KR102612753B1 - Natural enemy insect protecting device - Google Patents

Abstract

From the perspective of IPM, an optimized reproductive environment is provided based on the habits of prey mites, which are alternative food for natural enemy insects, and long-term proliferation and maintenance of prey mites is realized, thereby increasing the habitability of natural enemy insects that prey on prey mites. It provides a protection device against natural enemy insects that has been improved over a long period of time.
It is a protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of their prey mites. It consists of a main body part in the shape of an envelope or case with an enclosed space inside, and an enclosed space in the main body part. , the bag body is provided with a receiving portion in which natural enemy insects and feeding mites can enter and exit, and the gap between the inner surface of the sealed space of the main body portion facing each other and the outer surface of the receiving portion is 3.0 mm or less. More suitably, the bag is sealed. The space is provided with a member made of a moisture-sustaining water retention material, the closed space allows natural enemy insects to enter the outside, water does not enter when sprayed on the main body, and the humidity is 70% or more for 30 days. A protection device against natural enemies insects that can be maintained as described above.

Description

Natural enemy insect protection device {NATURAL ENEMY INSECT PROTECTING DEVICE}

The present invention relates to a protection device for natural enemy insects. More specifically, although it is a simple device, it can provide an optimized reproduction environment based on the habits of the natural enemy insects that are the natural enemies of pests, and especially the feeding mites that serve as food for the natural enemy insects, thereby providing the food. It relates to a protection device for natural enemy insects that can maintain the proliferation of mites over a long period of time, improve the habitability of natural enemy insects, and enable more effective extermination of pests on plants.

Recently, IPM (Integrated Pest Management) focusing on natural enemies has been attracting attention. IPM, for example, is a management method that uses polyphagous mites such as Miyako mites, Swarski mites, and Cucumeris mites, which feed on leaf mites and thrips, which are pests to be controlled, as natural enemies. . On the other hand, it is known that natural enemy insects proliferate when so-called feeding mites, such as sugar mites or thin-legged meat mites, are used as substitute food when there are no or only a small number of the above-mentioned pests that are their original food. there is. These feeding mites are found as pests in preserved foods such as sugar, wheat flour, soybean meal, dried fruit, or bonito flakes, and can be multiplied in large quantities. For this reason, in theory, natural enemy insects can be reproduced in large quantities by using feeding mites. However, as mentioned above, feeding mites are organisms that are active in an environment containing sugar, wheat flour, etc., which is different from the environment on growing crops, where natural enemies insects normally feed, and where pests are active. Therefore, even if these feeding mites were applied together with natural enemy insects on crops for the purpose of pest control, the activity of natural enemy insects could not be sufficiently maintained.

In the above case, in order to maintain the population of natural enemy insects, a method of adding their feeding mites to crops has been considered, but this is complicated. In addition, in order to combine it with control using chemical pesticides, it is necessary to increase the additional frequency, which increases costs. To solve this problem, a method has been considered in which natural enemy insects and prey insects that serve as food for the natural enemy insects are placed together in one device and this device is installed in a crop cultivation field.

Specifically, for example, a natural enemy insect consisting of a container containing moisturizer, water, natural enemy insects, prey insects that serve as food for the natural enemy insects, a culture medium for cultivating fungi that serve as food for the prey insects, and an egg-laying substrate for the natural enemy insects. A multiplication device has been proposed (see Patent Document 1).

Japanese Patent Publication No. 2007-325541

However, according to the present inventors' examination, the device disclosed in Patent Document 1 has a complicated structure and is not easy to use in practical terms. Moreover, compared to being large-scale, it is necessarily necessary in terms of the reproductive environment (residence) of natural enemy insects. It wasn't something I could be fully satisfied with. As a result of a detailed examination of the cause, the present inventors obtained the following findings. Natural enemy insects also have this habit, but in particular, feeding mites that serve as food for natural enemy insects have a habit of liking narrow spaces, and the device disclosed in Patent Document 1 has no design in this regard, so it is difficult to kill the feeding mites. It was not suitable as a reproductive environment to continuously enable the proliferation of .

In addition, in the device disclosed in Patent Document 1, in order to maintain appropriate humidity, when drying continues, appropriate water is replenished from the top of the device or from the irrigation hole to maintain humidity. In addition, cotton-type pulp, sodium alginate, etc. are used as moisturizers, but when water is added to these moisturizers, water droplets eventually remain inside the device. In relation to this, in maintaining the growth of natural enemy insects, especially feeding mites that serve as food for natural enemy insects, the presence of water droplets in the reproductive environment must be avoided for the reasons described below. Second, in this regard, Patent Document 1 It was concluded that the device of the configuration disclosed in is not particularly suitable for maintaining the proliferation of feeding mites, and that further investigation is necessary to realize the habitability of natural enemy insects over a long period of time. That is, for example, powdery mites such as sugar mites, fine-legged meat mites, and powdery mites, which are food for natural enemy insects such as milt mites, like water and have a habit of gathering in that direction if there are water droplets. On the other hand, since these mites are extremely small, with a body length of 0.3 to 0.5 mm, they fall into water droplets and die, and it was found that feeding mites cannot be stably and reliably multiplied in an environment where water droplets exist.

In addition, in IPM (integrated pest management) using natural enemy insects, it is necessary to install a large number of natural enemy insect protection devices in large crop fields, so the devices used are not only inexpensive, but also impose a burden (labor) on workers. It is desirable to have a configuration that achieves savings in maximum force and reduced force. In this regard, if natural enemy insects can be continuously and stably released from the device over a longer period of time after installing the device, there is no need to frequently replace the device, and the labor of device replacement for the operator is reduced. , It is extremely useful as it can significantly reduce power. This point is extremely important for practical use, and conventional devices require further improvement.

The object of the present invention is to provide, in consideration of the above-described problems, a natural insect protection device that is an extremely simple device and is capable of effectively protecting natural enemy insects and the feeding mites that serve as food for natural enemy insects from changes in the environment. It's in the thing. More specifically, the purpose of the present invention is to provide an optimized reproductive environment based on the habits of feeding mites, which are alternative food for natural enemy insects, from the standpoint of IPM (Integrated Pest Management), and to improve their habitability. A protection device for natural enemy insects that can improve the long-term growth and maintenance of feeding mites and thereby improve the habitability of natural enemy insects that live in the device and prey on the feeding mites over a long period of time. It's in what it provides. In addition, the ultimate purpose of the present invention is to realize such an excellent protection device for natural enemy insects, and to exterminate pests caused by natural enemy insects, for which it is extremely difficult to develop and maintain a stable effect due to the use of living organisms. The goal is to provide a technology with high practical value that can be performed stably and further reduces the work load on people using the device.

The above object is achieved by the following present invention. That is, according to the present invention, a protection device for the following natural enemy insects is provided. Meanwhile, humidity as used in the present invention means relative humidity at 25°C.

[1] A protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for natural enemy insects, and is an envelope-shaped or case-shaped main body with an enclosed space inside. and an accommodating part disposed in the enclosed space of the main body, in which the natural enemy insects and the prey mites can be accommodated in an envelope, the inner surfaces of the enclosed space of the main body facing each other, and the accommodating part. A protection device for natural enemy insects, characterized in that the gap between the outer surfaces is 3.0 mm or less.

[2] A protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for the natural enemy insects, and is a bag-shaped or case-shaped main body with an enclosed space inside. and a receiving portion disposed in the sealed space of the main body portion, where the natural enemy insects and the feeding mites are accommodated in an envelope so that they can enter and exit, and a member made of a water-retaining material with sustained moisture retention. In addition, the closed space is configured so that the natural enemy insects can enter and exit from the outside, water does not enter when sprayed on the main body, and the humidity can be maintained at 70% or more for more than 30 days. A protection device for natural enemy insects, characterized in that it is configured to have a portion where the inner surface of the main body forming a closed space and the outer surface of the receiving portion face each other and the gap between them is 3.0 mm or less.

[3] It is a protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for the natural enemy insects, and has an enclosed space inside and an outside of the natural enemy insects. an envelope-shaped main body formed of a water retention material having a discharge port and exhibiting sustained moisture resistance to at least the internal sealed space, and disposed in the sealed space. , the envelope body is provided with a receiving portion in which the natural enemy insects and the feeding mites can enter and exit, and the enclosed space allows the natural enemy insects to enter and exit from the outside, and water does not enter when sprayed on the main body, and , the humidity of which can be maintained at 70% or more for 30 days or more, and the gap between the inner surface of the main body forming the sealed space and the outer surface of the accommodation portion facing each other is 3.0. A protection device for natural enemy insects, characterized in that it is configured to have a portion of less than ㎜.

[4] The protection device against natural enemy insects according to [2] or [3] above, wherein the enclosed space is configured to be maintained at 80% or more for more than 30 days.

[5] The protection device against natural insects according to [2] or [3] above, wherein the sustained-moisture retention material is made of a superabsorbent resin.

[6] The protection device against natural insects according to [2] above, wherein the receiving portion is accommodated in a bag made of a highly absorbent resin with sustained moisture properties, and is disposed in the closed space of the main body portion.

[7] The main body part has a natural enemy described in [1] or [2] above, which has a spinneret through which the natural enemy insect can enter and exit to the outside, at the bottom if it is envelope-shaped, or at the bottom if it is case-shaped. Protection device from insects.

[8] The receiving portion contains, within a tea bag-shaped bag, a combination of the natural enemy insects and the food mites, or, in addition to the natural enemy insects and the food mites, food necessary for the growth of the natural enemy insects and/or the food mites. A protection device for natural enemy insects according to any one of the above [1] to [7], which has a configuration that accommodates any one of the combinations of the above.

[9] In the case-shaped main body, the sealed space is formed by a sheet-shaped base material made of paper or plastic whose surface is water-repellent treated, and the sealed space has a front part and a space opposite to the front part. The [1] has a rear portion, a bottom portion, and a slit-shaped spinneret through which the natural enemy insects can enter and exit to the outside, and is sealed to prevent water droplets from entering the enclosed space from the outside other than the slit-shaped spinneret. ］ Or a protection device against natural enemy insects described in ［2］.

[10] The bottom surface portion is formed by being divided from the front portion and/or the rear portion by a folded portion obtained by bending at least one lower end of the base sheet constituting the front portion and/or the rear portion, The lower end of the base material sheet before being bent is in the shape of a first arc convex downward, and the shape of the folded portion is a second arc convex upward that is symmetrical with respect to the chord of the first arc shape. The protection device against natural enemy insects according to [9] above, wherein the slit-shaped spinneret is formed at least at a portion of the bent lower end in contact with the inner surface of the front part or the inner surface of the rear part.

[11] The above-mentioned natural enemy insects are milt mites, and the above-mentioned feeding mites are powdery mites such as sugar mites, fine-legged meat mites, and mealy mites. Protection of natural enemy insects according to any one of the above [1] to [10]. Device.

[12] The protection device against natural insects according to any one of [1] to [10] above, wherein a filling member for filling a gap formed therein is further disposed in the sealed space of the main body.

[13] The protection device against natural insects according to [12] above, wherein the filling member is at least one selected from the group consisting of felt, gap sheet, hemp root wrapping sheet, yarn, hemp yarn, embroidery cotton and cotton wool.

[14] Protection of natural enemy insects according to any one of the above [1] to [13], further comprising an installation part connected to the main body part for installation on the leaves of the crop to be protected from the pests that are the installation target. Device.

[15] The main body has a case shape that constitutes the sealed space and has at least a front part, a rear part opposing the front part, the bottom surface part, and the spinneret, and the front part and the rear part have their lower ends. Each of these is formed in a downwardly convex first circular arc shape, and the front portion is in continuous contact with both ends of the first circular arc shape, and has a second upwardly convex circular arc shape that is symmetrical to the first circular arc shape. It has a folded portion, and the bottom surface portion is bent inward until it reaches approximately 90 degrees while sliding the lower end of the front portion into contact with the inner surface of the rear portion, based on the second arc-shaped folded portion of the front portion. It is formed in an oval shape when viewed from the bottom, extending from the folded portion of the second arc shape to a sliding contact portion between the lower end of the front portion and the inner surface of the rear portion, and the spinneret is formed in the front portion. The protection device against natural insects according to [1] or [2] above, which is formed between the lower end and the inner surface of the rear part.

According to the present invention, there is provided a natural insect protection device that is an extremely simple device and can effectively protect natural enemy insects and mites that serve as food for the natural enemy insects from changes in the environment. More specifically, according to the present invention, from the standpoint of IPM (Integrated Pest Management), it is possible to provide an optimized reproductive environment based on the habits of feeding mites, which are alternative food for natural enemy insects, and further improve their habitability. A protection device for natural enemy insects with high practical value that can achieve long-term growth and maintenance of feeding mites and thereby improve the residence of natural enemy insects that live in the device and prey on feeding mites over a long period of time. provided. In addition, according to a preferred form of the present invention, an excellent protection device for natural insect enemies as described above is realized, and since living organisms are used, it is extremely difficult to develop and maintain the stable effect, and pests caused by natural enemy insects are extremely difficult to achieve. A technology with high economical practical value is provided, which can stably perform relief work and can further reduce the load on users during installation work, etc.

Figure 1 is a perspective view schematically showing an example of a protection device for natural enemy insects according to an embodiment of the present invention.
Figure 2 is a partially broken side view schematically showing the configuration of the receiving portion of the protection device for natural enemy insects shown in Figure 1. The inside of the circle in the figure is a schematic cross-sectional view taken along the line x-x'.
FIG. 3 is a plan view (expanded view) schematically showing the state before assembly of the protection device against natural enemy insects shown in FIG. 1.
Figure 4 is a partially broken side view schematically showing the configuration of the receiving portion of a protection device for natural enemy insects according to another embodiment of the present invention.
Figure 5 is a perspective view schematically showing a protection device for natural enemy insects according to another embodiment of the present invention.
Figure 6 is a partially broken side view schematically showing the configuration of the receiving portion of the protection device for natural enemy insects shown in Figure 5.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. Regarding the phenomenon in the above-described prior art, the present inventors have conducted a detailed study on the habits of feeding mites that serve as food for natural enemy insects, and have identified feeds that can reliably and stably multiply feeding mites over a longer period of time. A careful study was conducted under the understanding that if a simple and easy device that optimizes the reproductive environment for mites could be completed, it would be possible to continuously release natural enemy insects that feed on mites from the device over a long period of time. did.

The present inventors have already described a device for multiplying natural enemies of insects, which are natural enemies of pests, for agricultural or horticultural purposes, which are used to provide a feeding place, a place for laying eggs, and a nest for adult insects for the growth of natural enemy insects for extermination of pests. A natural insect protection device with a simple and easy structure in the form of a case made of paper or plastic sheet base that accommodates natural enemy insects inside is proposed (Japanese Patent Publication No. 5681334). In this embodiment, feeding mites are accommodated in the envelope body, which is a storage unit for natural enemy insects, together with rice bran, wheat bran, etc. as food necessary for the proliferation of natural enemy insects. The present inventors have confirmed that the device proposed above can continuously release natural enemy insects and exterminate pests more simply and effectively than the conventional device. However, the present invention, which increases the practical value described above, In order to achieve the goal, it was recognized that it was necessary to establish a technology that could utilize feeding mites more actively and reliably.

In light of the above recognition, the present inventors conducted intensive studies so that the present inventors could develop a more effective protection device against natural enemy insects than the devices already proposed. In the process, the internal shape of the case made of paper or plastic sheet base material was changed in various ways, and careful consideration was made to find the optimal reproductive environment not only for natural enemy insects but also for the mites that serve as their food. It was done. As a result, it was found that mealy mites, which are food for natural enemy insects, have a habit of particularly liking narrow spaces. Therefore, the present inventors, when arranging a container in which natural enemy insects and feeding mites can enter and exit the envelope, in a closed space formed inside the case-shaped main body, the inner surface of the main body forming the closed space As a result of examining that the gap between the outer surfaces of the above-mentioned housing portion faces each other was narrowed, it was found that by making it narrow, the proliferation of feeding mites is particularly maintained well, and as a result, natural enemy pests are also kept within the enclosed space. It was discovered that it was possible to reproduce continuously over a longer period of time.

In addition, if there is a slight gap in the shape of a slit, natural enemy insects can easily enter and exit from the enclosed space and prey on pests on the growing crop, resulting in confirmation that IPM is continuously performed in good condition. did. More specifically, the above-mentioned narrow space is a narrow space of at least 3.0 mm or less, preferably 2.0 mm or less, and no more than 1.0 mm, so that the mealy mites that feed on it can be considered to feel the walls around them. It was found that it was desirable to exist in this reproductive environment. For this reason, in a state in which an accommodating part in which natural enemy insects and feeding mites can enter and exit is disposed inside the case-shaped main body, if a gap of more than 3.0 mm is formed inside the enclosed space, a space to fill the gap is provided. It is desirable to have a configuration in which more charging members are arranged. In this way, more areas with a gap of 3.0 mm or less can be provided in the reproductive area of natural enemy insects and feeding mites, and thus the proliferation of feeding mites is maintained more favorably. As a result, the habitability of natural enemy insects can be further improved. Details on this point will be described later.

The present inventors believed that, in addition to the physical reproductive environment described above, temperature and humidity were also important factors, and thus conducted a detailed study on these points. It is known that in order to maintain a good reproductive environment for natural enemy insects, lichen mites, it is necessary to maintain appropriate humidity. For example, in the above patent document 1, it is said that it is desirable to maintain the humidity in the breeding area of natural enemy insects at 55% or more by moistening the water with a moisturizing agent and maintaining a moisturized state at all times. In contrast, according to the examples in Patent Document 1, although it depends on the type of moisturizer used, even if sodium alginate, which has better humidity retention properties, is used, the humidity after 1 day is 99%RH, whereas the humidity after 7 days is 99%RH. 72%RH, dropping to 51% on the 14th day. Regarding this, in the technology of Patent Document 1, as a countermeasure, it is stated that water is poured with a moisturizing agent in the growth device at intervals of about one week.

However, according to the present inventors' examination, as previously described, when feeding mites such as powdery mites, which serve as food for natural enemy insects, are present in the device environment described in Patent Document 1, they have a water-loving habit, so water injection They collect in water droplets and die by drowning in the water, and it has been discovered that it is particularly difficult to maintain stable growth of feeding mites. In addition, the above-mentioned technology forces the user to inject water with a moisturizer in the proliferation device at intervals of about one week, which also poses a problem in terms of practical application. In addition, as a result of further examination, powdered mites such as sugar mites, fine-legged meat mites, and powdery mites, which are food for natural enemy insects, have higher humidity than natural enemy insects, specifically, humidity of 70% or more. It was found that a high-humidity environment, preferably 80% or more, is particularly suitable as a reproductive environment.

In response to the above-mentioned various findings, the present inventors first proposed a natural enemy insect protection device of a simple and easy structure in the form of a case made of paper or plastic sheet base material, which accommodates natural enemy insects therein. (hereinafter referred to as the conventional device) was examined in more detail. As a result, the conventional device is structured to have a relatively narrow space, but because this point is not strongly conscious, it cannot be said to be an optimal reproductive space, especially for feeding mites. Regarding this, it was found that, basically, by using a configuration as shown in Fig. 1, which will be described later, a narrow space preferred by feeding mites can be reliably formed near the feeding area of the feeding mites. Specifically, the gap between the inner surface of the main body forming the closed space and the outer surface of the housing part where natural enemy insects and feeding mites can enter and exit the bag face each other, is 3.0 mm or less. Preferably, having a portion of 2.0 mm or less is extremely effective in maintaining the growth of feeding mites. In addition, as previously described, for the purpose of providing more parts with a gap of 3.0 mm or less, it is desirable to arrange a filling member to fill the gap of more than 3.0 mm formed inside the closed space of the main body.

Additionally, the present inventors first measured the humidity within the conventional device proposed by the present inventors and confirmed that the humidity within the device was stably maintained at at least 50% or higher for at least one and a half months. On the other hand, in the conventional device, although the degree varies depending on the form, the intrusion of water into the device is not taken into consideration, so it is assumed that water is always applied to the plants, and water is sprayed strongly or from multiple directions toward the conventional device. It was found that when water was sprayed, the intrusion of water into the device was unavoidable. From this, it was recognized that it is important not only to keep the environment inside the device in a state where humidity is stably maintained at a higher level than that of conventional devices, but also to create a device that does not allow water to enter even when sprayed.

Therefore, in the case of water spraying or rain, it is necessary to have a discharge outlet narrow enough to prevent water from entering the device and at least allow natural enemy insects to enter and exit the device. It is necessary to keep the closed space sealed to prevent water droplets from entering from the outside as much as possible. In addition to the above configuration, the enclosed space where natural enemy insects and their prey mites live is configured so that the humidity can be maintained at 70% or higher, preferably 80% or higher, and further at 85% or higher for at least 30 days. If possible, natural enemy insects can be released stably over a long period of time, making it a protection device for natural enemy insects with extremely high practical value. As a result of careful study of this point, the present inventors have found that, as much as possible, by placing a moisture-sustaining maintenance material in the closed space of the main body portion of the sealed structure, the humidity in the closed space is reduced to the above-mentioned high humidity. Also, I found something that could be maintained for more than 30 days.

As a water-retaining material with sustained moisture resistance, a superabsorbent resin developed for horticultural use is suitably used. This superabsorbent polymer can be used in a convenient way for the user, for example, by inserting it into the closed space of the main body while containing water. Although this method is simple to use, it is possible to maintain the humidity in the enclosed space where feeding mites live in the appropriate state described above. Using such a superabsorbent polymer is one of the preferred forms of the present invention.

In addition, in the present invention, in addition to the above-mentioned superabsorbent resins, those in the form of a moisture-permeable membrane that allows only water vapor to pass through without allowing water to pass through, and which encapsulate water or moisture, can be effectively used. The moisture referred to here refers to, for example, something that contains water in an absorbent resin or the like, and is configured to release water vapor through a moisture-permeable membrane. As a material exhibiting water absorption properties used at this time, a general-purpose water absorbent resin or a superabsorbent resin developed for horticultural purposes mentioned above can be used. In addition to these, for example, natural derivatives such as agar, mannan, agar, gelatin, and pectin, as well as gelling agents and thickeners made from these natural derivatives, etc. can also be used. In other words, it is also possible to use the water-impregnated material encapsulated in the moisture-permeable membrane as a moisture-sustaining water retention material by placing it in the sealed space of the main body. The above-mentioned superabsorbent resin and moisture-permeable membrane developed for horticulture are moisture-proof in a vapor state after encapsulating water or moisture, and even if water-loving feeding mites gather, feeding mites will not walk on the surface. It is possible, and you will never drown. The use of such water-retaining materials is one of the important factors in providing a reproductive environment that allows continuous growth of feeding mites.

Representative examples of superabsorbent resins useful as water-retaining materials with sustained moisture retention include those made of crosslinked polyacrylates, which are also sold under names such as Crystal Soil, and such products can be used in the present invention. Specifically, commercially available products, such as Aqua Pearl (brand name) and Sanwet (brand name) manufactured by Sanyo Kasei, and Jewel Polymer sold by Daiso Sangyo Co., Ltd. (Product name) etc. can be used. These superabsorbent resins expand more than 100 times by adding water, can retain a lot of water inside, and exhibit sustained moisture retention properties. In the present invention, when using a ball made of a superabsorbent polymer, it is important to add water and expand it before removing the water. The reason is that, as described above, if water droplets exist in an enclosed space, feeding mites gather toward the water droplets and fall into the water droplets, making it impossible to maintain stable growth. The ball made of superabsorbent polymer can be expanded by adding water and inserted into the sealed space of the main body as is. In addition, when using a plurality of balls made of superabsorbent polymer that have been expanded by adding water, it is also possible to insert them into the closed space of the main body in the form of encapsulating them in a moisture-permeable bag or the like.

As described above, in the present invention, the humidity in the sealed space of the main body is required to be maintained at, for example, 70% or more for 30 days. For this purpose, it is important that the maintenance material disposed in the sealed space of the main body part continuously releases water vapor appropriately. Materials for superabsorbent resins (polymer compounds) useful as repair materials that exhibit such functions include those described above. Among them, it is more preferable to use a temperature-responsive polymer compound that exhibits the functionality of controlling the release of water vapor depending on the ambient temperature. Specifically, for example, a polymer compound that exhibits the functionality of releasing water vapor at a temperature around or above room temperature and stopping the release of water vapor or absorbing moisture at a temperature below room temperature, especially at a temperature where condensation is concerned, is suitably used. Available. These polymer compounds can be used on the market, and are appropriately selected according to the conditions of the crops or cultivation facilities to which the natural enemy insect protection device of the present invention is applied, referring to the moisture resistance and moisture absorption temperature set for each product. It is desirable to use At this time, it is also preferable to use multiple types of polymer compounds together.

As previously described, a moisture-permeable membrane that does not let water flow, but only water vapor, is used to seal water or moisture in the form of a water-retaining material, and water vapor generated from the water-retaining material is sealed through the moisture-permeable membrane. A form configured to be introduced into a space and maintain the humidity in the closed space of the sealed main body portion at a desired high humidity is also a preferred embodiment of the protection device for natural enemy insects of the present invention. In this case, the water retention material used is not limited to the superabsorbent resin exhibiting sustained moisture retention as described above, and various materials exhibiting water retention properties as exemplified above can be appropriately selected and used. In addition, in the case of the above configuration, the humidity in the sealed space of the main body can be adjusted to a desired state by, for example, appropriately adjusting the area and thickness of the moisture-permeable membrane and the membrane material.

If an envelope-shaped repair material in which water or moisture is sealed with a moisture-permeable membrane is made into a thin shape, for example, about 0.5 to 10.0 mm thick, it is also possible to use it while attached to the inside of the main body. In that case, the work of inserting the maintenance material into the device, which occurs when installing the protection device against natural enemy insects of the present invention in a crop field, can be omitted, which is useful in practical terms, such as improving work efficiency during installation. . For example, the water or moisture-encapsulated bag-shaped repair material can be used with a length of about 20 to 100 mm and a width of about 20 to 100 mm. Here, when using the bag-shaped repair material attached to the inside of the main body, in order to avoid the release of water vapor before installing the natural enemy insect protection device of the present invention on the crop cultivation field, the bag portion made of a moisture-permeable membrane is used. It is effective to cover it with a moisture-proof sheet, etc. In this way, by peeling off the moisture-proof sheet at the time of installation, it becomes possible to efficiently control the humidity in the enclosed space within the protection device without loss. On the other hand, the use of the repair material in this way by attaching it to the inside of the main body and covering it with a moisture-proof sheet or the like can be used without being limited to the above-described form. For example, rather than enclosing the absorbed superabsorbent resin in a moisture-permeable membrane, it may be used in a state where it is directly attached to the inside of the main body and covered with a moisture-proof sheet or the like. As the moisture-permeable membrane used above that lets only water vapor pass without letting water flow, for example, a microporous polyolefin-based film is preferable, and specifically, a moisture-permeable film made of Mitsubishi resin, KFT (brand name), etc. can be used. You can.

When the protection device against natural insects of the present invention is installed and used in facilities such as greenhouses and greenhouses, humidity control is usually not performed in these facilities in most cases. Therefore, in the protection device for natural enemy insects of the present invention, maintaining the humidity in the enclosed space of the main body within a desired range is extremely useful for stable release of natural enemy insects. According to the device for protecting natural enemy insects of the present invention, the humidity in the enclosed space can be maintained at 70% or higher, preferably 80% or higher, and more preferably 85% or higher for at least 30 days. The specific means vary depending on the size of the main body, the materials used there, etc., and cannot be uniformly defined. For example, this can be achieved by placing the repair material in a closed space so that the weight of the water or moisture-containing material is usually 0.8 to 20 g, preferably 4 to 10 g.

With reference to the drawings, the configuration of a protection device for natural enemy insects according to an example embodiment of the present invention will be described. As shown in FIGS. 1 to 4, the natural insect protection device 10 of the present invention has the following structural features, and is capable of maintaining the growth of mites that serve as food for the natural enemies of the pests. This can improve the habitability of natural enemy insects. That is, the protection device for natural enemy insects of the present invention includes a main body portion 11 in the shape of an envelope or case body with an enclosed space inside, and a natural enemy insect and It is provided with a container 12 in which feeding mites can enter and exit, and the space between the inner surface of the closed space of the main body 11 and the outer surface of the container 12 facing each other is 3.0 mm or less. It is characterized by being configured to have. In addition, as shown in FIG. 4, the protection device for natural enemy insects of the present invention has a more remarkable effect by further arranging a member 15 made of a moisture-sustaining water retention material in the closed space of the main body 11. It is meant to represent . Hereinafter, each component will be described in detail.

(Main body (11))

The main body portion 11 constituting the protection device for natural enemy insects of the present invention has an envelope shape or case shape with space, and the case shape includes, for example, a cylindrical shape (one with an elliptical bottom and a track shape). Included), and those having a prismatic shape (including those where the bottom surface is a triangular, square or more polygonal shape), etc. Meanwhile, the size of the bottom surface, in terms of rectangle, is preferably about 10 to 50 x 30 to 100 mm, for example. Additionally, it is desirable that the length of the main body be approximately 80 to 300 mm and the width to be approximately 70 to 200 mm. In addition, the main body portion 11, which has a sealed space inside, is a case body having a space by punching out a sheet-shaped base material made of paper or plastic into a strip shape, as shown in FIGS. 1 to 4. It can be easily formed by assembling it into a shape. On the other hand, there are no particular restrictions on the punching method or assembly method. The main body portion 11 can also be formed in the shape of an envelope (not shown) by using a paper or plastic envelope tailored to the size of the receiving portion 12.

In this way, by making the shape of the main body 11 into an envelope shape or case shape with space, the reproductive environment of the accommodating part 12 accommodated in the main body 11, which will be described later, can be improved. In other words, since it is possible to form a closed space by sealing from the top of the body to the side, it is possible to prevent water droplets from entering from the outside, maintain appropriate humidity, block rays such as sunlight, and It is possible to prevent high temperatures caused by heat rays, provide a hiding place (shelter) for the spraying of chemical pesticides and other substances that have a strong effect on natural enemies lily mites, and prevent insectivorous diseases such as voles and slugs. This effect is synergistically increased by combining it with the spacing relationship formed by the outer surface of the receiving portion 12 and the inner surface of the main body portion 11, which will be described later.

The base material constituting the main body 11 is preferably made of a material that has elasticity and flexibility, has waterproofness and weather resistance because it is often exposed to rain and dew, and can be disposed of as general waste (main body The same applies to the installation part 13 described later, which is connected to the part). For example, it is preferable that the paper is made of synthetic paper or paper whose surface is treated to repel water because the environmental load upon disposal is small. Specifically, milk carton paper, coated paper, double-sided PE (polyethylene) film laminated paper, etc. can be mentioned. Additionally, at least one type of synthetic resin selected from the group consisting of polyester, polyethylene, polystyrene, and polyurethane, metal foil, or non-woven fabric may be used. Additionally, it is generally desirable to have a thickness of 0.01 to 2.0 mm, preferably 0.1 to 0.5 mm.

As shown in FIG. 1, the main body portion 11 preferably has a spinneret (gap) through which natural enemy insects can escape from the space to the outside for the sake of the activity of natural enemy insects after their proliferation. On the other hand, it is preferable that the gap is a small gap that allows natural enemy insects to pass through. Also, considering the risk of water entering the interior due to water spraying, etc., a slit-shaped gap located near the bottom of the main body should be used. It is more desirable.

Specifically, the main body portion 11 has at least a front portion (A), a rear portion (B) opposite the front portion (A), a bottom portion (C), and a spinneret (D) constituting a closed space. It is preferable that it has a case shape. For example, as shown in FIG. 1, the main body portion 11 has a case shape, and a sealed space is formed with a sheet-shaped base material made of paper or plastic whose surface is water-repellent treated, and the sealed space is It has a front part (A), a rear part (B) opposite the front part (A), a bottom surface part (C), and a slit-shaped spinneret (D) through which natural enemy insects can enter and exit to the outside. Other than the slit-shaped spinneret, it is preferable that the closed space is sealed to prevent water droplets from entering from the outside.

More specifically, the main body portion 11 having the configuration shown in FIG. 1 can be easily formed by assembling the developed diagram shown in FIG. 3 as follows. That is, the bottom surface portion C is formed bordering the front portion A by a folded portion obtained by bending at least one lower end of the base sheet constituting the front portion A. The lower end of the base sheet before is in the shape of a first row of arcs convex downward, and the shape of the folded portion is in the shape of a second row of arcs that is convex upward and symmetrical with respect to the chord of the first row of arcs. The slit-shaped spinneret D is formed at a portion of the bent lower end in contact with the inner surface of the rear portion B.

To be more specific, as shown in the developed view shown in FIG. 3, the main body portion 11 of the configuration shown in FIG. 1 has a front portion (A) and a rear portion (B) with their lower ends facing downward, respectively. In addition to being formed in a convex first arc shape, the front portion A is in continuous contact with both ends of the first arc shape, and is a folded portion of a second arc shape convex upward that is symmetrical to the first arc shape (e ), and the bottom surface portion (C) slides the bottom of the front portion (A) into contact with the inner surface of the rear portion (B), based on the second arc-shaped folded portion of the front portion, when the angle is almost 90 degrees. It is formed by folding and bending inward, and is formed in an oval shape when viewed from the bottom, extending from the folded portion of the second arc shape to the sliding contact portion with the lower end of the front portion (A) and the inner surface of the rear portion (B). , Additionally, the spinneret D is formed between the lower end of the front part and the inner surface of the rear part.

As shown in Fig. 5, it is also a preferred embodiment of the present invention to configure the part for providing the bottom surface as follows. In the device for protecting natural enemy insects shown in FIG. 5, the main body portion 11 is formed by further bending the lower end of the base sheet constituting the rear portion B in the device of the type shown in FIG. 1 described above. It overlaps the floor portion C installed next to the front portion A to form the floor portion C'. With this configuration, the slit-shaped spinneret D formed along the edge of the bottom surface portion C at a position in contact with the inner surface of the rear portion is not exposed to the outside by forming the bottom surface portion C'. For this reason, according to the natural enemy insect protection device of the type shown in FIG. 5, for example, when plants are sprayed, through the slit-shaped spinneret D provided at the lower part of the natural enemy insect protection device 10. It is possible to more reliably prevent water droplets from entering the inside of the device.

(Receiving part (12))

The accommodating part 12 used in this embodiment is arranged in the space of the main body part 11. Specifically, as shown in FIG. 2, in order to secure an air passage through which natural enemy insects can enter and exit, for example, at least two through holes (one or more openings of a predetermined size may be used) ( (not shown), for example, a combination of natural enemy insects and prey mites, or natural enemy insects, prey mites, and natural enemy insects, in a square or rectangular tea bag-shaped bag of 4 to 8 and/or a combination with food necessary for the growth of feeding mites is preferably accommodated. With this configuration, it is possible to provide an additional feeding place for natural enemy insects, and in addition to the functions of the main body portion 11 described above, for example, it is possible to further protect against chemical pesticides that affect the survival of natural enemy insects. Shelter can be provided.

Here, suitable examples of natural enemy insects include polyphagous mites such as Miyako mites, Swerski mites, and Cucumeris mites. In the present invention, at least prey mites (sugar mites, fine-legged meat mites, mealy mites, etc.) are used as food to support the activities of natural enemy insects. More preferably, for example, in addition to feeding mites (sugar mites, fine-legged meat mites, mealy mites, etc.), wheat bran, sugar, etc., which serve as food for feeding mites, may be used in combination. On the other hand, a moisturizing agent may be added into the receiving portion 12, but as described above, it is preferable that the moisturizing agent used does not form water droplets.

More specifically, as the receiving part 12 used in the present invention, for example, for 250 Swarskie mites, about 500 to 2000 prey mites are used, and 3.0 g of wheat bran and sugar are added. Examples include a mixture of 0.15 to 0.6 g. Additionally, you may use Arista Life Sciences, brand name “Swarski Plus.”

(in confined space)

As described above, in the protection device for natural enemy insects according to an embodiment of the present invention, a closed space 14 is formed inside the main body 11, and the above-described accommodation part 12 is disposed therein. As previously described, at that time, it is necessary to ensure that the gap between the inner surface of the main body 11, the outer surface of the receiving part 12, and the inner surface of the main body is 3.0 mm or less. . Preferably, it is desirable to arrange so that a part is formed where the gap is as narrow as possible, such as 2.0 mm or less, or 1.0 mm or less. On the other hand, this gap can be adjusted when inserting the receiving part 12 into the main body part 11. This gap can be measured using a vernier caliper, digital nozzle, or feeler gauge.

In a preferred form of the protection device for natural enemy insects of the present invention as described above, in the closed space 14, the previously described sustained-moisture retaining material is placed in a granular form swollen with water, for example, as shown in FIG. 4. It is desirable to accommodate the superabsorbent polymer (15). By doing this, the humidity in the sealed space 14 can be maintained at 70% or higher for 30 days or more, and at 80% or higher for 30 days or more with extreme ease. In the present invention, it is not limited to the above configuration, and for example, a sheet-shaped superabsorbent resin swollen with water may be disposed in the closed space 14, and the sheet-shaped superabsorbent resin swollen with water may be formed into an envelope shape. , it is also effective to arrange the receiving portion 12 therein (not shown).

As a protection device for natural enemy insects according to another embodiment of the present invention, the main body has an enclosed space inside, and has an outlet for the natural enemy insects to escape to the outside, and at least releases the It may be formed in the shape of an envelope (not shown) made of a moisture-retaining material, and a container 12 in which natural enemy insects and feeding mites can enter and exit may be disposed. In this case, it is necessary to make the outer surface water-repellent as a material constituting the envelope-shaped main body, and to use a water-repelling material as the forming material for the inner surface of the inner envelope body to be a water-retaining material that exhibits sustained moisture retention properties. By configuring in this way, the closed space formed inside the substitute allows natural enemy insects to enter and exit from the outside, water does not enter when sprayed on the main body, and the humidity is maintained at 70% or more for more than 30 days. It can be done as possible.

In addition, in the protection device for natural enemy insects of the present invention, in order to have a configuration that has many parts where the gap between the inner surface of the main body portion 11 and the outer surface of the receiving portion 12 is 3.0 mm or less inside the closed space 14, If necessary, a filling member may be further disposed to fill the gap formed inside the closed space 14 where the receiving portion 12 is disposed. Examples of the filling member include felt, gap sheets, hemp roots sheets, yarn, hemp yarn, embroidered cotton, and cotton wool. These members can be used to fill the above-mentioned gaps, or can be used by sandwiching the receiving portion 12 therebetween. The size of the filling member used is about 50 to 200 mm x 50 to 200 mm if it is in the form of a sheet such as felt, and the thickness is about 1 to 10 mm, and it is in the form of a string or mass such as yarn or cotton. If so, the size can be adjusted appropriately to fill the gap. When a member that fills these gaps is used, for example, it can serve as a place for laying eggs for feeding mites, maintains the proliferation of feeding mites, and further brings about an excellent effect in improving the habitability of natural enemy insects.

(Installation part (13))

As shown in FIG. 1, the protection device 10 for natural enemy insects of the present invention is connected to the main body 11 and includes an installation part for installation on the branches (not shown) of crops to be protected from pests, which are the installation targets. It is desirable to further provide (13). By means of the installation portion 13, it can be simply and easily hung directly on the branch or leaf to be installed. On the other hand, depending on the type of use, for example, it may be installed on the leaves of crops to be protected from pests without using the installation portion 13. In the protection device 10 for natural enemy insects shown in FIGS. 1 to 4, the installation portion 13 provided integrally with the sheet forming the rear portion B constituting the main body portion 11 is used, The closed space provided inside (11) is sealed to prevent water droplets from entering even when water is sprayed. Specifically, the part (a), which is the pasting part provided next to the rear part B constituting the main body 11 shown in FIG. 3, is bent inward, and the main body part (a) is attached to the part (a). The part (b) of the inner wall of the side end of the front part (A) constituting 11) is overlapped and glued, and then continued to the rear part (B) of the main body 11). At the position of the broken line at the boundary dividing the mounting portion 13 and the main body portion 11, the mounting portion 13 is bent toward the front portion A constituting the main body portion 11, and The mounting portion 13 is bent again at the position of the broken line so that only the strip-shaped portion (c) shown in FIG. 3 overlaps the upper portion (d) of the front portion (A), and the overlapped portion is glued or stapled. Fix it with your back. By doing this, as shown in FIG. 2, it becomes possible to form a sealed space inside the main body 11, especially the upper part, which is tightly sealed. Additionally, as mentioned above, the manufacturing method is extremely simple and is practical in this respect.

For example, as shown in FIG. 1, the installation portion 13 has a substantially square shape, and except for the upper side of the square shape, the other three sides have continuous lines that penetrate the portion connected to the base material of the main body portion 11. A cut portion is formed, and among the cut portions on the other three sides, the cut portions on the left and right sides have a symmetrical or asymmetric saw shape. By removing the cut portions on the three sides, leaving a square upper side, the installation object is described. Examples include those configured to form a tongue piece that can be detachably inserted and supported between the.

(Method of manufacturing a protection device for natural enemy insects)

When the protection device 10 for natural enemy insects of the present invention has a case shape, for example, according to the development diagram shown in FIG. 3, a sheet-shaped base material made of plastic or paper is punched into a strip shape to save space. The protection device 10 for natural enemy insects can be easily manufactured by assembling the branches into a case shape to form the main body 11 and inserting and disposing the receiving part 12. The same goes for the envelope shape. For example, in the case of the embodiment shown in Fig. 1 or Fig. 5, the product includes a sheet-shaped product in which only the bottom portion C is not assembled, and a storage portion 12 in which at least natural enemy insects and feeding mites are accommodated. , it is preferable to use a combination of ball-shaped superabsorbent resins before swelling with water as needed. In this way, the operator simply inserts the housing portion 12 and the ball-shaped superabsorbent resin, swollen with water and water removed as necessary, into the interior of the main body portion 11 from the bottom portion C side. , Then, by simply assembling only the bottom portion (C), a useful natural insect protection device (10) that can achieve the effects of the present invention can be obtained.

Also, as another product, there is a product in which an envelope-shaped water retention material formed by replacing the above-described ball-shaped superabsorbent resin and encapsulating water or moisture with a moisture-permeable membrane is used in a thin shape. As previously described, in this case, it is also possible to use the main body portion 11 with an envelope-shaped repair material previously attached to the inside. In this way, the effect of the present invention can be achieved by the operator simply inserting the receiving part 12 into the main body 11 from the bottom part C side and then assembling only the bottom part C. A useful natural insect protection device (10) can be obtained more easily.

[Example]

Below, the protection device for natural enemy insects of the present invention will be explained in more detail using examples. Meanwhile, the present invention is not limited in any way by the examples below.

(Example 1)

The natural insect protection device 10 shown in FIG. 1 was manufactured as follows. First, a sheet-shaped base material made of paper with a thickness of 0.4 mm and a water-repellent surface treated was punched into strips, and a sheet-shaped base material similar to the developed view shown in FIG. 3 before assembly was prepared. Meanwhile, the dotted line in FIG. 3 indicates the position where the housing portion 12, which is formed to accommodate natural enemy insects and feeding mites so as to be able to enter and exit the bag, is disposed, and the broken line indicates the bending position. The sheet-shaped base material in the expanded state prepared above was assembled in the following order to form the natural enemy insect protection device of this example shown in FIG. 1.

The part (a), which is the pasting part provided next to the rear part (B) constituting the main body 11 shown in FIG. 3, is bent inward, and the main body 11 is placed on the part (a). Overlap the part (b) of the inner wall of the side edge of the front part (A) and attach it with glue. Next, the installation part 13 provided continuously on the rear part B constituting the main body 11 is installed at the position of the broken line at the boundary dividing the installation part 13 and the main body 11. The portion 13 is bent toward the front portion A constituting the main body portion 11, and only the strip-shaped portion (c) shown in FIG. 3 overlaps the upper end portion d of the front portion A. To do so, the installation portion 13 is folded and bent again at the position of the broken line (see FIG. 2), and this overlapped portion is fixed with adhesive or a stapler. In this way, it was assembled so that a space was formed inside the main body portion 11. Then, after inserting the receiving portion 12 into this space, the portion indicated by the broken line (e) shown in FIG. 3 is bent about 90 degrees toward the rear portion (B) constituting the main body portion 11, A bottom surface portion C was formed and assembled into the case shape shown in FIG. 1.

The main body portion 11 formed in this way was 160 mm long x 70 mm wide x 20 to 30 mm in maximum depth. As shown in Figures 1 and 2, the formed main body portion 11 is divided by a front portion A and a bent portion, and a bottom portion C made of a sheet integral with the front portion is formed. A slit-shaped spinneret (D) is formed at a portion where the arc-shaped end of the bottom portion (C) is in contact with the rear portion (B) constituting the main body portion (11).

In the receiving part 12 inserted into the space of the main body 11, a tea bag-shaped bag with a size of 60 to 70 mm is filled with Swarski mites, prey mites (sugar mites), and wheat bran, each of 250 to 250 mm. 300 animals, 1000-2000 animals, 3.0g were used. Moreover, when housing it, the accommodation part 12 is placed in the upper part of the main body part 11, and the inner surface of the sealed space constituting the main body part 11 and the outer surface of the accommodation part 12 are separated. The gap was ensured to be 3.0 mm or less. In some cases, it was confirmed that there were parts of 1.0 mm or less.

Five natural insect protection devices (10) manufactured as described above were hung on the branches of mango trees by means of installation parts (13), five per tree. By observing the inside of this device, the population (adults, larvae) and eggs of Swirski's mites and the population of sugar mites (adult larvae), which are prey mites, were observed on the outside of the receiving part 12 and the inside of the main body 11. And the number was counted. The results are shown in Table 1.

The numbers in Table 1 are the cumulative number of individuals or eggs observed on the 6th, 12th, and 19th days after installation of the natural enemy insect protection device (10), and are the average of the five protection devices (10). Sugar mites, which are feeding mites that support the activity of the Swarski mite, are laying eggs in the main body 11, and the sugar mites that come out of the receiving part 12 are inside the main body 11 of the protection device 10. You can see that it is active.

(Example 2)

The case-shaped main body portion 11 of the natural enemy insect protection device 10 shown in FIG. 1 was formed in the same manner as in Example 1. In this embodiment, the same accommodating part 12 as used in Example 1 is inserted into the closed space 14 of the main body 11 and arranged in the same state as in Example 1, and the scattering part is placed in the same state as in Example 1. (100 mm long x 50 mm wide x 1 mm thick felt) (not shown) was inserted into the receiving portion 12 so that they were facing each other. The bottom surface portion (C) was produced by bending the portion (e) to about 90 degrees, as in Example 1.

The manufactured natural insect protection devices were hung on the branches of Unshu tangerine trees, one per tree, by the installation unit 13. The inside of this device was observed, and the number of Sworski mites (adult larvae) and the number of sugar mites (adult larvae) observed on the outside of the receiving part 12 and inside the main body 11 were counted. The results are shown in Table 2.

The numbers in Table 2 are the cumulative number of individuals observed on the 4th, 10th, and 19th days after installation of the natural enemy insect protection device, and are the average of the three protection devices (10).

(Example 3)

The main body 11 of the natural enemy insect protection device 10 was assembled in the same manner as manufactured in Example 2, and in the closed space 14 of the main body 11, as in Example 2, in Example 1. The same accommodating part 12 as used and the scattering part were inserted with the accommodating part 12 facing each other. In this embodiment, in the sealed space 14 of the main body 11, a superabsorbent resin (spherical shape, about 1 cm in diameter when absorbed) is placed in the sealed space 14 of the main body 11, which has been previously absorbed and has well removed surface water. Three pieces per protection device were inserted into the bottom of the device (see FIG. 4), and part (e) was folded and bent to form the bottom portion (C). Thereafter, the natural insect protection devices 10 manufactured as described above were hung on the branches of the Unshu tangerine tree, one per tree, by means of their installation portions 13. The inside of this device was observed, and the population of Swarski's mites (adult larvae) and the population of sugar mites (adult larvae), which were prey mites, observed on the outside of the receiving part 12 and the inside of the main body 11 were counted. . The results are shown in Table 3.

The numbers in Table 3 are the cumulative number of individuals observed on the 4th, 10th, and 19th days after installation of the natural enemy insect protection device, and are the average of the three protection devices (10).

(Example 4)

The main body portion 11 of the natural enemy insect protection device 10 was assembled in the same manner as manufactured in Example 2. At that time, in the closed space 14 of the main body 11, a container 12 similar to that used in Example 1 and a moisture-permeable film (product name: moisture-permeable film KFT/Mitsubishi resin) were used to seal water into an envelope shape. The repair material of was inserted, and the part (e) was folded and bent to form the bottom surface portion (C). The above-mentioned repair material was used with a weight of 8g in a water-filled state, and its size was 80 mm in length and 40 mm in width, and its maximum thickness was 5 mm. The protection device for natural insect enemies manufactured in this way can be used in the same manner as Example 3 above, and exhibits excellent settlement properties of natural enemy insects.

As an example of application of the present invention, it is effectively used in the management of agricultural crops, especially in IPM (integrated pest management) focusing on natural enemies.

10: Natural insect protection device
11: Main body
12: Receiving part
13: Installation part
14: Confined space
15: Western moisture repair material
A: Front
B: Rear
C, C': Bottom surface
D: Spinneret

Claims (13)

As a protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for the natural enemy insects,
A main body portion in the shape of an envelope or case body having a sealed space inside,
a receiving portion disposed in the sealed space of the main body portion, wherein the natural enemy insects and the feeding mites are accommodated in an envelope body,
The gap between the inner surface of the sealed space of the main body portion and the outer surface of the receiving portion, which oppose each other, is 3.0 mm or less,
The accommodating part is in a tea bag-shaped bag, and is either a combination of the natural enemy insects and the feeding mites, or a combination of the natural enemy insects and the feeding mites plus food necessary for the growth of the natural enemy insects and/or the feeding mites. A protection device for natural enemy insects, characterized in that it has a configuration in which one combination is accepted. As a protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for natural enemy insects, which are natural enemies of pests,
A main body portion in the shape of an envelope or case body having a sealed space inside,
A receiving portion disposed in the sealed space of the main body, where the natural enemy insects and the feeding mites are accommodated in an envelope, and a member made of a water-retaining material with sustained moisture retention,
The enclosed space is configured so that the natural enemy insects can enter and exit from the outside, water does not enter when sprayed on the main body, and the humidity can be maintained at 70% or more for more than 30 days,
In addition, protection of natural enemy insects, characterized in that it is configured to have a portion where the inner surface of the main body forming the closed space and the outer surface of the receiving portion face each other, and the gap between them is 3.0 mm or less. Device. As a protection device for natural enemy insects that improves the habitability of natural enemy insects by maintaining the proliferation of feeding mites that serve as food for natural enemy insects, which are natural enemies of pests,
A water-retaining material that has an enclosed space inside, has an outlet for the natural enemy insects to escape to the outside, and exhibits sustained moisture resistance to at least the enclosed space inside. A main body portion formed in the shape of an envelope,
It is disposed in the closed space, and has a receiving portion in which the natural enemy insects and the feeding mites can be accommodated in the envelope body,
The enclosed space is configured so that the natural enemy insects can enter and exit from the outside, water does not enter when sprayed on the main body, and the humidity can be maintained at 70% or more for more than 30 days,
In addition, protection of natural enemy insects, characterized in that it is configured to have a portion where the inner surface of the main body forming the closed space and the outer surface of the receiving portion face each other, and the gap between them is 3.0 mm or less. Device. According to claim 2 or 3,
A protection device for natural enemy insects, wherein the enclosed space is configured to be maintained at a humidity of 80% or more for more than 30 days. According to claim 2 or 3,
A protection device against natural enemy insects, wherein the sustained-moisture retention material is made of a superabsorbent resin. According to claim 2,
A protection device for natural enemy insects, wherein the receiving portion is accommodated in a bag made of a highly absorbent resin with sustained moisture properties, and is disposed in the sealed space of the main body portion. The method of claim 1 or 2,
A protection device for natural enemy insects, wherein the main body has a spinneret through which the natural enemy insects can enter and exit to the outside, at the bottom of the main body if it has an envelope shape, or on its bottom if it has a case shape. delete The method of claim 1 or 2,
The case-shaped main body portion has the sealed space formed with a sheet-shaped base material made of paper or plastic whose surface is water-repellent treated, and the sealed space includes a front portion, a rear portion facing the front portion, and A protection device for natural enemy insects, which has a bottom portion and a slit-shaped spinneret through which the natural enemy insects can enter and exit to the outside, and is sealed to prevent water droplets from entering the enclosed space from the outside other than the slit-shaped spinneret. According to clause 9,
The bottom surface portion is formed by being partitioned from the front portion and/or the rear portion by a folded portion obtained by bending at least one lower end of the sheet-shaped substrate constituting the front portion and/or the rear portion, and is formed by folding and bending. The lower end of the sheet-like base material before is in the shape of a first arc convex downward, and the shape of the folded portion is in the shape of a second arc convex upward, symmetrical with respect to the chord of the first arc shape. A protection device for natural enemy insects having a structure in which the slit-shaped spinneret is formed at least at a portion of the bent lower end of the sheet-shaped substrate in contact with the inner surface of the front part or the inner surface of the rear part. According to any one of claims 1, 2 or 3,
The natural enemy insects are milt mites, and the prey mites are mealy mites, such as sugar mites, fine-legged meat mites, and long-haired mealy mites. According to any one of claims 1, 2 or 3,
A protection device for natural enemy insects, in which a filling member is further disposed in the sealed space of the main body to fill the gap formed therein. According to claim 12,
A protection device for natural enemy insects, wherein the filling member is at least one selected from the group consisting of felt, gap sheet, hemp root wrapping sheet, yarn, hemp yarn, embroidery cotton, and cotton wool.