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Method for increasing useful component content of plant body in hydroponic culture

A hydroponics and production method technology, applied in botany equipment and methods, horticultural methods, cultivation, etc., can solve the problems of additional energy cost, cost increase, optimal light adjustment, maintenance and management, etc. cost effect

Inactive Publication Date: 2012-03-07
NIHON YAMAMURA GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to use additional equipment including a specific ultraviolet lamp in addition to normal lighting, so the cost increases, additional energy costs are consumed, and the adjustment, maintenance, and management of the optimum light amount are complicated

Method used

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  • Method for increasing useful component content of plant body in hydroponic culture
  • Method for increasing useful component content of plant body in hydroponic culture
  • Method for increasing useful component content of plant body in hydroponic culture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] [Example 1] Root ring exposure experiment in hydroponic culture of lettuce, pickled cabbage, spinach, Abutilon and Chinese cabbage

[0032] Carry out the hydroponic culture of lettuce, pickled cabbage, spinach, Artemisia spp. and Chinese cabbage. The cultivation conditions were a cycle of 14 hours in the light period and 10 hours in the dark period under a white fluorescent lamp, and an aqueous solution of fertilizer (Otsuka Residential Fertilizer Co., Ltd. (Otsuka Hesse fertilizer) SA formula) was used for the culture solution. The composition of the culture solution is shown in Table 1 below.

[0033] Table 1

[0034]

[0035] The seeds of the above plants were sown on urethane medium, and watered under the conditions of irradiation intensity 5000-5500 Lux, room temperature 18-20°C, culture solution concentration EC (conductivity) = 1.0mS / cm6 After 5 days of growth per day, the plants are fixed on the cultivation plate with the roots completely immersed in the culture solu...

Embodiment 2

[0048] [Example 2] Research on the relationship between the exposure length and the content of useful components in the exposure treatment of the root ring

[0049] In the exposure treatment of the root ring part, 10 groups with a gap of 0.5, 1, 2, 4, 5, 10, 15, 20, 25 or 30 cm between the cultivation plate and the liquid surface of the culture solution were set, so as not to be exposed to air The root length (exposure length) of the lettuce was cultivated and harvested in the same manner as in Example 1 except for these lengths. In addition, the group with an average root length of 30.9 cm and an exposure length of 30 cm at the beginning of the root ring part exposure treatment was in a state where only the root tip was immersed in the culture solution. For the harvested lettuce, the ascorbic acid content was measured in the same way as in Example 1.

[0050] The results are shown in Figure 4 . As shown in the figure, no change in ascorbic acid content relative to the control g...

Embodiment 3

[0051] [Example 3] Research on the relationship between the number of days of treatment and the content of useful components in the exposure treatment of the root ring

[0052] In order to study the relationship between the number of days of exposure treatment of the root zone and the content of useful components, lettuce seedlings were grown in the same way as in Example 1 above, and then 4cm was used as the exposure length, at 0, 3, 7, 9, 12 Or expose part of the root ring within 14 days, harvest the plant body, and determine the ascorbic acid content.

[0053] The results are shown in Figure 5 . In the rhizosphere exposure group, ascorbic acid increased to 111% in the rhizosphere exposure treatment for 3 days compared to the control group, and further increased by the 7th day treatment. However, after that, the rate of increase relative to the control group decreased. The result of the 12-day treatment was the same as that of the 3-day treatment, and the result of the 14-day t...

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Abstract

Disclosed is a method for producing a vegetable by hydroponic culture whereby the content of a useful component, for example, a nutrient component or a taste component, such as ascorbic acid, polyphenol or saccharide, can be increased without requiring any additional equipment including a special light source such as a UV lamp. This method for producing a vegetable in hydroponic culture is characterized in that the vegetable is grown in the state, where at least a part of the roots thereof are exposed to the air, over a definite period of time before harvesting.

Description

Technical field [0001] The present invention relates to a method for producing vegetables by hydroponics, and more specifically, to a method for producing vegetables by hydroponics in which the content of useful ingredients such as antioxidants, nutrients, and flavor components is increased while the content of nitrate nitrogen is reduced. Background technique [0002] Hydroponics, as a method of cultivating plants without using soil and using a culture solution containing minerals or other ions, has the following advantages: no farmland is required, as long as there is equipment, it can be completely managed under suitable conditions without restriction on site selection or natural environment Plants are cultivated in the state of growth conditions such as nutrition, light, water, and temperature. In addition, it can also make plants grow earlier, improve harvesting efficiency, and adjust the harvest period easily, so it is widely used in the production of vegetables and other a...

Claims

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Application Information

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IPC IPC(8): A01G31/00A01G7/00
CPCA01G7/00A01G7/06A01G29/00A01G31/00
Inventor 木村周二小山竜平森岡爱伊藤博通宇野雄一
Owner NIHON YAMAMURA GLASS CO LTD
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