Optical spectrum and ratio adapted to growth of young seedlings of European spruces

A technology for spruce and seedlings, applied in the field of spectrum and ratio of European spruce seedling growth, can solve the problems of significant differences in light intensity and light time response, no literature reports on LED lights in light incubators, inconsistent effects of spruce species, etc. , to ensure the survival rate of seedlings, reduce pesticides and control, and achieve the effects of uniform emergence.

Active Publication Date: 2018-11-16
INST OF FORESTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At home and abroad, European spruce and some types of spruce have been used to grow seedlings in containers and have achieved certain results, but there are still some problems: such as the light quality and ratio of LED lights that are relatively efficient, etc. A perfect system has not been formed, and different types of spruce species have inconsistent effects on light supplementation, and the color (spectrum), light intensity and light time response of spruce species and provenances to light are significantly different
[0006] So far, there is no literature report on the research on the supplementary light seedling cultivation of European spruce with LED lights in the light incubator. If the relevant technology can be developed, it will certainly have very broad prospects and huge economic benefits in the cultivation of European spruce. value

Method used

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  • Optical spectrum and ratio adapted to growth of young seedlings of European spruces
  • Optical spectrum and ratio adapted to growth of young seedlings of European spruces
  • Optical spectrum and ratio adapted to growth of young seedlings of European spruces

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Experimental program
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Effect test

Embodiment 1

[0067] Except the following conditions, the content of the present embodiment is the same as the specific technical solution in the above-mentioned specific embodiment: in the process of growing seedlings:

[0068] (1) Seedling-raising substrate: peat soil and perlite in a volume ratio of 5:1; the organic matter content in the seedling-raising substrate is 8.2 g / kg; the pH value of the seedling-raising substrate is 7.5.

[0069] (2) Start time of supplementary light: for annual container seedlings, start supplementary light after 80% of container seedlings emerge neatly; for biennial container seedlings, start supplementary light when 80% of container seedlings germinate.

[0070] Filling light time: For annual container seedlings, light filling will start on April 20, 2017, and will stop on August 20, 2017. The seedling height of container seedlings will be adjusted on the 20th, 50th and 120th day of light filling respectively. Measurement; for biennial container seedlings, a...

Embodiment 2

[0085] In this embodiment, the seedling substrate, light supplement start time and supplement light time, supplement light source red light and far red light two-color LED lights used in the process of growing seedlings of European spruce container seedlings are the same as those in Example 1, the difference is that , in terms of light intensity, 40 μmol·m -2 ·s -1 , 60μmol·m -2 ·s -1 , 100μmol·m -2 ·s -1 As the fill light intensity of this embodiment.

[0086] Seedling raising effect of this embodiment: Seedling height growth of annual European spruce container seedlings after light supplementation is shown in Table 3.

[0087] Table 3: Seedling height (cm) growth of annual European spruce container seedlings under different supplementary light treatments

[0088]

[0089] Note: In Table 3, the ratio of red light to far red light intensity is 7:1 in the red light and far red light dual-color LED lights.

[0090] As can be seen from Table 3, the light intensity used ...

Embodiment 3

[0092] In this embodiment, the seedling substrate used in the European spruce container seedling supplementary light seedling cultivation process, supplementary light start time, supplementary light source (red light LED light, red light, far red light two-color LED light, red light, blue light, far Red light tricolor LED lamp) with embodiment 1.

[0093] The fill light time is 120 days.

[0094] The light intensity used for supplementary light was 100 μmol m -2 ·s -1 .

[0095] In terms of supplementary light period, in addition to the 8:00-24:00 in Example 1, other supplementary light durations conventionally used in the prior art were used as controls.

[0096] The effect of raising seedlings in this embodiment: See Table 4 for the growth of seedling height after the annual European spruce container seedlings are supplemented with light.

[0097] Table 4. Seedling height (cm) growth of annual European spruce container seedlings under different supplementary light length...

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Abstract

The invention provides an optical spectrum and ratio adapted to the growth of young seedlings of European spruces and an application of a method to cultivation of European spruce container seedlings.The method comprises the steps: sowing European spruce seeds, and then, carrying out light compensation treatment on container seedlings, wherein a light source for light compensation treatment is selected from an LED lamp, a red light and far-red light double-color LED lamp and a red light, blue light and far-red light three-color LED lamp, the illumination intensity ratio of red light to far-redlight is 7:1, the illumination intensity ratio of red light to blue light to far-red light is 7:1:1, the illumination intensity of light compensation treatment is 80-100 mu mol.m<-2>.s<-1>, the lightcompensation time period is 8:00-24:00, and light compensation lasts for 100-120 days. By using the method, the problem of low growth speed at a seedling stage and a juvenile stage of an European spruce seedling raising process is firstly solved, meanwhile, the problem of season limitation in the light compensation seedling raising process of the European spruces is also solved, the continuous growth of the European spruces is promoted, the survival rate of the European spruces can be effectively guaranteed, and the method which is short in period and capable of saving energy and reducing emission is provided for supplying European spruce seedlings for afforestation on a large scale.

Description

technical field [0001] The invention relates to a seedling raising method for effectively promoting plant growth, in particular to a spectrum and a proportion suitable for the growth of European spruce seedlings that promote the growth of European spruce container seedlings. Background technique [0002] European spruce (Picea abies (L.) Karst) is also known as Norway spruce, Pinaceae, Picea. It has been introduced and cultivated in my country for more than 80 years. Compared with other native spruce species, this tree species is not only fast-growing but also has strong adaptability. The growth rate is significantly better than that of red bark spruce and Qinghai spruce. Timber species. However, slow growth at the seedling stage is the main problem in the production of spruce seedlings. Supplementary light seedling cultivation is an effective method to improve the efficiency of spruce seedling cultivation. Zhang Songzhi et al. studied the effects of light source and light ...

Claims

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Application Information

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IPC IPC(8): A01G7/04
CPCA01G7/045Y02P60/14
Inventor 王军辉欧阳芳群马建伟安三平祁生秀
Owner INST OF FORESTRY CHINESE ACAD OF FORESTRY
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