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Method for cultivating cucumber seedlings under LED intermittent lighting

A technology of LED lights and seedlings, which is applied in the field of cultivation of cucumber seedlings under LED intermittent light, can solve rare and other problems, and achieve the effect of outstanding advantages

Active Publication Date: 2019-01-04
深圳市霍迪科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

However, there are relatively few research reports on the use of intermittent light for vegetable seedling cultivation.

Method used

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  • Method for cultivating cucumber seedlings under LED intermittent lighting
  • Method for cultivating cucumber seedlings under LED intermittent lighting
  • Method for cultivating cucumber seedlings under LED intermittent lighting

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Experimental program
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Embodiment

[0028] 1. Materials

[0029] The experiment was carried out at the Horticultural College of South China Agricultural University from December 21, 2017 to January 16, 2018. The cucumber variety to be tested is "Yuexiu No. 3". LEDs with a red and blue ratio of 1:1 are used as the test light source. The wavelength of red light is 655-660nm; the wavelength of blue light is 455-460nm. 50-hole trays were used for experimental seedling cultivation. The macronutrient formula of the nutrient solution adopts 1 / 2 Hoagland's formula (pH ≈ 6.0), and the trace element is a general formula, which contains B: 0.5mg·L -1 , Mn: 0.5 mg·L -1 , Zn: 0.05mg·L -1 , Cu: 0.02mg L -1 , Mo: 0.01mg·L -1 . The steps are: step S1: after the cucumber seeds germinate, carry out seedling cultivation, and cultivate the seedlings until the cotyledons are completely flattened; step S2: place the seedlings in a place where the light intensity is 150 μmol·m -2 ·s -1 , the light period is 15s, the light duty...

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Abstract

The present invention discloses a method for cultivating cucumber seedlings under LED intermittent lighting. The method comprises the following steps: S1, carrying out culture of seedling after the germination of cucumber seeds, and cultivating seedlings until the cotyledons completely unfold; S2, placing the seedlings from the step S1 under LED lamps turned on during a time period of 6 : 00 to 24: 00 for intermittent lighting treatment 6-8 days with a lighting cycle period of 15s and a lighting duty ratio of 47%-67%; and S3, placing the seedlings from the intermittent lighting treatment in the step S2 under LED lamps turned on during a time period of 6 : 00 to 18: 00 for continuous lighting treatment 6-8 days to obtain one-leaf cucumber seedlings. According to the present invention, withLEDs as a light source, the cucumber seedlings from an LED intermittent lighting treatment with a duty ratio of 53% are overall superior in seedling strength index, osmotic adjustment substance content, antioxidant enzyme activity and actual photosynthetic efficiency to those from other treatments. Therefore, the use of 6-8 days red-blue LED intermittent lighting treatment and then 6-8 days normalLED supplementary lighting treatment can produce a seedling raising effect the same as or even better than that produced by continuous lighting, which can also save 10% of energy as a whole and is anoptimized mode of supplementary lighting for cucumber seedling raising.

Description

technical field [0001] The invention relates to a modern agricultural seedling raising technology, in particular to a cultivation method for cultivating cucumber seedlings under LED intermittent light. Background technique [0002] Compared with the dark reaction time of several seconds or even minutes, the light reaction can be completed within nanoseconds or milliseconds. When intermittent light is used, the photosynthetic reaction center absorbs and stores the light energy of the intermittent light less than 100 μs, and at intervals Utilize, in order to improve the utilization efficiency of light energy. [0003] Light is not only an important source of energy for plants, but also an important signal for morphogenesis, cell growth and development, and gene expression in the plant life cycle. Plants sense changes in light quality, light intensity, and photoperiod in the light environment through photoreceptors, and regulate plant photosynthetic activity and photomorphogen...

Claims

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Application Information

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IPC IPC(8): A01G31/00A01G7/04
CPCA01G7/045A01G31/00Y02P60/14
Inventor 宋世威何建文刘厚诚陈日远孙光闻苏蔚
Owner 深圳市霍迪科技有限公司
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