JPH06157228A - Hydroponics - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a hydroponic cultivation method effective for plant growth. [Composition] A hydroponic cultivation method in which a cultivation liquid contains lepizimoid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel hydroponic cultivation method, and more particularly to a hydroponic cultivation method characterized by using a cultivation liquid containing lepidimoid which is a plant growth promoting substance.

[0002]

2. Description of the Related Art Hydroponics, which is a method of growing plants with an aqueous solution containing nutrients, has been widely used as "hydroponics" in the old days. And, due to the recent development of plant biotechnology, it has become more and more popular. As the most important factor when performing this hydroponic cultivation method, there is a problem of what kind of composition the culture solution is used for.

Typical examples of such a culture solution include Sachs' solution and Knop's so.
solution) and Hoagland's solution. Therefore, there is a demand for the development of a hydroponic cultivation method using a new cultivation liquid for the purpose of establishing a more efficient hydroponic cultivation method.

[0004]

An object of the present invention is to establish a new hydroponic cultivation method, that is, a hydroponic cultivation method using a new cultivation liquid.

[0005]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventor has solved the above problems by including lepidimoid, which is an excellent plant growth promoting substance, in a culture solution. The present invention has been completed by discovering that it is possible. That is, the present invention provides a hydroponic cultivation method characterized in that a cultivation liquid contains lepidimoid.

The present invention will be described in detail below. Lepidimoid, which is an essential component of the culture solution in the hydroponics method of the present invention, is a physiologically active substance having a strong plant growth promoting effect, and for example, about 2 of gibberellin for the hypocotyl.
It has an extension-promoting effect about five times that of auxin. The physical properties and extraction method of such lepidimid are
It is described in Japanese Patent Application Nos. 4-131050 and 4-246813.

The content of lepizimoid in the culture solution is usually 1 to 10,000 ppm, more preferably 100 ppm or more. In addition, other active ingredients of the culture solution can be appropriately prepared according to the type of plant intended for cultivation. Then, a culture solution having the same composition as the culture solution normally used for hydroponics can be used. The plant to which the hydroponic cultivation method of the present invention can be applied is not particularly limited as long as it is originally a plant capable of hydroponics. Specifically, it can be applied to, for example, tomato, lettuce, pea, cabbage, etc., but is not limited thereto, as described above.

[0008] It is possible to carry out hydroponic cultivation of desired plants using the cultivation liquid thus prepared. The culture conditions other than the culture solution can be appropriately selected according to the type of plant intended for cultivation.

[0009]

The present invention will be described in more detail with reference to the following examples, but the technical scope of the present invention is not limited to these examples. [Reference Example 1] Extraction method of lepidimoid The method is described in "Method for extracting physiologically active substance of plant" (Head 4-
246813), a secretory solution was prepared from 2000 sunflower seeds using 2 liters of water. Further, the extract was concentrated under reduced pressure to prepare a concentrated extract having four stages of concentrations corresponding to 50 to 200 seeds, and a hydroponic culture experiment was conducted so that the final amount of the aqueous solution was 20 ml. [Example 1] Method of hydroponics Tomato, lettuce, pea, and cabbage are selected as test plants, and seeds thereof are sown, and the seeds are cultivated at 25 ° C for 12 hours in a dark place.
Germination and growth were carried out for 2 days (3 days for tomato only) in a 12-hour light cycle. Then, a glass hydroponic container
(Diameter 28 mm, height 40 mm, content volume 20 ml), hydroponics is carried out for 7 days, and the length of hypocotyl and epicotyl, root length, leaf size and weight are measured. I did. Hydroponics was carried out at a temperature of 25 ° C. in a light place for 12 hours and in a dark place for 12 hours. (1) Hydroponics of lettuce By the method described above, the control without adding the sunflower secretion containing lepidimoid and its concentration were changed to 4 levels (concentration equivalent to 50, 100, 150 and 200 sunflower seeds). A hydroponics experiment was conducted. After 7 days, the weight and length of the above-ground part and the below-ground part were measured, and the effect on the plant growth was verified.

The results are shown in Tables 1 and 2.

[0011]

[Table 1]

[0012]

[Table 2]

In FIG. 1, the left end shows the result of hydroponic culture for 3 days by adding the repidimoid corresponding to 50, 100, 150, 200 seeds of lettuce in the order of the control. According to this, from the third day, it can be seen that the growth of the above-ground part and the underground part has a great effect of promoting growth. In addition, from Table 1, lepidimid is an aerial part of lettuce in hydroponics.
It was confirmed that the elongation of (lower hypocotyl) had an average increase effect of 29% and the maximum increase of 41%, and the underground length had an average increase effect of 151%. It was also found that the larger the number of seeds used for extraction (higher concentration of lepidimoid), the greater the elongation rate. Also, from Table 2, the average increase in weight above the ground is 252% (approximately 2.5 times), and the maximum is 288% (approximately).
2.9 times). Furthermore, the weight increase in the underground part is on average
It was confirmed that 363% (about 3.6 times) and a maximum of 460% (about 4.6 times) had a remarkable weight increasing effect. And, it became clear that the higher the concentration of lepizimoid added together, the stronger the effect of increasing the weight of the above-ground part and the underground part. (2) Pea As in the case of lettuce, a hydroponic culture test was carried out by adding a sunflower secretion containing lepidimoid to a hydroponic culture solution at four levels, as in the case of lettuce, to promote growth for up to 7 days. The effect was examined.

The results are shown in Tables 3 and 4.

[0015]

[Table 3]

[0016]

[Table 4]

Shown in FIG. 2 is a photograph of a hydroponic culture after 3 days. Three samples on the right side to which lepidimoid was added as compared with the control at the left end (the concentration gradient of lepidimoid is the same as in FIG. 1 above). It can be seen that the growth of () is promoted. Also, from Table 3, when repidimoid (containing sunflower) secretion is added to hydroponic cultivation of peas, the above-ground portion averages about 1.5 times, up to 1.8 times, and underground portion averages about 1.3 times, compared to the control.
It became clear that the maximum elongation was about 1.5 times. In addition, it was revealed that the weight of the above-ground part was about 1.4 times and the maximum of 1.7 times, and that of the underground part was about 1.7 times and the maximum of 1.8 times. Especially, the higher the concentration of lepizimoid added,
It was revealed that the expansion rate and the weight increase were large regardless of the underground area. In addition, it was confirmed that the growth promoting effect was remarkably exhibited in all of the concentrations within the range of the repidimoid concentration of the example. (3) Tomato A hydroponic culture experiment was carried out by adding a sunflower secretory liquid containing lepidimoid to the hydroponic culture liquid at three concentrations according to the method described above, and the promotion effect (up to 7 days later) was examined.

The results are shown in Tables 5 and 6.

[0019]

[Table 5]

[0020]

[Table 6]

As shown in FIG. 3, even in the result of the cultivation on the 3rd day, it was found that the growth was remarkably promoted by the addition of lepizimoid as compared with the control at the left end (the concentration gradient is shown in FIGS. 1 and 2). Is the same as). From Tables 5 and 6, it became clear that the presence of lepizimoid has a great effect on the increase in the length and weight of the above-ground and underground parts of tomato. The length of the above-ground portion was up to about 2.2 times, and the length of the underground portion was up to 1.4 times. The weight of the above-ground part is about 3.1 at maximum.
It has been confirmed that there is a remarkable increase effect, with the underground part being up to about 3.3 times. On the other hand, when the concentration of lepizimoid increased, the effect of suppressing the length of the subterranean part (root) was also observed, while the effect of suppressing the weight was not observed. (4) Cabbage The hydroponic culture experiment was carried out by adding a sunflower secretory solution containing lepidimoid to the hydroponic culture solution in three levels by the method described above, and the effect of promoting growth up to 7 days was examined.

The results are shown in Tables 7 and 8.

[0023]

[Table 7]

[0024]

[Table 8]

According to Tables 7 and 8, lepizimoid is up to about 2.2 times as much as the growth of the above-ground part in the hydroponics of cabbage,
It was revealed that the growth of the underground part has a growth promoting effect of about 1.7 times. It was also confirmed that the maximum weight of the above-ground part is about twice and that of the underground part is about 1.2 times. To summarize the above, the hydroponics method with addition of lepidimoid (or sunflower germinated seed secretion containing lepidimoid) has a great effect on the elongation and weight increase of lettuce, pea, tomato and cabbage aboveground and underground. It was confirmed that there is.

As described above, it was shown that the application of lepizimoid to the hydroponic cultivation method has a great effect on promoting the growth of plants, and can shorten the cultivation period and improve the growth rate. Therefore, it is possible to greatly improve the growth of plants by the hydroponic cultivation method using this lepidimoid.

[0027]

INDUSTRIAL APPLICABILITY The present invention provides a new hydroponic cultivation method effective for plant growth.

[Brief description of drawings]

FIG. 1 is a morphological photograph of an organism showing the effect of lepidimoid administration on lettuce.

FIG. 2 is a morphological photograph of an organism showing the effect of lepidimoid administration on pea.

FIG. 3 is a morphological photograph of an organism showing the effect of lepidimoid administration on tomato.

Claims (2)

[Claims] 1. A hydroponic cultivation method, wherein the cultivation liquid contains lepizimoid. 2. The hydroponic cultivation method according to claim 1, wherein the content of repidimoid is 1 to 10,000 ppm.