JP2020174634A - Tea plant cultivation method - Google Patents

Abstract

To provide a tea plant cultivation method, in which cultivation is performed without using pesticides or with reduced pesticides.SOLUTION: There is provided a tea plant cultivation method, including a branching process of cutting deeper than the picked surface of a first tea after picking a second tea, and a foliar spraying step A3 where a first spraying agent of water dilution of culture solution obtained by adding the fermented vegetable product containing enzymes and microorganisms into first mineral ion water using concentrated sulfuric acid together with brown sugar and co-cultivating it under air condition and second mineral ion water containing multiple minerals is splayed on the foliage at the time when the sprouted buds grow slightly after the branching step.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for cultivating tea plants.

In the cultivation of tea plants, after the second tea is plucked, the delayed buds are removed, the growth of the sprout of the next tea is aligned, and the second tea is cultivated from the plucked surface for the purpose of preventing old leaves and tree stems from being mixed during the plucking. In many cases, shallow cutting is carried out to cut to a depth of about 5 cm. The shallow cutting process and the working machine for performing the shallow cutting are described in, for example, Patent Document 1 and Patent Document 2. In addition, pesticides are sprayed after shallow cutting in order to suppress the occurrence of ring spot disease, anthrax, brown circle disease, etc. caused by filamentous fungi (mold).

Japanese Unexamined Patent Publication No. 2003-325019 Japanese Unexamined Patent Publication No. 2008-131857

However, if the same pesticide is sprayed for a long period of time, pest resistance to the medicinal effect of the pesticide appears. In addition, the amount of pesticides remaining in the tea plant increases, which adversely affects the human body and the surrounding environment, and also eliminates the natural enemies of beneficial insects and pests, resulting in a significant imbalance in the ecosystem. Furthermore, not only are safe and secure tea leaves required for domestic distribution, but in recent years, exports of tea leaves to other countries have increased, and further safety is desired.

In view of the above circumstances, an object of the present invention is to provide a method for cultivating tea plants that are cultivated without using pesticides or with reduced pesticides.

The method for cultivating a tea plant of the present invention that solves the above object is a pruning step of pruning deeper than the pruning surface of the first tea after picking the second tea.
Contains a culture solution in which a fermented vegetable product containing enzymes and microorganisms is co-cultured under aerobic conditions in primary mineral ion water using concentrated sulfuric acid or deep sea water together with brown sugar, and multiple minerals. It is characterized by having a first foliar spraying step of spraying a first spraying agent obtained by diluting the second mineral ionized water with water on the foliage at a time when the sprouted buds grow slightly after the branching step. To do.

Here, for example, in Shizuoka Prefecture, the picking of the second tea is carried out in the middle of June, and the time when the sprouted buds grow slightly after the pruning step is 7 after about 2 weeks have passed since the pruning step was carried out. It will be early June.

According to the method for cultivating tea plants of the present invention, by carrying out the pruning step, filamentous fungi (molds) that cause ring spot disease can be controlled, thereby suppressing the occurrence of ring spot disease. it can. In addition, various pests such as filamentous fungi that cause anthrax and brown circle disease can be repelled by the action of the microorganisms contained in the culture solution (various pests are prevented from approaching). In particular, since the first spraying agent contains the second mineral ionized water, the activity of the microorganisms becomes active by using the minerals contained in the second mineral ionized water as nutrients, and pesticides are not used. However, the occurrence of anthrax, brown circle disease, etc. after the branching step can be sufficiently suppressed. Further, the second mineral ionized water blended in the first spraying agent exerts a coating effect, and the effect of preventing the outflow of microorganisms due to rainfall or the like and repelling pests is maintained.

Here, in the pruning step, it is preferable to mow to a depth of 2 to 10 cm from the pruning surface of the first tea. If the cutting depth in the pruning step is less than 2 cm from the pruning surface of the first tea, there is a risk that the control of filamentous fungi that cause ring spot disease will be insufficient. On the other hand, if the cutting depth in the pruning step exceeds 10 cm from the pruning surface of the first tea, there is a risk of delay in growth.

Further, in the tea plant cultivation method of the present invention, a method having a second foliar spraying step of foliar spraying the first spraying agent from the end of July to the beginning of August may be used.

By carrying out the second foliar spraying step, various pests such as mulberry scale insects can be repelled, and the use of pesticides can be further reduced.

The time specified by the month in this specification and claims is based on the method of cultivating tea plants in Shizuoka Prefecture. Therefore, when the tea plant cultivation method of the present invention is carried out in production areas other than Shizuoka prefecture, such as Kagoshima prefecture, Mie prefecture, Miyazaki prefecture and Kyoto prefecture, the time of each region corresponding to the time of Shizuoka prefecture is appropriate. To do. For example, regarding the picking of the first tea, in Shizuoka prefecture, it is from mid-April to early May, but in Kagoshima prefecture, for example, it is from early April to late April.

Further, in the method for cultivating tea plants of the present invention, a method having a third foliar spraying step of foliar spraying the first spraying agent during the period from September to December may be used.

By carrying out the third foliar spraying step, various pests such as mulberry scale insects can be repelled, and the use of pesticides can be further reduced.

Further, in the method for cultivating tea plants of the present invention, it is preferable that the first spraying agent is obtained by further blending and diluting the fermented plant product.

The plant-derived fermented product referred to here is a fermented product in a state before being co-cultured under aerobic conditions in the first mineral ion water or deep sea water. By further blending the vegetable fermented product, the coating effect of the spraying agent becomes stronger, the outflow of microorganisms due to rainfall or the like can be further prevented, and the pest repellent effect can be extended.

Further, in the method for cultivating tea plants of the present invention, a method having a fourth foliar spraying step of foliar spraying the second spraying agent obtained by diluting the culture solution with water may be used in late May.

Mulberry scale insects parasitize the branches and trunks in the canopy, and the optimum control period is said to be 3 to 4 days from immediately after hatching to the settlement period, which is seen in late May. Since the second spraying agent does not contain the second mineral ionized water, it easily enters the canopy. Therefore, by carrying out the fourth foliar spraying step, it becomes possible to effectively repel larvae hatched on the branches and trunks in the canopy.

Further, in the method for cultivating tea plants of the present invention, as a method having a soil irrigation step in which the first spraying agent is irrigated with soil once in March and April, and at least once in the period from July to September. May be good.

By carrying out the soil irrigation step, the rise in soil temperature and the agglomeration of soil are promoted, and the soil environment can be adjusted. As a result, the vigor of the tea plant itself is increased and the damage of pests can be suppressed, and as a result, the use of chemicals can be suppressed. By carrying out the soil irrigation step in the middle of March and the beginning of April, the growth of the first tea can be promoted.

Further, in the method for cultivating tea plants of the present invention, a fifth foliar spraying step of foliar spraying the first spraying agent or the second spraying agent obtained by diluting the culture solution with water is performed from the middle of March to the beginning of April. It may be a method of having.

Here, the fifth foliar spraying step may be carried out when frost is likely to occur with reference to, for example, a late frost forecast. The fifth foliar spraying step may be carried out after the frost has fallen, but the fifth foliar spraying step should be carried out several days before (for example, one or two days before) the day when frost is expected. Is preferable.

By carrying out the fifth foliar spraying step, frost damage due to late frost can be effectively prevented.

According to the present invention, it is possible to provide a method for cultivating a tea plant cultivated without using pesticides or with reduced pesticides.

It is a process diagram which shows an example of the process in the tea plant cultivation method of this invention. It is a photograph which shows the state of the tea plant of Example 1. It is a photograph which shows the state of the tea plant of Example 2. It is a photograph which shows the state of the tea plant of the comparative example 1. It is a photograph which shows the state of the tea plant of the comparative example 2. It is a photograph which shows the state of the tea plant of Example 3. It is a photograph which shows the state of the tea plant of the comparative example 3.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The tea plant cultivation method of the present invention is characterized by a foliar spraying step and a soil irrigation step, and the characteristic points will be mainly described.

First, the first spraying agent will be described. The first spraying agent contains a culture solution in which a fermented vegetable product is co-cultured under aerobic conditions in first mineral ion water using concentrated sulfuric acid or deep sea water together with brown sugar, and a second containing a plurality of minerals. It is a mixture of mineral ionized water and water. The culture solution is not particularly limited, but for example, the plant / soil active solution described in JP-A-2005-306616, specifically, the trade name "Supermarket" commercially available from Sunroute Co., Ltd. "ER (registered trademark)" can be preferably used.

The plant fermented product used in the culture solution is a mixture of enzymes and microorganisms. The fermented plant product is not particularly limited, but for example, the trade name "Enzyme Nodo (registered trademark)" manufactured by Sunroute Co., Ltd. can be preferably used. Table 1 shows an example of the component analysis data of "Enzyme Nomichi".

As the enzyme, it is preferable to use an extract extracted from fruits and plants. Fruits and plants include grapes, pineapples, apples, pears, melons, strawberries, loquats, figs, bananas, garlic, kidachi aloe, carrots, cabbage, peaches, peaches, pine needle sprouts, corn, mountain strawberries, sawabiwa, mountains. Grape, papaya, akebi, matatabi, mountain peach and the like can be preferably used. Cereals such as adlay, barley, soybean, malt, rice, and cornstarch can also be used as a source of enzyme.

As the microorganism, wild yeast, lactic acid bacteria, Koji bacteria, Bacillus natto, Mizuho original species and the like can be preferably used. It is preferable to add VE, VC, selenium yeast and the like as coenzyme components, matcha, sucrose, vitamins, minerals and the like.

The brown sugar is preferably produced from sugar cane. Brown sugar contains nutrients for microorganisms by sugar decomposition and nutrients for microorganisms such as carbohydrates, dietary fiber, vegetable proteins, vitamins and minerals.

As the first mineral ionized water, it is preferable to use water in which a sufficient amount of minerals are ionized and dissolved in water by dissolving mica with concentrated sulfuric acid. For example, the mineral ionized water described in JP-A-2005-306616 is preferable, and the trade name "Cimalocks (registered trademark)" commercially available from Shimanishi Kaken Co., Ltd. can be exemplified. Further, the same effect has been confirmed when deep sea water is used instead of the first mineral ionized water. As the deep sea water, concentrated water may be used. As a culture solution using deep sea water instead of the first mineral ionized water, the product name "Super ER Gold" and the product name "Super ER Fuji no Shizuku", which are commercially available from Sunroute Co., Ltd., are used. It can be preferably used.

Table 2 shows the mixing ratio of the raw materials of the culture solution.

As an example of co-cultivation, first, boiling fresh water (without alkaline water) is placed in a non-metal container and cooled, and then "Cima Rocks" (first mineral ion water) or deep sea water is placed in the container. Next, brown sugar (100% sugar cane) is put into a non-metal container to dissolve it, and then left for a predetermined time. Also, put "Enzyme Nomichi" (vegetable fermented product) in another container and dissolve it in an appropriate amount of fresh water.

After the temperature inside the non-metal container has dropped to about 30 ° C., "Enzyme Nodo" is placed in the non-metal container and mixed, and the entrance of the non-metal container is covered with a covering cloth. After that, the mixture is stirred about once a day.

When the culture is continued, glucose and fructose are initially produced by sugar decomposition, and higher alcohol and amino acids are produced by alcoholic fermentation as the fermentation progresses. As the fermentation progresses further, acetic acid is produced by acetic acid fermentation. The completion period varies depending on the temperature of the culture solution, and is about 2 weeks when kept at about 25 ° C.

Specifically, the second mineral ionized water includes calcium, phosphorus, potassium, sodium, selenium, silicon, germanium, zinc manganese, iron, copper, cobalt, nickel, molybdenum, lithium, vanadium, titanium, aluminum, and rubidium. Use mineral ionized water, which is mainly used for agriculture and contains multiple minerals such as. As the second mineral ionized water, for example, the trade name "Amazing Yumesui (registered trademark)" commercially available from Sunroute Co., Ltd. can be preferably used.

The first spraying agent in the present invention is obtained by diluting these culture solutions and the second mineral ionized water with water. The dilution ratio is preferably about 700 to 1000 times for the culture solution and about 1400 to 2000 times for the second mineral ionized water. Further, the spraying agent may be a culture solution and the second mineral ionized water mixed with a fermented plant product (enzyme nodo) and diluted with water. The blending ratio of the fermented vegetable product (enzyme nodo) is preferably about 40 to 60 g with respect to 1000 liters of the spray agent. In the fifth foliar spraying step, the dilution ratio of the culture solution and the second mineral ionized water may be set higher.

The second spraying agent in the present invention is obtained by diluting the culture solution with water and does not contain the second mineral ionized water. The dilution ratio is preferably about 700 to 1000 times, which is the same as the spray agent.

FIG. 1 is a process diagram showing an example of a process in the tea plant cultivation method of the present invention. FIG. 1 also shows the general picking time of Ichibancha, Nibancha and Autumn / Winter Bancha in Shizuoka Prefecture.

First, the soil irrigation step B1 is carried out in the middle of March, and the soil irrigation step B2 is carried out in the beginning of April. In these soil irrigation steps B1 and soil irrigation step B2, for example, a riding type plucking machine is used to irrigate the soil between the furrows of tea plants by spraying about 450 to 500 liters of the first spraying agent per roll. By using a riding type plucking machine, it is possible to spray a plurality of rows (about 4 to 5 rows) at a time.

By carrying out the soil irrigation step B1 and the soil irrigation step B2, the rise in soil temperature and the agglomeration of soil are promoted, and the soil environment can be adjusted. As a result, the vigor of the tea plant itself rises, and the growth of the first tea can be promoted. In addition, the damage of pests can be suppressed, and as a result, the use of chemicals can be suppressed.

In early April, the foliar spraying step A1 in which the first spraying agent is foliarly sprayed is carried out. In this foliar spraying step A1, the first spraying agent is sprayed on the foliage in an amount of about 250 to 350 liters per roll using a gun nozzle. By carrying out the foliar spraying step A1, various pests can be repelled by the action of microorganisms contained in the culture solution. Further, since the gun nozzle has a large amount of spray and a large maximum flight distance, the working time and the work load can be significantly reduced by using the gun nozzle.

In late May, after the first tea is picked from mid-April to early May, the foliar spraying step A2 in which the second spraying agent is foliarly sprayed is carried out. In this foliar spraying step A2, the second spraying agent is sprayed on the foliage in an amount of about 300 to 500 liters per roll using a gun nozzle. This foliar spraying step A2 corresponds to an example of the fourth foliar spraying step in the present invention.

Here, the scale insects parasitize the branches and trunks in the canopy and are said to hatch in late May. Since the second spray agent does not contain the second mineral ionized water, it easily enters the canopy. Therefore, by carrying out the foliar spraying step A2, it becomes possible to effectively repel larvae hatched on the branches and trunks in the canopy. In the foliar spraying step A2, increasing the dilution ratio of the second spraying agent (for example, about 1000 times) and increasing the spraying amount (for example, about 500 liters per roll) makes it easier to enter the canopy, which is preferable. is there.

After the second tea is pruned in mid-June, the pruning process will be carried out. In this pruning step, the work of cutting deeper than the pruning surface of the first tea, preferably to a depth of about 2 to 10 cm from the pruning surface of the first tea is performed, whereby the occurrence of ring spot disease can be suppressed. In the pruning step, it is preferable to prun the tea leaves so that at least one tea leaf remains in order not to cause a delay in growth.

In early July, when the sprouted buds grow slightly after the pruning step (about 2 weeks after the pruning step), the foliar spraying step A3 in which the first spraying agent is foliarly sprayed is carried out. In this foliar spraying step A3, the first spraying agent is sprayed on the foliage so as to blow off pests in an amount of about 400 to 450 liters per roll using a gun nozzle. This foliar spraying step A3 corresponds to an example of the first foliar spraying step in the present invention.

By carrying out the foliar spraying step A3, various pests such as filamentous fungi and scale insects that cause anthrax and brown circle disease can be repelled by the action of microorganisms contained in the culture solution. In particular, since the first spraying agent contains the second mineral ionized water, the activity of microorganisms becomes active by using the second mineral ionized water as a nutrient, and even if no pesticide is used, anthrax after the branching process is performed. The outbreak of diseases and brown anthrax can be sufficiently suppressed. Further, the second mineral ionized water blended in the first spraying agent exerts a coating effect, and the effect of preventing the outflow of microorganisms due to rainfall or the like and repelling pests is maintained. The buds that sprout after the pruning process are the buds that will become the parents of the best tea in the next year, and by protecting these buds, the yield of the best tea in the next year can be increased.

Further, if the foliar spraying step A3 is performed when the buds sprouted after the pruning step are less than 2 cm, the foliar spraying step may be too early and the foliar spraying step may need to be performed again. On the other hand, if the foliar spraying step A3 is performed when the sprouted buds exceed 3 cm after the pruning step, the timing of spraying may be too late to sufficiently repel various pests such as filamentous fungi that cause anthrax. is there. Therefore, the foliar spraying step A3 is preferably carried out at a time when the sprouted buds grow to 2 to 3 cm after the pruning step.

Subsequently, the soil irrigation step B3 is carried out at least once during the period from July to September. In the soil irrigation step B3, for example, a riding type plucking machine is used to irrigate the soil between the furrows of the tea plant by spraying about 450 to 500 liters of the first spraying agent per roll. In the soil irrigation step B3, it is preferable to set the dilution ratio of the first spray agent to be high (for example, about 1000 times for the culture solution and about 2000 times for the second mineral ion water).

By carrying out the soil irrigation step B3, the soil environment is adjusted and the vigor of the tea plant itself is increased. As a result, the damage of pests can be suppressed.

Further, from the end of July to the beginning of August, the foliar spraying step A4 in which the first spraying agent is foliarly sprayed is carried out. In this foliar spraying step A4, the first spraying agent is sprayed on the foliage in an amount of about 250 to 400 liters per roll using a gun nozzle. This foliar spraying step A4 corresponds to an example of the second foliar spraying step in the present invention. By carrying out the foliar spraying step A4, various pests including mulberry scale insects can be repelled.

Subsequently, in early September, the foliar spraying step A5, in which the first spraying agent was sprayed on the foliage, was carried out, and in late October after the autumn-winter bancha was picked (late September to early October). Will carry out a foliar spraying step A6 in which the first spraying agent is foliarly sprayed, and in late November, a foliar spraying step A7 in which the first spraying agent is foliarly sprayed according to the outbreak state of pests. .. Although omitted in FIG. 1, if pests are still occurring during the period from December to March of the following year, the foliar spraying step of spraying the first spraying agent on the foliage is performed. It is good to carry out. These foliar spraying steps A5 to A7 correspond to an example of the third foliar spraying step in the present invention, and the first spraying agent is sprayed on the foliage in an amount of about 250 to 350 liters per roll. Since the influence of the wind will be stronger after September, it is advisable to use a general nozzle instead of the gun nozzle if there is a risk of scattering to nearby tea plantations. By carrying out the foliar spraying steps A5 to A7, it is possible to suppress the occurrence of anthrax, brown circle disease and the like, and repel various pests such as mulberry scale insects.

Further, it is desirable that the first spraying agent used in the foliar spraying steps A1, A3 to A7 is diluted by further blending a vegetable fermented product such as "Enzyme Nomichi". By blending the fermented vegetable product, the coating effect of the first spraying agent becomes stronger, the outflow of microorganisms due to rainfall or the like can be further prevented, and the repellent effect of pests can be extended.

Further, from the middle of March to the beginning of April, if frost is likely to occur with reference to the late frost forecast or the like, the foliar spraying step A0 in which the first spraying agent is foliarly sprayed may be carried out. This foliar spraying step A0 corresponds to an example of the fifth foliar spraying step in the present invention. Here, the freezing resistance of tea plants decreases when new shoots gradually start to grow in March, and the most frost damage (late frost damage) occurs a little after the sprouting period (mid-late March). Easy to receive. When the foliar spraying step A0 is carried out, frost damage due to late frost can be effectively prevented. It is presumed that the first spraying agent has an inhibitory activity against ice nuclei bacteria and can effectively inhibit ice nucleation. In addition, it was confirmed that the resilience of the shoots was improved even when the foliar spraying step A0 was carried out after the frost had fallen. That is, the foliar spraying step A0 is effective not only before the frost has fallen but also after the frost has fallen.

In the above explanation, only the pruning step after the second tea is picked is described, but the pruning is also carried out at an appropriate time such as after the first tea is picked or after the autumn / winter bancha is picked. In addition, fertilizer is applied as needed. In this fertilizer application, it is preferable to use an organic fertilizer or an organic compost, which is a preferable nutrient for the microorganisms contained in the first spraying agent. Depending on the outbreak state of pests, it may be necessary to control pests using pesticides. By appropriately carrying out the above-mentioned process for one year, the applicant has become able to cultivate tea plants without using pesticides in the next fiscal year.

According to the method for cultivating tea plants of the present invention, it is possible to provide a method for cultivating tea plants that are cultivated without using pesticides or with reduced pesticides.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, in the above-described embodiment, the foliar spraying step (third foliar spraying step) is carried out once a month during the period from September to November, but when no pests have occurred. May omit all or part of the foliar spraying step. On the other hand, depending on the outbreak state of pests, the foliar spraying step may be carried out twice or more a month. Further, in the above-described embodiment, "Cima Rocks" is mentioned as an example of the first mineral ionized water, but "Amazing Yumemizu" may be used as the first mineral ionized water. Further, in the foliar spraying step, a riding type sprayer or the like may be used. In the case of a table cutting garden where the table is cut after the first tea is picked, the second spraying agent is sprayed from the end of May to the beginning of June after the table cutting, and in the end of June, which is the time to germinate after the table cutting. The first spraying agent may be foliar sprayed.

Next, Test 1 and Test 2 of the present invention carried out in a tea plantation in Kikugawa City, Shizuoka Prefecture owned by the applicant will be described.

(Test 1) (Example 1) After pruning the second tea on June 15, 2018, a pruning step was carried out on July 20, 2018 to a depth of about 5 cm from the pruned surface of the first tea. The reason why the pruning process was slower than the whole year was that the growth of buds after picking the second tea was delayed, and the cause was that the temperature was very high and water shortage continued. Presumed. Then, on August 3, the same year, the foliar spraying step A3 in which the first spraying agent was foliarly sprayed was carried out. At this time, the sprouted buds had grown to about 2.5 cm. As the first spraying agent, 300 cc of "Super ER" and 200 cc of "Amazing Yumemizu" diluted with 300 liters of water should be used to blow off pests by about 400 to 450 liters per roll using a gun nozzle. It was sprayed on the foliage.

(Example 2) The foliar spraying step A3 was carried out in the same manner as in Example 1 except that 15 g of "Enzyme Nodo" was added to the first spraying agent of Example 1.

(Comparative Example 1) After performing the pruning step in the same manner as in Example 1, the foliar spraying step A3 was not carried out.

(Comparative Example 2) Instead of the first spraying agent of Example 1, 300 cc of "Super ER" diluted with 300 liters of water was used with a gun nozzle, and about 400 to 450 liters of pests per roll. Was sprayed on the foliage to blow away.

Then, on September 14, the same year, the state of the tea plant was observed. FIG. 2 is a photograph showing the state of the tea plant of Example 1, and FIG. 3 is a photograph showing the state of the tea plant of Example 2. FIG. 4 is a photograph showing the state of the tea plant of Comparative Example 1, and FIG. 5 is a photograph showing the state of the tea plant of Comparative Example 2.

As shown in FIG. 2, in Example 1, almost no damage due to pests was observed. It is presumed that this is because the microorganisms contained in the first spraying agent were able to repel various pests such as filamentous fungi that cause anthrax and brown circle disease. In particular, since the first spray agent contains "Amazing Yumesui" (second mineral ionized water), the minerals contained in the second mineral ionized water are used as nutrients to activate the activity of microorganisms and pesticides. It is considered that the occurrence of anthrax and brown circle disease after the branching process could be sufficiently suppressed even if it was not used. Furthermore, it is presumed that the second mineral ionized water blended in the first spraying agent exerted a coating effect, and the effect of preventing the outflow of microorganisms due to rainfall and the like and repelling pests was maintained.

Further, as shown in FIG. 3, in Example 2, no damage due to pests was observed as compared with Example 1. The reason for this is that since the first spraying agent of Example 2 contains "enzyme nodo" (vegetable fermented product), the coating effect of the spraying agent becomes even stronger, and the outflow of microorganisms due to rainfall or the like becomes stronger. It is presumed that it was possible to prevent the disease and prolong the repellent effect of pests.

On the other hand, as shown in FIG. 4, in Comparative Example 1 in which the foliar spraying step A3 was not carried out, it can be seen that the damage caused by the pests was severe and the leaves were ragged.

As shown in FIG. 5, it can be seen that damage caused by pests has occurred in Comparative Example 2, although not as much as in Comparative Example 1. It is presumed that the reason for this is that in Comparative Example 2, since the second mineral ionized water was not blended in the spraying agent, microorganisms flowed out due to rainfall or the like, and the effect of repelling pests was impaired.

(Test 2) (Example 3) Since it was announced in the late frost forecast that late frost due to low temperature may occur, the foliar spraying step A0 in which the first spraying agent was foliarly sprayed was carried out on March 30, 2019. did. As the first spraying agent, 1.5 liters of "Super ER" and 750 cc of "Amazing Yumemizu" were diluted with 1000 liters of water and sprayed on the foliage. In the foliar spraying step A0, the dilution ratios of "Super ER" and "Amazing Yumemizu" were set higher than those of other foliar spraying steps.

(Comparative Example 3) In Example 3, the foliar spraying step A0 carried out on March 30, 2019 was not carried out.

Then, on April 11, the same year, the state of the tea plant was observed. FIG. 6 is a photograph showing the state of the tea plant of Example 3, and FIG. 7 is a photograph showing the state of the tea plant of Comparative Example 3.

As shown in FIG. 6, in Example 3 in which the foliar spraying step A0 was carried out, it can be seen that the shoots are growing. On the other hand, as shown in FIG. 7, in Comparative Example 3 in which the foliar spraying step A0 was not carried out, sprout was slightly observed, but sprout development was hardly observed. As a factor, in Example 3, the first spraying agent had an inhibitory activity against ice nuclei bacteria and effectively inhibited ice nucleation, whereas in Comparative Example 3, due to frost damage (damage from late frost), It is presumed that the sprouted sprout has shrunk.

A0 foliar spraying process (fifth foliar spraying process)
A2 foliar spraying process (4th foliar spraying process)
A3 foliar spraying process (first foliar spraying process)
A4 foliar spraying process (second foliar spraying process)
A5, A6, A7 foliar spraying process (third foliar spraying process)
B1, B2, B3 Soil irrigation process

Claims (7)

After pruning the second tea, the pruning process of cutting deeper than the pruning surface of the first tea,
Contains a culture solution in which a fermented vegetable product containing enzymes and microorganisms is co-cultured under aerobic conditions in primary mineral ion water using concentrated sulfuric acid or deep sea water together with brown sugar, and multiple minerals. It is characterized by having a first foliar spraying step in which a first spraying agent obtained by diluting a second mineral ionized water with water is foliar sprayed at a time when sprouted buds grow slightly after the branching step. How to grow tea trees. The method for cultivating a tea plant according to claim 1, further comprising a second foliar spraying step of foliar spraying the first spraying agent from the end of July to the beginning of August. The method for cultivating a tea plant according to claim 1 or 2, further comprising a third foliar spraying step of spraying the first spraying agent on the foliage during the period from September to December. The method for cultivating a tea plant according to any one of claims 1 to 3, wherein the first spraying agent is obtained by further blending and diluting the vegetable fermented product. The tea plant according to any one of claims 1 to 4, wherein the second spraying agent obtained by diluting the culture solution with water has a fourth foliar spraying step of foliar spraying in late May. Cultivation method. Any of claims 1 to 5, wherein the first spraying agent has a soil irrigation step of irrigating the soil once in March and April, and at least once in the period from July to September. The method for cultivating tea plants according to item 1. Claims 1 to 6 include a fifth foliar spraying step of foliar spraying the first spraying agent or the second spraying agent obtained by diluting the culture solution with water from the middle of March to the beginning of April. The method for cultivating a tea plant according to any one of the above.