains in a broadcast leakage hole or a cave, many phenomenon often in addition; So sell for ease; Save greenhouse space, guarantee the quality of every strain seedling, we generally transplant seedlings when cotyledon flattens.The major part of transplanting seedlings all is by manual operations, and the matrix in hole is cut out, and tells the seedling of two strains, many strains, mends full cave dish.
Should be noted that when transplanting seedlings following some: (1) is carried the previous day and is watered water, and best appropriateness is shaded when transplanting seedlings, in time water after seedling moves permeable, the survival rate of transplanting seedlings with raising.(2) operation wants light, because this moment, root system was also very very thin very weak, damages excessive extremely seedling.(3) seedling that moves past will be used the compacting of handgrip matrix, otherwise has tomography between the new and old matrix, the growth of root system OK, pull off root system during the seedling disk stripping easily.(4) to clean out the unnecessary matrix of cave panel surface after having moved seedling, otherwise be easy to generate stem-root during many water or behind the envelope dish, the one, influence the root amount in the matrix, the 2nd, stem-root tangles each other influences seedling disk stripping and transplanting.(5) note the label of cave dish, do not obscure or lose.(6) use bactericide one time after transplanting seedlings.
Described bactericide for example is a mancozeb, and it is a kind of broad spectrum protection property bactericide, and its mechanism of action is to suppress the oxidation of pyruvic acid in the thalline, can prevent and treat anthracnose, eqpidemic disease, downy mildew, leaf spot, diplostomiasis etc.; Thiophanate-methyl, it is a kind of efficient, low toxicity, low-residual, wide spectrum, systemic fungicide, tool protection and treat two kinds of effects all has good preventing and result of treatment to preventing and treating gray mold, powdery mildew, anthracnose, brown spot, leaf mold etc.; Tpn (Da Kening, TDN), it is a kind of broad-spectrum germicide, alternative organic sulfur and copper agent, the tool prevention effect is inhaled conduction in not having, can prevent and treat downy mildew of cucurbits, anthracnose, eqpidemic disease.
The consumption of broad-spectrum germicide can be the suggestion consumption in the said microbial inoculum operation instructions.
The broad-spectrum germicide administration time for example is with 70% mancozeb wettable powder 400-600 times liquid, at a distance from spraying once after 7-10 days, sprays 2-3 time altogether again.With 75% wetting powder 500-800 times of liquid spraying control,, spray 2-3 time altogether at a distance from spraying again once after 7-10 days.
(4) the refining seedling stage
The refining seedling stage is carried out natural daylight full exposure management, during this period, and strict control moisture, fertilizer, temperature, ventilation and illumination management.
Water management: allow that seedling rewaters when slightly wilting.Let root system under the condition that does not receive the solid carbon dioxide injury, as far as possible solid carbon dioxide.
Fertilizer management: before emerging, execute 20-10-20 fertilizer at last one time, EC is 1.0-1.5.Purpose is the transplanting seedling time after shortening kind of the transplantation of seedlings, it is taken root, continued growth rapidly.
Temperature treatment:,, improve transplanting survival rate in order to strengthen the resistance of seedling because the greenhouse growing environment of seedling differs greatly with open-air natural environment; We take to reduce temperature, reduce fertilising, reduce water (unlikely wilting); Strengthen and ventilate, seedling is refined in measures such as enhancing illumination.Refine seedling stage generally about 5 days.
[beneficial effect]
Method of the present invention has following beneficial effect:
(1) cycle in strong sprout shortens to 40-50 days by 60-70 days of floating seedlings.(2) complete prosperity of seedling root system and the root hair bred of method of the present invention is in the vigorous growth stage, and it is convenient to transplant.(3) there is not seedling-slowing stage in growth rapidly.The tobacco seedling that method of the present invention is bred is because seedling age is short, Gen Maofada, and no spiral root, seedling vitality is strong, so does not have seedling-slowing stage basically, is particularly suitable for mountain planting.(4) laborsaving saving of labor.The seedling that method of the present invention is bred does not need to prune, and uses the moisture Control root/shoot ratio, reduces labour expenditure greatly.(5) no damage by disease and insect.The cigarette seedling that method of the present invention is bred is because the pruning of obstructed overnutrition liquid pool and tobacco leaf, stopped the spread disease possibility of insect pest of these measures.
[embodiment]
Embodiment 1
(1) sowing
Plan is transplanted the Maryland seedling to the land for growing field crops field planting before and after May 15.According to the growth rate of Maryland, nursery stage is roughly 45 days.Be ready to sowing media and seedling culture hole plate at late March.Matrix is 75% peat composed of rotten mosses+25% perlite, and its pH value is 5.5-6.2, EC value＜0.75.Seedling culture hole plate adopts VFT cave, 72 cave dish.The cave dish needs to soak 4 hours with 0.5% liquor potassic permanganate, cleans up with clear water again.
Prior to seeding, carry out the preparation in greenhouse, comprise and soar, clean and sterilize, growing floor will carry out the cleaning and the sterilization of flooring wall, and indoor air-conditioning and spraying apparatus will overhaul with perfect.The required miscellaneous equipment of growing seedlings like the germination car, washes in advance and sterilizes.According to the demand of seed, be ready to the germination car of the different numbers of plies to light.To the germination car of LED cold light source plate is not housed, should load onto cold light source plate LED cold light source plate in every layer in germination car, its red, blue lamp ratio is 8: 1.
Formal sowing before and after March 28.During sowing, at first soil is packed in the cave dish, real, but floating with hand, lift the cave slow, small fall then and drop on the platform 2-3 time, make native natural compacting, notice that especially four jiaos hole, cave will be filled up.
Sow one in every cave, broadcast the center, after planting do not need to cover.After planting water, soil humidity can be pinched out with moisture easily, can see that the soil table has the flash of light of moisture, and ashen is shiny black to be as the criterion.
(2) seedling management in the growing floor
After planting get into growing floor.Keep 24-25 ℃ of temperature during this, humidity is more than 90%.Reach 24 hour with the irradiation of LED cold light source every day.
Before and after April 2, radicle grows, and at this moment keeps temperature 20-25 ℃, and humidity is more than 60%.
Before and after April 7, cotyledon launches fully.Begin to use the 14-0-14 Water Soluble Compound fertilizer of 75PPM N during this, illumination still is 24 hours every days.
(3) the natural lighting management after true leaf occurs
Before and after April 12, true leaf begins to occur, and the tobacco seedling is shifted out growing floor, begins to get into the natural daylight growth conditions.Give when just shifting out growing floor 2-3 days shade shading rate about 75%.As at fine day, remove shading screen when light is more weak in the afternoon, avoid light suddenly to strengthen, the seedling of burning.Simultaneously, maintenance matrix is moistening to have higher humidity with surrounding air through the surface sprinkling of being everlasting in initial several days.Note avoiding strong wind or dry-hot wind directly to blow to seedling.Run into temperature and change suddenly, take the proper protection measure, prevent seedling is caused damage.
Spend behind 2-3 days phase buffers promptly during April 15 to May 3, begin to get into normal management.This stage is taked full natural lighting, generally need not shade.
During this period, alternation of wetting and drying is grasped in water management, promptly once irrigates, and treats to irrigate when matrix is become a cadre water for the second time again.Watering early in the morning.Between watering for twice, also need artificial recharge.
Aspect fertilizing management, replace 20-10-20 and the 14-0-14 fertilizer that application concentration is 150PPM N according to the frequency of weekly fertilizer.
In above-mentioned time range, transplant seedlings.The manual operations of transplanting seedlings cuts out the matrix in hole, tells the seedling of two strains, many strains, mends full each cave dish.Prevent and treat disease with 500-800 times of liquid spraying of 75% thiophanate methyl wetting powder after transplanting seedlings, spray once again after 8 days.
(4) the refining seedling stage
To about May 5, began to get into the refining seedling stage.Carry out natural daylight full exposure management during this, during this period, strict control moisture, fertilizer, temperature, ventilation and illumination management.
Water management: allow that seedling rewaters when slightly wilting.Let root system under the condition that does not receive the solid carbon dioxide injury, as far as possible solid carbon dioxide.
Fertilizer management: before emerging, execute 20-10-20 fertilizer at last one time, EC is 1.0-1.5.
Mays 10 front and back take to reduce temperature, reduce fertilising, reduce and water (unlikely wilting), strengthen and ventilate, strengthen measure such as illumination and refine seedling.Delivery before and after May 15.
Comparative example: the tobacco point disk seedling growing method of prior art
(1) early-stage preparations and sowing
Plan is transplanted the Maryland seedling to the land for growing field crops field planting before and after May 15.The preceding culture facilities such as seedling growth greenhouse, nutrition pond that are ready to according to the conventional seedbed system program of sowing.Be ready to sowing media and seedling culture hole plate simultaneously.Matrix is 75% peat composed of rotten mosses+25% perlite, and its pH value is 5.5-6.2, EC value＜0.75.Seedling culture hole plate adopts VFT cave, 72 cave dish.The cave dish needs to soak 4 hours with 0.5% liquor potassic permanganate, cleans up with clear water again.
Sowing pours into cleaning, free of contamination water the previous day in the nutrition pond, the pH value is 6.0-7.5 scope (a forbidding swag water).It is dark for the first time to add water 5-6cm.The back that discharges water adds the grow seedlings standard placement tobacco leaf composite fertilizer special 10-10-20 of fertilizer (10g/ dish) of 10g according to a floating dish.
According to sowing after the conventional sabot.Sowing time was about March 8.Directly by hand or the sowing machine sowing go into 1-2 grain pelleted seed.After seed is sowed, cover the matrix of 1-2mm, make seed indistinct.
(2) nursery stage management
Keep flat in the nutrition pond broadcasting the seedling dish of planting., that implantation hole is logical with thin anvil after March 9 if the implantation hole that has can not absorb water, make the matrix suction guarantee the abundant cracking of seed outer coatings.
Must cover the strict insulation of plastic sheeting for farm use before emerging completely, promote the cracking of seed to sprout, if but run into fine day; Period at noon (morning, 10:00 was to 4:00 in afternoon) temperature of shed can increase suddenly; It is very high that humidity can become, and at this moment should open the two ends of canopy and carry out ventilation dewetting, big-and-middle canopy door and window.The maximum air temperature is 15 ℃ before emerging, 10 ℃ of water temperatures.
After emerging to March 18 approximately, the management before taking equally to emerge, the generation that prevention low temperature causes the cigarette seedling to damage to plants caused by sudden drop in temperature.Emerge to little cross phase temperature of shed should not be above 30 ℃.The same day, samming was greater than 14 ℃, opened air vent in the both sides of hut, and every side is opened three (high about 20cm, wide about 30cm), and the two ends of opening canopy.
To about March 29, get into little cross during the phase, remove look king-sized the variation seedling and the late weak seedling of looking little of emerging, the cigarette seedling of the neat and consistent of selecting and remain, seedling 1 strain is stayed in every cave.It is dark during this nutrition pool inner water to be added to 8-10cm, simultaneously adds the grow seedlings standard of fertilizer (20g/ dish) of 20g according to a floating dish and uses tobacco composite fertilizer special 10-10-20.
Leaf-cutting for the first time when the about 4-5cm of cigarette seedling stem height.Leaf-cutting is for the second time carried out straight snips when the about 7-8cm of stem height.The cigarette seedling gets into into seedling stage and carries out leaf-cutting for the third time, straight snips.General 3 times of leaf-cutting in seedling stage, each 5-7 days at interval, 5-7 days finished before transplanting.
Leaf-cutting should select fine morning 10:00 to carry out when dry to blade between the afternoon 4:00.The broken leaf of at every turn cutting should in time clean out the seedbed, and concentrates and dispose.
(3) the refining seedling stage
The fertilizer that May 9 began to cut off the water supply, breaks refines seedling 2-3 time, wilts noon with the cigarette seedling, can revert to suitable sooner or later.May 13 stopped to refine seedling, put into the nutrition pond to the seedling dish, let the cigarette seedling fully suction liquid manure, was transplanted to the land for growing field crops again.
Claims (7)
1. tobacco point disk seedling growing method that artificial light combines with natural daylight is characterized in that the step of this method is following:
(1) sowing
With the natural compacting in cave dish of ready no native formulation media, the tobacco seed in every cave is after planting confirmed the humidity of matrix according to the kind of used tobacco seed;
(2) seedling management in the growing floor
After planting get into growing floor, this stage is adopted artificial lighting management fully, and light source is the LED cold light source, 24 hours every days of illumination; When cotyledon launches fully, use the 14-0-14 Water Soluble Compound fertilizer of 50-75PPM N, fertilising hockets with water spray, 24 hours every days of illumination;
(3) the natural lighting management after true leaf occurs
After true leaf began to occur, the tobacco seedling shifted out growing floor, and preceding 2-3 days outside growing floor is phase buffer, and control is sheltered from heat or light, and shading rate is 75%, and phase buffer gets into full natural lighting management later, controls using of moisture and fertilizer during this period;
(4) the refining seedling stage
The refining seedling stage is carried out natural daylight full exposure management, during this period, and strict control moisture, fertilizer, temperature, ventilation and illumination management.
2. method according to claim 1 is characterized in that the nothing soil formulation media described in the step (1) is 75% peat composed of rotten mosses+25% perlite, and its pH value is 5.5-6.2, EC value＜0.75.
3. method according to claim 1 when it is characterized in that sowing, according to the requirement that used tobacco seed germinates, is confirmed soil humidity, and promptly the moisture in the matrix is pinched out easily, can see that the soil table has the flash of light of moisture, and ashen is shiny black.
4. method according to claim 1 is characterized in that after planting moving in the growing floor in the step (2), keeps 24-25 ℃ of temperature, and humidity is more than 90%; After radicle grows, keep 20-25 ℃ of temperature, humidity is more than 60%, 24 hours every days of illumination.
5. method according to claim 4, the red light of the LED cold light source that it is characterized in that using and the ratio of blue lamp are 8: 1.
6. method according to claim 1 is characterized in that in step (2) and step (3), watering early in the morning, and the grasp alternation of wetting and drying that waters promptly once irrigates, and treats to irrigate when matrix is become a cadre water for the second time again, between watering for twice, also needs surperficial moisturizing.
7. method according to claim 1 is characterized in that in step (4), in water management, allows that seedling rewaters when slightly wilting, and makes root system under the condition that does not receive the solid carbon dioxide injury, as far as possible solid carbon dioxide.
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| CN103688828A (en) * | 2013-08-26 | 2014-04-02 | 贵州省烟草科学研究院 | Three-dimensional aerial fog seedling method for flue-cured tobacco |
| CN106888942A (en) * | 2015-12-18 | 2017-06-27 | 辽宁依农农业科技有限责任公司 | A kind of Vegetables Factory Plantation Growing Seedlings formulation media |
| JP7382229B2 (en) * | 2017-03-07 | 2023-11-16 | 三菱ケミカルアクア・ソリューションズ株式会社 | Cultivation method |
| CN108271674A (en) * | 2018-04-02 | 2018-07-13 | 南平市烟草公司建瓯分公司 | A kind of tobacco seedling method |
| CN109588294B (en) * | 2018-12-29 | 2023-03-31 | 中国农业科学院烟草研究所 | Tobacco generation adding method based on water culture |
| CN110447521A (en) * | 2019-07-25 | 2019-11-15 | 安徽西山湖农业发展有限公司 | A method of oil tea seedling is bred using container for plant growth |
| CN111448978B (en) * | 2019-09-18 | 2022-10-14 | 重庆市农业科学院 | Artificial light-variable-light-controlled European primula plug seedling method |
| CN117243018A (en) * | 2023-10-25 | 2023-12-19 | 赣州市农业科学研究所(赣州市烟草科学研究所) | Screening method of drought-enduring special rice seeds |
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| CN1463584A (en) * | 2002-06-18 | 2003-12-31 | 贵州省烟草科学研究所 | Tobacco nursery sock growing method using tray water bed |
| CN100352336C (en) * | 2005-12-15 | 2007-12-05 | 楚雄州烟草科学研究所 | Sand cultivation technique for flue cured-tobacco seedling |
| CN101473755A (en) * | 2009-01-24 | 2009-07-08 | 云南省烟草公司玉溪市公司 | Floating seedling cultivation for flue-cured tobacco |
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