WO2017164266A1 - Procédé de croissance de plantule - Google Patents

Procédé de croissance de plantule Download PDF

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Publication number
WO2017164266A1
WO2017164266A1 PCT/JP2017/011571 JP2017011571W WO2017164266A1 WO 2017164266 A1 WO2017164266 A1 WO 2017164266A1 JP 2017011571 W JP2017011571 W JP 2017011571W WO 2017164266 A1 WO2017164266 A1 WO 2017164266A1
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light
illumination light
day
seedling raising
raising method
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PCT/JP2017/011571
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English (en)
Japanese (ja)
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米田　正
恭成 渡邉
篠田　晶子
明正 中野
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昭和電工株式会社
国立研究開発法人農業・食品産業技術総合研究機構
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Publication of WO2017164266A1 publication Critical patent/WO2017164266A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/05—Fruit crops, e.g. strawberries, tomatoes or cucumbers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/40—Fabaceae, e.g. beans or peas

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  • the present invention relates to a method for raising fruit vegetable seedlings, and more specifically, a seedling method for cultivating high-quality fruit vegetable seedlings in which roots are well developed after planting by irradiating the fruit vegetable seedlings with artificial light and the growth is good.
  • This application claims priority on March 24, 2016 based on Japanese Patent Application No. 2016-060738 filed in Japan, the contents of which are incorporated herein by reference.
  • Patent Document 1 discloses that a light-emitting diode that emits blue light (400 to 480 nm) and a light-emitting diode that emits red light (620 to 700 nm) are turned on simultaneously or alternately, thereby culturing, growing and cultivating plants. And a light source for plant cultivation that irradiates light energy for tissue culture. This light source for plant cultivation is intended to cultivate a plant with high energy efficiency by irradiating only light having a wavelength matching the light absorption peak of chlorophyll (around 450 nm and around 660 nm).
  • Patent Document 1 stipulates that blue light and red light may be irradiated simultaneously or alternately (see [Claim 1]).
  • Patent Document 1 in comparison between single irradiation of blue light or red light and simultaneous irradiation of blue light and red light, healthy growth similar to cultivation in sunlight under the simultaneous irradiation (the length of the single irradiation) (See paragraph [0011] in the document), but the effect of promoting growth when blue light and red light are alternately applied has not been confirmed. Therefore, Patent Document 1 does not substantially disclose a plant cultivation method by alternately irradiating blue light and red light.
  • Patent Document 2 discloses a cultivation light control method for cultivating plants by irradiating cultivation light under an artificially controlled light-dark cycle.
  • the light / dark cycle has a light period when the cultivation light is irradiated, and a light period less than the light quantity in this light period, or a dark period with no light amount.
  • the cycle of the light / dark cycle is different from the inherent free-run cycle of the plant, and the dark period is set to a time zone with low photosynthetic activity, or the light cycle is set to a time zone with high photosynthetic activity. .
  • Patent Document 3 the step of irradiating a plant with red illumination light and the step of irradiating the same plant with blue illumination light are alternately repeated with the irradiation time of each step being 3 hours or more and less than 48 hours.
  • a plant cultivation method is disclosed.
  • Patent Document 4 the procedure for irradiating germinated fruit vegetables with red light and the procedure for irradiating germinated fruit vegetables with blue light are alternately and continuously performed to differentiate flower buds.
  • a method for cultivating fruit vegetables having a step and a step of irradiating the fruit vegetables with differentiated flower buds using a fluorescent lamp is disclosed. This cultivation method is characterized in that the procedure of irradiating germinated fruit and vegetables with red light and the procedure of irradiating germinated fruit and vegetables with blue light are performed within a range of 3 to 48 hours each time.
  • Patent Document 5 discloses a plant cultivation method in which the step (A) of irradiating a plant with red light and the step (B) of irradiating a plant with blue light are independently performed within a certain period of time. Yes.
  • the cultivation method the photosynthetic photon flux density of the red light in Step (A) was greater than 150 [mu] mol / m 2 s, the photosynthetic photon flux density of the blue light in the step (B) is larger than 50 [mu] mol / m 2 s
  • the carbon dioxide concentration in the plant cultivation environment in the step (A) and the step (B) is 1300 ppm or more.
  • JP-A-8-103167 JP 2012-179909 A Japanese Patent No. 5729786 Japanese Patent No. 5723898 Japanese Patent Laying-Open No. 2015-204801
  • the seedlings of fruit vegetables obtained by conventional techniques as disclosed in Patent Documents 1 to 5 have a low ratio of the root weight to the above-ground weight (R / T ratio), and the root part is sufficiently developed after planting. There is a tendency not to.
  • the present invention has been made in view of the above circumstances, and is a fruit vegetable that has good root growth after planting, is capable of growing a high-quality fruit vegetable seedling that is homogeneous, well-established, and has good growth at low cost.
  • the object is to provide a method for raising seedlings.
  • the present invention is as follows.
  • [1] A seedling raising method in which red and blue illumination light, which is artificial light, are alternately and repeatedly applied to seedlings of fruit vegetables, and the red illumination light and the blue illumination light are applied to the cultivation surface.
  • the day cumulative photosynthetically active photon amount respectively 10 ⁇ 25mol / m 2 ⁇ day -1, and 4 ⁇ 15mol / m 2 ⁇ day -1, the sum of the red illumination light, the daily irradiation time of the blue illumination light
  • [2] The seedling raising method according to [1], wherein an irradiation light amount ratio of the red illumination light is 50% or more and 90% or less.
  • [6] The method for raising seedlings according to [5], wherein any one of eggplant, tomato, pepper, pepper, pepper, and paprika is used as the fruit vegetable of the solanaceous family.
  • [7] The seedling raising method according to [5], wherein tomatoes are used as the fruit vegetables of the solanaceous family.
  • [8] The seedling raising according to any one of [1] to [7], wherein light having a peak wavelength of 570 nm to 730 nm and a center wavelength of 645 nm to 680 nm is used as the red illumination light Method.
  • a method for raising seedlings of fruit vegetable seedlings capable of growing inexpensively seedlings of high quality fruit and vegetable seedlings whose roots are well developed after planting, homogeneous and well-established, and having good growth after planting. be able to.
  • the seedling raising method according to an embodiment of the present invention is performed by alternately and repeatedly irradiating fruit and vegetable seedlings with red illumination light and blue illumination light, which are artificial lights.
  • “alternate and repeat” means that irradiation with red illumination light and irradiation with blue illumination light are performed alternately, and this is repeated two or more times. Irradiation time with red illumination light and irradiation time with blue illumination light Between these, the time which does not irradiate light may be provided, and it is not necessary to provide. That is, the irradiation with the red illumination light and the irradiation with the blue illumination light may be performed continuously or may not be performed continuously.
  • the seedling raising method of this embodiment is characterized in that a specific photon amount and irradiation time are determined so as to satisfy the following conditions. That is, the daily integrated photosynthesis effective light quantum amount of the red illumination light is set to 10 to 25 mol / m 2 ⁇ day ⁇ 1 (10 mol / m 2 ⁇ day ⁇ 1 to 25 mol / m 2 ⁇ day ⁇ 1 or less). Also, the day cumulative photosynthetic photon amount of blue illumination light, and 4 ⁇ 15mol / m 2 ⁇ day -1 (4mol / m 2 ⁇ day -1 or more 15mol / m 2 ⁇ day -1 or less). The total irradiation time per day of the red illumination light and the blue illumination light is 16 to 24 hours (16 hours to 24 hours).
  • Daily photosynthesis effective photon quantity that is, photon quantity of light irradiated per unit area per day is equal to the photosynthesis effective photon flux density measured using a photonometer on the cultivation surface. Calculated by multiplying the irradiation time per day.
  • a cultivation surface means the place which puts support bodies, such as a pot for growing a seedling, and a cell tray.
  • Day cumulative photosynthetic photon amount of red illumination light within the range 10 ⁇ 25mol / m 2 ⁇ day -1 described above, 14 ⁇ 24mol / m 2 ⁇ day -1 (14mol / m 2 ⁇ day is preferably set to -1 or more 24mol / m 2 ⁇ day -1 or less), 18 ⁇ 23mol / m 2 ⁇ day -1 and (18mol / m 2 ⁇ day -1 or more 23mol / m 2 ⁇ day -1 or less) More preferably.
  • the daily integrated photosynthesis effective photon amount of the red irradiation light is less than 10 mol / m 2 , the growth of the seedlings is deteriorated and good seedlings cannot be produced. On the other hand, even if the daily integrated photosynthesis effective photon amount of the red irradiation light exceeds 25 mol / m 2 , the growth of the seedling does not change, and energy is wasted.
  • Day cumulative photosynthetic photon amount of the blue illumination light within the range 4 ⁇ 15mol / m 2 ⁇ day -1 described above, 6 ⁇ 12mol / m 2 ⁇ day -1 (6mol / m 2 ⁇ day is preferably set to -1 or more 12mol / m 2 ⁇ day -1 or less), 7 ⁇ 10mol / m 2 ⁇ day -1 (7mol / m 2 ⁇ day -1 or more 10mol / m 2 ⁇ day -1 or less) and More preferably.
  • the daily photosynthesis effective photon amount of the blue irradiation light is less than 4 mol / m 2 ⁇ day ⁇ 1 , the growth of the seedlings deteriorates and good seedlings cannot be grown. On the other hand, even if the daily integrated photosynthesis effective photon amount of blue irradiation light exceeds 15 mol / m 2 ⁇ day ⁇ 1 , the growth of the seedling does not change, and energy is wasted.
  • the light irradiation time per day combining the irradiation time of the red illumination light and the irradiation time of the blue illumination light, shall be 18 to 24 hours (18 hours or more and 24 hours or less) in the above range of 16 to 24 hours. Is preferred. If the irradiation time of the red illumination light is less than 16 hours, the growth of the seedlings is deteriorated and it is difficult to perform good seedling raising.
  • the ratio of the irradiation time of red illumination light is preferably 50% or more and 90% or less, and more preferably 60% or more and 80% or less. If the irradiation time ratio of the red illumination light is lower than 50%, the growth of the seedlings is deteriorated. If the irradiation time ratio is higher than 90%, the seedlings are grown.
  • the light emitting diode It is preferable to use an optical semiconductor element such as (LED) or laser diode (LD).
  • LED light emitting diode
  • LD laser diode
  • the EL may be an organic EL or an inorganic EL.
  • the red illumination light in this embodiment is illumination light including red light having at least a peak wavelength of 570 nm to 730 nm and a center wavelength of 645 nm to 680 nm.
  • the red illumination light may include light in a wavelength range different from that of red light, but preferably does not include blue light described below, and if the light does not include light in a wavelength range different from red light, preferable. That is, it is more preferable that the red illumination light is light composed only of red light.
  • the blue illumination light in this embodiment is illumination light including blue light having a peak wavelength of 400 nm to 515 nm and a center wavelength of 440 nm to 460 nm.
  • the blue illumination light may include light in a wavelength range different from that of blue light, but preferably does not include the red light described above, and if it does not include light in a wavelength range different from that of blue light, More preferred. That is, it is more preferable that the blue illumination light is light composed only of blue light.
  • the temperature at the time of seedling may be a temperature at which seedling is generally raised, but is specifically preferably 16 to 28 ° C, more preferably 17 to 26 ° C. 18 to 25 ° C. is more preferable.
  • the concentration of surrounding carbon dioxide at the time of raising seedlings is not limited, and may be set to the same level as normal atmospheric concentration, or may be set to a high concentration by adding carbon dioxide.
  • the set concentration is preferably 400 to 1200 ppm, more preferably 600 to 1100 ppm, and even more preferably 700 to 1000 ppm, from the viewpoints of economy and influence on growth.
  • Fertilizers used for raising seedlings may be those used for general raising seedlings, and commercially available fertilizers can be used. Moreover, the active ingredient of a fertilizer can also be suitably mix
  • the fruit and vegetables targeted by the method for raising seedlings means a plant that eats fruits or seeds among vegetables.
  • fruits and vegetables for example, those belonging to any one of eggplant family, cucurbitaceae family, legume family and rose family can be used.
  • eggplant, tomato, pepper, pepper, capsicum, paprika, etc. can be used as the fruit vegetable of the solanaceous family.
  • cucurbitaceae fruits and vegetables for example, any of cucumbers, pumpkins, shirouri, makuwauri, bitter gourd, zucchini, tougan, watermelon, melon and the like can be used.
  • legumes for example, any one of green beans, green peas, broad beans, green beans and the like can be used.
  • fruits and vegetables of the Rosaceae family for example, strawberries can be used.
  • the total irradiation time per day is 16 to 24 hours, and the fruit and vegetable seedlings are irradiated alternately and continuously.
  • the experiment for raising seedlings of fruit vegetables was conducted using the seedling raising method of the present invention. This experiment was conducted in a seedling terrace (artificial photo-nurturing seedling device 4 stages ⁇ 6 shelves, Mitsubishi Plastics Agridream). As an experimental sample, 'Momotaro York' (Takii seedling) tomato was used. Each cell constituting a 72-hole cell tray (Cell Tray AP, manufactured by Toagokogyo Co., Ltd.) was filled with culture soil (Seed Culture No. 1, manufactured by Sumirin), and one seed was seeded per cell.
  • the seeded culture soil is housed together with a cell tray in a sprouting device maintained at 27 ° C. for 3 days, and planted on a seedling terrace on the third day after sowing (day 0 of planting), and planted on the 21st day with light irradiation. Raised seedlings.
  • a culture solution a solution obtained by dissolving 2.93 mL of high tempo Cu (manufactured by Sumitomo Chemical Co., Ltd.) and 0.98 mL of high tempo Ar (manufactured by Sumitomo Chemical Co., Ltd.) per liter is used, and its electric conductivity (EC) is 1.6 dS. / M, pH was set to 5.9.
  • Irrigation was performed once a day for 10 minutes (from 8:00 to 8:10), and the culture solution was filled to a height of about 30 mm from the bottom of the cell tray.
  • the seedling raising temperature was 18 ° C. between 0:00 and 8:00 every day and 25 ° C. between 8:00 and 0:00.
  • the CO 2 concentration in the seedling terrace was 1000 ppm.
  • red illumination light and blue illumination light (RRB, product number: UL0005 # 01-0R, LED chip: 160 red + 80 blue, peak wavelength: red 660 nm, blue 450 nm, manufactured by Showa Denko KK)
  • RRB red illumination light and blue illumination light
  • LED chip 160 red + 80 blue
  • peak wavelength red 660 nm
  • blue 450 nm manufactured by Showa Denko KK
  • a straight tube type LED illumination with Each color was dimmed independently by a dimmer with a timer, and the amount of irradiation light was adjusted (abbreviation: red irradiation light; R, blue irradiation light; expressed as B).
  • Examples 1 to 4 were carried out by changing the irradiation conditions with LEDs (LED irradiation section). Specific LED irradiation conditions in each example were set as follows.
  • Example 1 From planting day 0 planting day 21, one day, is irradiated with 0 pm ⁇ B166 ⁇ mol ⁇ m -2 ⁇ s -1 at 12 o'clock, then, R500 ⁇ mol ⁇ m -2 ⁇ s at 12 to 24 o'clock -1 irradiation.
  • the DLI of R is 21.6 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the DLI of B is 7.2 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the total DLI of R and B is 28.8 mol ⁇ m ⁇ 2.
  • Dat ⁇ 1 the light irradiation time per day was 24 hours, and the irradiation light amount ratio of the red illumination light was 75%.
  • Example 2 For 14 days from the 0th day to the 14th day of planting, B166 ⁇ mol ⁇ m ⁇ 2 ⁇ s ⁇ 1 was irradiated from 0 o'clock to 12 o'clock in the day, and then R500 ⁇ mol ⁇ m between 12 o'clock and 24 o'clock. -2 ⁇ s -1 was irradiated.
  • the DLI of R is 21.6 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the DLI of B is 7.2 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the total DLI of R and B is 28.8 mol ⁇ m ⁇ 2.
  • -Day -1 light irradiation time per day was 24 hours; and the irradiation light amount ratio of red illumination light was 75%.
  • the DLI of R was 21.6 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the DLI of B was 7.2 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • R between the 0th planting and the 21st planting.
  • the total DLI of B was 28.8 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the light irradiation time per day was 22 hours
  • the irradiation light amount ratio of red illumination light was 75%.
  • Example 3 (Example 3, AI-D4) Light irradiation for 7 days from the 14th day of planting to the 21st day of planting was performed with B200 ⁇ ⁇ m ⁇ 2 ⁇ s ⁇ 1 from 8 o'clock to 18 o'clock of the day, and then from 18 o'clock to 24 o'clock and 0 o'clock. The same operation as in Example 2 was performed except that R600 ⁇ mol ⁇ m ⁇ 2 ⁇ s ⁇ 1 was irradiated between -4 hours and the dark period was set between 4 o'clock and 8 o'clock.
  • the DLI of R was 21.6 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the DLI of B was 7.2 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • R between the 0th planting and the 21st planting.
  • the total DLI of B was set to 28.8 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1 .
  • the light irradiation time per day was 24 hours from the 0th planting day to the 14th planting day, and 20 hours from the 14th planting day to the 21st planting day.
  • the irradiation light amount ratio of the red illumination light was set to 75%.
  • Example 4 (Example 4, AI-D6) Light irradiation for 7 days from the 14th day of planting to the 21st day of planting was performed with B222 ⁇ mol ⁇ m ⁇ 2 ⁇ s ⁇ 1 between 8 o'clock and 17 o'clock of the day, and then from 17:00 to 24 o'clock and 0 The same procedure as in Example 2 was conducted, except that R667 ⁇ mol ⁇ m ⁇ 2 ⁇ s ⁇ 1 was irradiated between 2:00 and 2:00 and the dark period was set between 2:00 and 8:00.
  • the DLI of R was 21.6 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • the DLI of B was 7.2 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1
  • R between the 0th planting and the 21st planting.
  • the total DLI of B was set to 28.8 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1 .
  • the light irradiation time per day was 24 hours from the 0th planting day to the 14th planting day, and 18 hours from the 14th planting day to the 21st planting day.
  • the irradiation light amount ratio of the red illumination light was set to 75%.
  • the photosynthetic effective photon flux density (PPFD) was set to 503 ⁇ mol ⁇ m ⁇ 2 ⁇ s ⁇ 1
  • the DLI was set to 29.0 mol ⁇ m ⁇ 2 ⁇ day ⁇ 1 .
  • FIG. 1 is a diagram for explaining an outline of a rooting test performed on seedlings obtained under the conditions of Examples 1 to 4 and Comparative Example 1.
  • the state at the time of starting planting (day 0 of planting) is shown on the left side, and the state immersed in the culture solution n days after planting (n is 1 to 21) is shown on the right side.
  • R n and R 0 mean root weights at the time of planting n day and 0 day, respectively.
  • T n and T 0 mean the above-ground weights on the nth day of planting and the 0th day, respectively.
  • a hydrophilic non-woven fabric 30 (manufactured by Toyobo Co., Ltd., germ guard, thickness) is contained in the culture solution 20 (manufactured by Otsuka Chemical Co., Ltd., 1 unit of Otsuka A) contained in a container 10. 2 mm, 0.11 g ⁇ cm ⁇ 3 ), and black non-woven fabric 40 (manufactured by Unitika Ltd., Love Sheet Black, 20307 BKD, thickness 0.13 mm, water permeability 85%, light shielding rate 75%) did.
  • the cell 50 which planted the seedling on the black nonwoven fabric 40 was mounted. The bottom of the cell 50 is removed so that liquid can be supplied at the root portion of the seedling.
  • both the hydrophilic non-woven fabric 30 and the black non-woven fabric 40 are immersed in the culture solution 20, the supply of the culture solution 20 to the root portion of the seedling is sufficiently performed through both the fabrics 30 and 40. Become. Moreover, since the periphery of the seedling is shielded from light by the silver multi 60, the roots are not dried during the treatment period.
  • FIG. 2 is a graph showing the R / T ratio before the start of the rooting test (day 0 of planting) and after the start (day 17 of planting).
  • the R / T ratio was calculated by dividing the root weight by the above-ground weight.
  • Examples 1 to 4 (AI-D0, AI-D2, AI-D4, AI-D6) were more at the end of the seedling period (day 0 of planting).
  • the ratio of the root weight to the above-ground weight of the seedling R / T ratio
  • FIG. 3 is a graph of the root increase rate ratio (establishment constant) obtained in Examples 1 to 4 (AI-D0, AI-D2, AI-D4, AI-D6) and Comparative Example 1 (Ctrl.). is there.
  • the root increase rate ratio was calculated by dividing the increase in root weight (R n -R 0 ) by the increase in above-ground weight (T n -T 0 ) as shown in the following equation.
  • Examples 1 to 4 Compared with Comparative Example 1, it was found that Examples 1 to 4 tended to have a higher root increase rate, and in Examples 2 to 4 in particular, the difference was noticeable. In Examples 2 to 4, it is considered that the increase in roots is further promoted by providing a dark period in which no light irradiation is performed.
  • FIG. 4 is a graph of specific root lengths obtained in Examples 1 to 4 (AI-D0, AI-D2, AI-D4, AI-D6) and Comparative Example 1 (Ctrl.).
  • the specific root length was calculated by dividing the root length by the root weight. Since the specific root length was smaller in Examples 1 to 4, it was shown that thicker roots were rooted in Examples 1 to 4 after planting than in Comparative Examples. From the above results, it is considered that there is a possibility that the subsequent growth of fruit and vegetable seedlings can be stabilized by making the irradiation conditions of artificial light appropriate.
  • the seedling raising method of the present invention by using artificial light, a high quality fruit vegetable seedling having roots well developed after planting, homogeneous, well-established and having good growth can be grown at low cost. Therefore, the present invention can be widely used as a technique for efficiently artificially cultivating high-quality fruit vegetables.
  • container 20 culture solution 30: hydrophilic non-woven fabric 40: black non-woven fabric 50: cell 60: silver multi

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  • Life Sciences & Earth Sciences (AREA)
  • Botany (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Cultivation Of Plants (AREA)

Abstract

La présente invention concerne un procédé de croissance d'une plantule grâce auquel des plantules de plantes fruitières et de légumes sont irradiées de manière alternative et répétée avec de la lumière d'éclairage rouge et de la lumière d'éclairage bleue, qui sont de la lumière artificielle, dans laquelle les quantités quotidiennes cumulées de photons efficaces pour la photosynthèse de lumière d'éclairage rouge et de lumière d'éclairage bleue sur une surface de culture sont de 10 à 25 moles/m2•jours-1 et de 4 à 15 moles/m2•jours-1, respectivement, et la durée d'éclairage totale quotidienne de la lumière d'éclairage rouge et de la lumière d'éclairage bleue est de 16 à 24 heures.
PCT/JP2017/011571 2016-03-24 2017-03-23 Procédé de croissance de plantule WO2017164266A1 (fr)

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JP2016060738A JP2017169509A (ja) 2016-03-24 2016-03-24 育苗方法

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