JPH053730A - Method for cultivating japanese lacquer tree - Google Patents

Abstract

PURPOSE:To remarkably shorten the growth time of Japanese lacquer tree and increase the production by dipping a root of a nursery stock of the Japanese lacquer tree in a culture solution containing magnesium ions in an atmosphere at a constant temperature and humidity and shielding part of sunlight (for parts of leaves). CONSTITUTION:A root of a nursery stock of a Japanese lacquer tree is dipped in a culture solution containing magnesium ions in an atmosphere at 18-23 deg.C and >=65% humidity. Part of sunlight is then shielded for at least parts of leaves by preferably about 50% to cultivate the Japanese lacquer tree.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for cultivating lacquer.

[0002]

[Background Art] [Problems to be Solved by the Invention] Lacquer sap is used as a paint for lacquer ware, an electric insulation paint or an acid resistant paint, and its intermediate film has a high hardness and is excellent in water resistance, acid resistance and electric insulation. It is a thing. In particular, lacquerware paints have been the only paint that has been most respected since ancient times, and among them, Japanese lacquer is said to have the highest quality. However, since it is rarely produced and the price is high recently, it is no longer used in special cases or other than arts and crafts.

One of the causes of such a thing is that it takes a long time to grow. In other words, lacquer is planted in a mountain away from private houses because it causes a rash on the skin of the human body, but it takes about 10 years from the time when the sapling is planted to the time when it grows into a mature tree that can be sampled. Requires. For this reason, if the growth situation deteriorates due to insect damage, snow damage, etc., it is impossible to newly cultivate it to compensate for the growth, and the amount of collected liquid will decrease. Furthermore, since the number of craftsmen is decreasing due to the decline of lacquer crafts, the lacquer that is being cultivated is left untreated and this is also a major influence.

The present invention has been made under such circumstances, and an object thereof is to significantly reduce the time required for the growth of lacquer and to contribute to the increase in the production of lacquer. It is to provide a cultivation method that can be performed.

[0005]

[Means and Actions for Solving the Problems] In the present invention, the inside of a house is set to an atmosphere of a temperature of 18 to 32 ° C. and a humidity of 65% or more, and the roots of lacquer saplings are immersed in a culture solution containing magnesium ions in this house. Then, lacquer is cultivated by hydroponic cultivation.

Regarding the temperature in the house, for example, at night 1
Control at 8 to 20 ° C and 25 to 30 ° C in the daytime. This is because if the temperature is too high or too low, the growth may slow down and die. Further, the humidity needs to be 65% or more in order to prevent the tip of the leaf from dying so that the nutrients can be distributed to every corner of the leaf.

As the culture solution, one containing amino acid, zinc, boron, iron, magnesium and the like is used.

Here, it is important for lacquer to prevent leaves from dying, and therefore it is necessary to add magnesium in addition to controlling humidity. The reason why magnesium can suppress leaf withering is presumed to be that magnesium plays a role of strengthening veins. The content of magnesium ions is preferably about 0% to 1%, and it is desirable to spray a spray solution containing magnesium ions at dawn on the leaves to allow photosynthesis for a long period of time in a state containing magnesium. In this case, it is more effective to include iron ions in the culture solution and the spray solution.

Further, it is desirable to aerate the culture solution so that the seedlings are sufficiently saturated with air so that the seedlings can be sufficiently aired. When immersing the roots of the seedlings, it is desirable to immerse only the root tips in the culture solution in order to prevent root rot. Further, if the leaf portion is exposed to direct sunlight, the leaf burns and the growth is slowed down. Therefore, at least the leaf portion is shielded from the sunlight by about 50%.

[0010]

[Example] Using a lacquer sapling made in Aomori Prefecture, 1989
From May, 2012, 24 seedlings were cultivated by the method of the present invention, and the other 8 trees were cultivated by a method different from the present invention. The specific method and result will be described in detail. (1) Example Test method The aquarium is constantly aerated in the aquarium containing the culture solution with an air supply pipe to saturate the air, and the aquarium is housed in a house provided with a light shielding net so as to shield sunlight by about 50%. Each of the 24 seedlings described above was hydroponically cultivated by supporting each of the 24 seedlings so that only the tip of the root was immersed in the water tank. FIG. 1 is a view showing a state of such hydroponics, 1 is a lacquer seedling, 2 is a water tank, 3 is an air supply pipe, and 4 is a support base.

As the culture solution, an aqueous solution containing amino acid, zinc, iron, magnesium, boron, etc. is used.
The electric conductivity was set to 1.0 and the pH was set to 6.75 to 7.20. Magnesium is supplied as MgSO ₄ ,
The concentration in the culture solution of No. ₄ was 0. 0 for 3 months after the start of hydroponics.
Although it was set to 05%, the leaf color between the veins of the seedling became lighter,
Since there is a risk of dying in this state, the concentration of MgSO ₄ was set to 0.1%. At the same time as this treatment, Mg
A 0.1% solution of SO ₄ was sprayed on the leaf areas every day in the early morning.

The temperature inside the house was not controlled during the summer, but after October, the temperature was 25 to 30 ° C during the day.
It is set at 18-22 ° C at night and the humidity is always 65%.
The above is set.

Results As of the end of September 1989, the diameter (outer diameter) of the trunk of the seedlings 15 cm above the water surface was about 10 mm on average. In early October of the same year, about 60% of the saplings had large and swollen green leaves, and more than half of them had new leaves. Further, in April 1990 of the following year, the height was various, but it was about 60 to 80 cm. (2) Comparative Example The above-mentioned 5 seedlings were planted in a garden on the grounds of the applicant's Yokohama city, and left in a natural environment for the same period as the above example. When these seedlings were observed at the same time, as of the end of September 1989, the thickness (outer diameter) of the trunk corresponding to the measurement points of the example was about 5 mm on average, which was about half that of the example. It was Also, the height in April 1990 was 50-
The length was about 70 cm, the leaves were small, and they were almost dead, and there were almost no swamps.

The above-mentioned three seedlings are supported so that only the tip of the root is immersed in the water tank, and the leaves are covered with a light-shielding net, and the water tank is used as a garden in the grounds of the applicant's city of Yokohama. It was placed and left in a natural environment. The components of the culture solution and aeration are the same as in the example. When these seedlings were observed at the same time, the height was about the same as that of the example, but the thickness of the trunk was small, and the leaf size and swamp were far inferior to the example.

The reason why there is a difference between the example and the comparative example is that hydroponics has a very high absorption efficiency of nutrients and air, and that in the case of lacquer, the temperature and humidity are particularly high. It is presumed that it has a great influence on growth.

Furthermore, in the examples, the increase of the dose of magnesium activates the leaves of the seedlings, and the state of the leaves determines the growth of the lacquer seedlings. It is presumed that this is an important factor.

[0017]

EFFECTS OF THE INVENTION According to the present invention, since lacquer is cultivated in combination with hydroponics and control of temperature and humidity, and magnesium ions are supplied, as can be seen from the above-mentioned results, it is markedly superior to soil cultivation. It has a high growth rate and high leaf activity, which can contribute to an increase in the production of lacquer.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 Lacquer sapling 2 Water tank 3 Air supply pipe 4 Support

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Ishizawa 1-7 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Within Tsurumi Soda Co., Ltd. (72) Inventor Keisuke Kasahara 2-13-1, Botan, Koto-ku, Tokyo Mae Co., Ltd. Inside the Kawa Works

Claims (1)

Claims: 1. The roots of lacquer saplings are immersed in a culture solution containing magnesium ions in an atmosphere of a temperature of 18 to 32 ° C and a humidity of 65% or more, and sunlight is applied to at least leaf portions. A method for cultivating lacquer, which is characterized by shielding a part of the mosquito.