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Method for utilizing LED delayed supplementary lighting to promote rice seedling raising

A technology for supplementing light and rice, which is applied in the fields of rice cultivation, horticultural methods, botany equipment and methods, etc., can solve the requirements and response characteristics of plant light quality without consideration, can not well meet the needs of plant light, and has not been screened Issues such as the blue light band, to achieve the effect of improving root activity, increasing stem base diameter and strong seedling index, and increasing the activity of antioxidant enzymes

Active Publication Date: 2016-12-14
GUANGDONG IND TECHN COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional artificial light sources for plants are mostly incandescent lamps, fluorescent lamps, high-pressure sodium lamps, metal halide lamps, etc. There are very few products that try to develop light sources based on plant growth strategies and form industrialized designs, often with high luminous flux and low Low input cost, satisfactory visual effect, less consideration of plant light quality requirements and response characteristics, can not well meet the needs of plants for light
In the cultivation and seedling cultivation of rice, the strong seedling index of the seedlings can be improved after supplementary light treatment, and the effect of blue light and red-blue composite light is the best. It is not high, and the best blue light band has not been selected, so it is necessary to further study to find the best ratio of blue light supplementary light band and red-blue composite light

Method used

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  • Method for utilizing LED delayed supplementary lighting to promote rice seedling raising
  • Method for utilizing LED delayed supplementary lighting to promote rice seedling raising
  • Method for utilizing LED delayed supplementary lighting to promote rice seedling raising

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Experimental program
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Effect test

Embodiment 1

[0041] 1. References for the determination of rice morphological indicators and physical and chemical indicators:

[0042] (1) Cao Jiankang, Jiang Weibo, Zhao Yumei. Guidance for postharvest physiological and biochemical experiments of fruits and vegetables. China Light Industry Press, 2007;

[0043] (2) Li Hesheng. Principles and techniques of plant physiology and biochemistry experiments. Beijing: Higher Education Press, 2007;

[0044] (3) Zhang Zhiliang, Qu Weijing. Plant Physiology Experiment Guide. Higher Education Press, 2004.

[0045] 2 Experimental methods

[0046] 2.1 Rice seedling raising

[0047] Rice seeds (indica "Huanghuazhan" (Yueshendao 2005010), bred by the Rice Research Institute of Guangdong Academy of Agricultural Sciences) were sterilized, soaked in running water at normal temperature for 48 hours, and then germinated in a box at 30°C with constant temperature and humidity (humidity 100%) for 12 hours , when the germination reaches about 0.5cm, it is so...

Embodiment 2

[0106] 1 Experimental method

[0107] 1.1 Rice seedling raising

[0108] Rice seeds (indica rice "Huang Huazhan" (Guangdong Shendao 2005010), bred by Rice Research Institute of Guangdong Academy of Agricultural Sciences) were disinfected and sterilized, soaked in running water for 48 hours, and then germinated in a 30°C light, constant temperature and humidity (100% humidity) box for 12 hours. , when the buds reach about 0.5cm, sow them into the seedling trays (size 60×30×3.5cm) spread with paddy soil, about 400 grains per tray, and cultivate them in a greenhouse under natural light conditions during the day (natural light). The conditions are: day length>12h, temperature 20-25℃, relative humidity 60±5%, average light intensity about 300μmol.m -2 .s -1; Placed in the test light environment at night for 30d (day) growth cycle supplementary light treatment, that is, from the three-leaf stage, placed in the plant growth light environment containing blue LED lights at night for ...

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Abstract

The invention discloses a method for utilizing LED delayed supplementary lighting to promote rice seedling raising. The method comprises the following steps that firstly, a plant growth lamp is utilized to emit blue light for delayed supplementary lighting at a trefoil stage of rice growth; then, the plant growth lamp is utilized to emit compound red and blue light for delayed supplementary lighting at a five-leaf stage so as to promote rice seedling growth. By adopting a combined light supplementing mode, the seedling strengthening index is higher than that of exclusive use of supplementing of blue light or exclusive use of supplementing of cooperative red and blue light, the light supplementing time can be saved, and the method has the advantages of being low in energy consumption and high in efficiency.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a method for promoting rice seedling raising by using LED time-delay supplementary light. Background technique [0002] The growth of crops is a process of photomorphogenesis, and light quality plays an important role in the regulation of crop growth and development. Processes such as crop morphogenesis, photosynthesis, material metabolism, and gene expression are all affected by light quality. Plants can selectively absorb light quality in different bands. Plant photosynthesis is in the range of visible spectrum (380-760nm), and the absorbed light energy accounts for about 60%-65% of physiological radiation light energy. Plants are mainly sensitive to blue-violet light band 400 ~510nm, red-orange light band 610-720nm and far-red light band 720-780nm are sensitive, and mainly absorb blue-violet light band (430-450nm) and red-orange light band (640-660nm), but the suitable...

Claims

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Application Information

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IPC IPC(8): A01G7/04A01G16/00A01G22/22
CPCA01G7/045A01G22/22Y02P60/14
Inventor 曾佑炜高阳林李进进
Owner GUANGDONG IND TECHN COLLEGE
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