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Method for controlling excessive growth of cucumber seedlings by using light-emitting diode (LED) light source

An LED light source and seedling technology, applied in the field of plant cultivation, can solve the problems of high heat generation, inappropriateness and high energy consumption, and achieve the effect of long service life and remarkable effect.

Inactive Publication Date: 2012-03-28
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the artificial light sources used in facility seedling cultivation include ordinary incandescent lamps, high-pressure mercury lamps, high-pressure sodium lamps, etc. Most of these light sources are not suitable for high-density industrial seedling cultivation due to their wide spectrum, high calorific value, and high energy consumption. Optimal light source

Method used

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  • Method for controlling excessive growth of cucumber seedlings by using light-emitting diode (LED) light source
  • Method for controlling excessive growth of cucumber seedlings by using light-emitting diode (LED) light source
  • Method for controlling excessive growth of cucumber seedlings by using light-emitting diode (LED) light source

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Container seedlings were adopted, and cucumber seeds were sown in 72 or 50-hole hole trays after germination, and the seedling substrate was prepared with vermiculite, peat, and perlite in a volume ratio of 2:1:1 in sequence, and the seedling stage was managed according to conventional methods. The balanced nutrient solution is poured to provide corresponding nutrients, and the LED plant growth lamp is set on a support 20 cm high from the cucumber seedling canopy, and the height of the support can be adjusted. As the seedlings grow, adjust the height of the support flexibly and maintain the consistency of the luminous flux density.

[0018] When the cotyledons of the seedlings are unearthed, 4 red and blue LED plant growth lights are used for supplementary light, and the supplementary light time is 12 hours per day, and the supplementary light intensity is 90 μmol·m -2 ·s -1 . When the seedlings grow to 3 leaves and 1 heart, stop supplementing light.

Embodiment 2

[0020] Container seedlings were adopted, and cucumber seeds were sown in 72 or 50-hole hole trays after germination, and the seedling substrate was prepared with vermiculite, peat, and perlite in a volume ratio of 2:1:1 in sequence, and the seedling stage was managed according to conventional methods. The balanced nutrient solution is poured to provide corresponding nutrients, and the LED plant growth lamp is set on a support 20 cm high from the cucumber seedling canopy, and the height of the support can be adjusted. As the seedlings grow, adjust the height of the support flexibly and maintain the consistency of the luminous flux density.

[0021] When the cotyledons of the seedlings were unearthed, 8 red and blue LED plant growth lights were used to supplement the light, and the supplementary light time was 12 hours per day, and the supplementary light intensity was 180 μmol m -2 ·s -1 . When the seedlings grow to 3 leaves and 1 heart, stop supplementing light.

Embodiment 3

[0023] Container seedlings were adopted, and cucumber seeds were sown in 72 or 50-hole hole trays after germination, and the seedling substrate was prepared with vermiculite, peat, and perlite in a volume ratio of 2:1:1 in sequence, and the seedling stage was managed according to conventional methods. The balanced nutrient solution is poured to provide corresponding nutrients, and the LED plant growth lamp is set on a support 20 cm high from the cucumber seedling canopy, and the height of the support can be adjusted. As the seedlings grow, adjust the height of the support flexibly and maintain the consistency of the luminous flux density.

[0024] When the cotyledons of the seedlings were unearthed, 8 red and blue LED plant growth lights were used to supplement the light, and the supplementary light time was 8 hours per day, and the supplementary light intensity was 240 μmol m -2 ·s -1 . When the seedlings grow to 3 leaves and 1 heart, stop supplementing light.

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Abstract

The invention discloses a method for controlling excessive growth of cucumber seedlings by using a light-emitting diode (LED) light source and belongs to the field of plant cultivation. The method comprises the steps of: when the cotyledons of seedlings come out of soil, supplementing light through LED plant growth lamps, wherein the light supplementing time is 8-16 hours per day and the intensity of supplemented light is 90 to 240mu mol.m<-2>.s<-1>; and when three leaves and one core grow out of each seedling, stopping supplementing the light. The method for controlling the excessive growth of the cucumber seedlings by using the LED light source has the advantages that the defects of the traditional water-controlled seedling raising method and the method of using growth inhibitors to regulate the excessive growth of the seedlings are overcome, the effect of the red and blue LED light source capable of controlling the excessive growth of plants is remarkable, the method is safe and environmental-friendly, the service life of the LED lamps is long and the LED lamps are economic and affordable.

Description

technical field [0001] The invention relates to a plant cultivation method, in particular to a method for controlling excessive growth of cucumber seedlings by utilizing LED light sources. Background technique [0002] Cucumber is the main vegetable crop in protected cultivation in my country, and it is also an important vegetable worldwide. my country's melon vegetables mainly adopt seedling transplanting. In the process of growing seedlings in facilities, shading factors such as covering materials and dust in winter and spring will cause insufficient light in the facilities, especially in southern regions, if continuous rainy days are encountered, the insufficient light in greenhouses and greenhouses will be more serious. In the process of raising seedlings in summer, in order to reduce the temperature, sunshade nets are often used to cover them, which can also easily lead to weak light adversity. Cucumber is a light-loving crop, and long-term growth in low-light adversi...

Claims

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Application Information

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IPC IPC(8): A01G7/06A01G1/00
Inventor 吴震明村豪蒋芳玲徐志刚
Owner NANJING AGRICULTURAL UNIVERSITY
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