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Method for improving yield and quality of leafy vegetables in plant factory through low-dosage long-wave ultraviolet light

A UV light and low-dose technology, applied in botany equipment and methods, gardening methods, gardening tools/equipment, etc., can solve the problems of high UVB control requirements, no in-depth research on the impact of UVA on plants, and strong plant damage

Active Publication Date: 2019-09-20
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the discovery of the UVB receptor UVR8, more and more related studies have focused on the effect mechanism of UV-B on plant growth; among them, the improvement of plant quality by UV-B is a research hotspot, but due to UV- B is too destructive to plants and more harmful to the human body, so the requirements for UVB control are particularly high in actual production
Compared with UVB, there is no in-depth research on the impact of UVA on plants.

Method used

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  • Method for improving yield and quality of leafy vegetables in plant factory through low-dosage long-wave ultraviolet light
  • Method for improving yield and quality of leafy vegetables in plant factory through low-dosage long-wave ultraviolet light
  • Method for improving yield and quality of leafy vegetables in plant factory through low-dosage long-wave ultraviolet light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 The effect of different UVA light intensity on the yield and quality of leaf vegetables in plant factories

[0024] Experimental material: Purple leaf butter lettuce (Lactuca sativa L.cv. ‘Klee’), Rexwang Seedling Company, Netherlands

[0025] Environmental conditions: temperature 20-22℃, humidity 60-70%, CO 2 The concentration is 450ppm, Hoagland nutrient hydroponic cultivation (pH=5.8, EC=1.8dSm -1 ), the size of the cultivation trough is 130×70cm, the upper and lower three layers, the nutrient solution circulates automatically, and each layer has two-way fan ventilation. In order to avoid the mutual influence between the treatments, the different treatments are separated with reflectors.

[0026] Experimental treatment: Four treatments are set up in the experiment, the light environment parameter settings of each treatment are shown in Table 1, and the relative light quantum spectral distribution is shown in figure 1 . Light period light intensity processing such...

Embodiment 2

[0049] Example 2 The effect of different UVA illumination time periods on the yield and quality of leaf vegetables in plant factories. Experimental material: Purple leaf butter lettuce (Lactuca sativa L.cv.’Klee’), Rexwang Seedling Company, Netherlands

[0050] Environmental conditions: temperature 20-22℃, humidity 60-70%, CO 2 The concentration is 450ppm, Hoagland nutrient hydroponic cultivation (pH=5.8, EC=1.8dSm -1) , The size of the cultivation tank is 130×70cm, the upper and lower three layers, the nutrient solution circulates automatically, each layer is ventilated with two-way fans and the different treatments are separated by reflective plates.

[0051] Experimental treatment: The experimental choice of light intensity is 10μmol m -2 s -1 UVA for processing, the light parameter settings of each processing are shown in Table 4, and the relative light quantum spectral distribution is shown in Image 6 . The experiment set a total of four UVA illumination time periods for proce...

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Abstract

The invention relates to the field of cultivation in a plant factory, and particularly provides a method for improving the yield and quality of leafy vegetables in a plant factory through low-dosage long-wave ultraviolet light. In the cultivation process of the leafy vegetables in the plant factory, a conventional LED light source mainly with red and blue light wave bands is adopted; by means of the method, the low-dosage long-wave ultraviolet light is added on the basis of the conventional LED light source. Through the low-dosage long-wave ultraviolet light, the photosynthesis and growth of the leafy vegetables cannot be restrained, the yield of the leafy vegetables can be improved instead, the content of VC and anthocyanin in the leafy vegetables can be improved, and meanwhile the activity of an antioxidase system of the plants is greatly improved; through the method, by adding the low-dosage long-wave ultraviolet light, the yield and quality of the leafy vegetables in the plant factory can be greatly improved.

Description

Technical field [0001] The invention relates to the field of plant factory cultivation, and specifically relates to a method for improving the yield and quality of leafy vegetables in a plant factory using low-dose long-wave ultraviolet light. Background technique [0002] LED light source is considered to be the most suitable light source for plant cultivation in artificial light plant factories. The spectrum of most LED light sources for plant growth mainly focuses on the photosynthetic effective radiation spectrum range (PAR, 400-700nm). This band is generally considered to be the energy source for plant photosynthesis. However, light is also an important signal source for plant morphology and quality formation, such as ultraviolet light and far-red light. Ultraviolet light is an important component of sunlight. In recent years, with the increase in the ozone hole, the amount of ultraviolet light reaching the earth's surface has gradually increased. Most of the ultraviol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/04
CPCA01G7/04A01G7/045Y02P60/14
Inventor 李涛杨其长陈永成邹洁张雅婷张玉琪
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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