JP2017127301A - Protective device of natural enemy insect - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective device of natural enemy insects, the device that provides a habitat optimized based on the behavior of bait mites being the substitute bait of the natural enemy insects in terms of IPM, and maintains the growth of the bait mites for a long term, and thereby settlement properties of the natural enemy insects preying on the bait mites are improved for a long term.SOLUTION: A protective device of natural enemy insects is improved in settlement properties of the natural enemy insects by maintaining the growth of bait mites of the natural enemy insects for harmful insects. The protective device includes a bag-shaped or box-shaped body having a sealed space inside, and a storage disposed in the sealed space of the body and having the natural enemy insects and bait mites stored in a bag body so as to come in/out. The protective device of the natural enemy insects is configured as follows: an interval between an inner surface of the sealed space of the body opposed to each other and an outer surface of the storage is 3.0 mm or less; more preferably, a member comprising water retention materials of the sustained release moisture is included in the sealed space; the sealed space enables the natural enemy insects to come in/out of the outside; water does not enter inside when the body is watered; and the humidity can be maintained 70% or more and 30 days or more.SELECTED DRAWING: Figure 1

Description

  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 habitat environment based on the habits of bait mites, which are the bait of natural enemy insects, as well as natural enemy insects, which are natural enemies of pests. The present invention relates to a device for protecting natural enemy insects, which can maintain the growth of prey mites over a long period of time and can improve the settleability of natural enemy insects, and can more effectively carry out pest control on plants.

  In recent years, IPM (Integrated Pest Management) centering on natural enemies has attracted attention. The IPM is a management method that uses, for example, polyphagous mites, such as Miyako mites, Swarsky mites, Kukumeri mites that feed on spider mites and thrips that are pests to be controlled, as natural enemy insects. On the other hand, it is known that natural enemy insects proliferate when so-called prey mites such as sugar mite and Sayaashi mite are given as an alternative food when there is no or a small number of the above-mentioned pests that are the original food. ing. These bait mites are found as pests of preserved foods such as sugar, flour, kinako, dried fruit or bonito and can be grown in large quantities. For this reason, in theory, natural enemy insects can be bred in large quantities by using bait mites. However, bait mites are active in an environment with sugar, flour, etc., which is different from the environment above the growing crop, which is the place where the natural insects feed, which is the natural bait, as described above. Therefore, even if these bait mites were applied together with natural enemy insects on crops for the purpose of pest control, the activities of natural enemy insects could not be sufficiently supported.

  In the above case, in order to maintain the number of natural enemy insects, a method of adding these bait mites on the crop is also considered, but it is complicated. Moreover, in order to combine with the control by a chemical pesticide, it is necessary to increase an additional frequency, and cost increases. In order to solve such a problem, a method has been considered in which both natural enemy insects and prey insects that serve as food for natural enemy insects are placed in one apparatus, and this apparatus is installed in a crop cultivation field.

  Specifically, for example, it is composed of a container containing a moisturizer, water, natural enemy insects, food insects that serve as food for natural enemy insects, a medium for cultivating mold that serves as food for food insects, and a spawning substrate for natural enemy insects. A natural enemy insect breeding apparatus has been proposed (see Patent Document 1).

JP 2007-325541 A

  However, according to the study by the present inventors, the device disclosed in Patent Document 1 has a complicated configuration and is not practically easy to use. It was not always satisfactory in terms of settlement. As a result of examining the cause in detail, the present inventors have obtained the following findings. Natural enemy insects also have the habit, but bait mites, which are the food of natural enemy insects, have a habit of preferring narrow places, and the device disclosed in Patent Document 1 is first devised in this respect. However, it was not suitable as a habitat that allowed for continuous growth of prey mites.

  Moreover, in the apparatus disclosed in Patent Document 1, in order to maintain an appropriate humidity, when drying continues, the humidity is maintained by appropriately filling water on the apparatus or from a water injection hole. Moreover, although cotton-like pulp, sodium alginate, etc. are used as a moisturizing agent, when water is added to these moisturizing agents, in any case, water droplets exist in the apparatus. On the other hand, in the maintenance of the growth of natural enemy insects, especially the food mites that are the food of natural enemy insects, the existence of water droplets in their habitats must be avoided for the reasons described below. The device configured as disclosed in Document 1 is particularly unsuitable for maintaining the growth of prey mites, and it has been concluded that further studies are necessary to achieve the settlement of natural enemy insects over a long period of time. It was. That is, for example, acarid mites such as sugar mites, Sayaashi mite, and Kenagakonadani, which are prey for natural enemy insects such as red mites, like water and have a habit of gathering in that direction when there are water droplets. On the other hand, these mites have a very small body length of 0.3 to 0.5 mm, so they drown and die in water droplets. I knew that I couldn't.

  In addition, in IPM (Comprehensive Pest Management) using natural enemy insects, it is necessary to install a large number of natural enemy insect protection devices in a wide crop cultivation field. It is desirable that the load (labor) applied to the worker be as small as possible and achieve a reduced labor saving. Also from this point, if the natural enemy insects can be released stably and stably from the device for a longer period of time after the device is installed, it is not necessary to replace the device frequently, so that the operator can replace the device. This is very useful because it saves labor and can save a lot of labor. This is a very important point in practical use, and the conventional apparatus is required to be further improved.

  In view of the above-described problems, an object of the present invention is a natural enemy capable of effectively protecting natural enemy insects and prey mites serving as food for natural enemy insects from changes in the environment, while having an extremely simple configuration. It is to provide an insect protection device. More specifically, the object of the present invention is to provide an optimized habitat based on the habits of bait mites, which are substitute foods for natural enemy insects, from the viewpoint of IPM (Integrated Pest Management). Natural enemies that can improve the segregation of natural enemies that prey on prey mites that live in the device and improve the long-term growth of prey mites. It is to provide a protection device. Furthermore, the final purpose of the present invention is to realize such an excellent natural enemy insect protection device, and because it uses living organisms, it is extremely difficult to develop stable effects and maintain the effects. An object of the present invention is to provide a technology with high practical value that can stably carry out the control of insect pests and that reduces the work load on the person who uses the apparatus.

  The above object is achieved by the present invention described below. That is, according to the present invention, the following natural enemy insect protection device is provided. In addition, the humidity as used in the field of this invention means the relative humidity in 25 degreeC.

[1] A natural enemy insect protection device that improves the settleability of natural enemy insects by maintaining the growth of prey mites which are natural enemy insects that become natural enemies of pests. A housing-like main body portion, and a housing portion that is disposed in the sealed space of the main body portion and is housed in the bag body so that the natural enemy insects and the bait mites can enter and exit, facing each other, An apparatus for protecting natural enemy insects, wherein a distance between an inner surface of the sealed space of the main body and an outer surface of the housing portion is 3.0 mm or less.

[2] A device for protecting natural enemy insects that improves the settleability of natural enemy insects by maintaining the growth of prey mites that are prey of natural enemy insects that are natural enemies of pests. A casing-shaped main body, a storage section disposed in the sealed space of the main body section, in which the natural enemy insects and the bait mites are stored so as to be able to enter and exit, and a water-retaining material that gradually releases moisture. And the sealed space is configured such that the natural enemy insects can enter and exit, the water does not enter when sprinkled on the main body, and the humidity can be maintained at 70% or more for 30 days or more. Furthermore, the gap between the inner surface of the main body portion that forms the sealed space and the outer surface of the housing portion is configured to have a portion that is 3.0 mm or less. A natural enemy insect protection device.

[3] A natural enemy insect protection device that improves the settleability of natural enemy insects by maintaining the growth of prey mites which are natural enemy insects that serve as natural enemies of pests, and has a sealed space inside, and A bag-like main body formed of a water retaining material having a release port to the outside of the natural enemy insects, and at least gradually releasing moisture with respect to the sealed space inside, and disposed in the sealed space. Provided with a storage part in which the natural enemy insects and the bait mites are stored in a bag body so that the natural enemy insects can enter and exit, the sealed space can enter and exit the natural enemy insects, and water does not enter when sprinkled on the main body part, And it is comprised so that the humidity can be maintained for 30 days or more to 70% or more, and both in the part where the inner side surface of the main part which forms the sealed space, and the outer side surface of the storage part oppose It has a part whose interval is 3.0 mm or less Protector natural enemy insects, characterized by being composed urchin.

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

[5] The natural enemy insect protection device according to [2] or [3], wherein the sustained moisture-retaining water retention material is made of a highly water-absorbent resin.

[6] The natural enemy insect protection device according to [2], wherein the housing portion is housed in a bag made of a highly moisture-absorbing resin that gradually releases moisture, and is disposed in the sealed space of the main body portion.

[7] The main body portion has a release port through which the natural enemy insects can enter and leave the outside at the lower end of the main body when it is bag-shaped and at the bottom of the case when it is a housing. ] The natural enemy insect protection device described in the above.

[8] The container includes a combination of the natural enemy insects and the bait mites, or the propagation of the natural enemy insects and / or the bait mites in addition to the natural enemy insects and the bait mites in a tea bag-shaped bag. The device for protecting natural enemy insects according to any one of the above [1] to [7], which is configured to accommodate any combination of baits and baits necessary for the above.

[9] The casing-shaped main body portion is formed of a sheet-like base material made of paper or plastic having a water-repellent surface, and the sealed space includes a front surface portion and the front surface. A rear surface portion opposed to the portion, a bottom surface portion, and a slit-shaped release port through which the natural enemy insect can enter and exit, and outside the slit-shaped release port from the outside in the sealed space The natural enemy insect protection device according to [1] or [2], which is sealed so that water droplets do not enter.

[10] The bottom surface portion is defined as the front surface portion and / or the rear surface portion by a crease formed by bending at least one lower end of the base sheet constituting the front surface portion and / or the rear surface portion. The lower end of the base sheet before being bent has a first subarc arc shape that is convex downward, and the shape of the fold line is symmetric with respect to the chord of the first subarc arc shape. The slit-shaped release port is formed at a portion where the bent lower end is in contact with the inner surface of the front surface portion or the inner surface of the rear surface portion. The natural enemy insect protection device according to [9] above in structure.

[11] The apparatus for protecting a natural enemy insect according to any one of [1] to [10], wherein the natural enemy insect is a spider mite, and the prey mite is a mite such as a sugar mite, a Sayaani mite, or a staghorn mite.

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

[13] The natural enemy insect according to [12], wherein the filling member is at least one selected from the group consisting of felt, skimmer sheet, hemp root wound sheet, wool, twine, handicraft cotton and absorbent cotton. Protection device.

[14] The apparatus according to any one of [1] to [13], further including an installation unit connected to the main body unit, the installation unit being installed on a branch or leaf of a crop to be protected from the pests to be installed. Protection device for natural enemy insects.

[15] The main body has a casing shape including at least a front surface, a rear surface facing the front surface, the bottom surface, and the release port that constitute the sealed space, and the front surface and the rear The surface portions are formed in a first arc shape whose lower ends are convex downward, and the front surface portion is connected to both ends of the first arc shape, and is symmetrical to the first arc shape. The second arc-shaped crease is convex upward, and the bottom surface portion has a lower end of the front surface portion as an inner surface of the rear surface portion with reference to the second arc-shaped fold of the front surface portion. It is formed by bending inward until it reaches approximately 90 degrees while being in sliding contact, and extends from the second arc-shaped fold to the sliding contact portion between the lower end of the front surface portion and the inner surface of the rear surface portion. Is formed in an elliptical shape in a bottom view, and further the release port , Protector of natural enemy insects according to formed comprising said [1] or [2] between the lower end and the inner surface of the rear surface of the front portion.

  According to the present invention, there is provided an apparatus for protecting natural enemy insects that can effectively protect natural enemy insects and prey mites serving as food for natural enemy insects from environmental changes, even though the apparatus has a very simple configuration. Is done. More specifically, according to the present invention, an optimized habitat environment can be provided from the viewpoint of IPM (Integrated Pest Management), particularly based on the habits of bait mites that are alternative bait for natural enemy insects. It is possible to realize the long-term growth maintenance of prey mites by improving the sex, and this can improve the settlement of natural enemy insects that prey on prey mites that live in the device. A high natural enemy insect protection device is provided. Furthermore, according to a preferred embodiment of the present invention, by realizing an excellent natural enemy insect protection device as described above, since living organisms are used, it is extremely difficult to develop stable effects and maintain the effects. Provided is an economical and high-practical value technology that can stably carry out pest control by natural enemy insects, and can reduce the load in installation work for workers to use.

It is a perspective view showing typically an example of a natural enemy insect protection device concerning an embodiment of the invention. FIG. 2 is a side view schematically showing a configuration of a housing part of the natural enemy insect protection apparatus shown in FIG. The circle in the drawing is a schematic cross-sectional view taken along line xx ′. It is a top view (development figure) which shows typically the state before the assembly of the natural enemy insect protection apparatus shown in FIG. FIG. 6 is a side view schematically showing a configuration of a housing part of a protection apparatus for natural enemy insects according to another embodiment of the present invention, partly broken. It is a perspective view which shows typically the protection apparatus of the natural enemy insect which concerns on another embodiment of this invention. FIG. 6 is a side view schematically showing a configuration of a housing portion of the natural enemy insect protection device shown in FIG.

  Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. In contrast to the above-described current state of the prior art, the present inventors have made a detailed study on the habits of bait mites that serve as food for natural enemy insects, and are able to reliably and stably propagate bait mites over a longer period of time. If it is possible to complete a simple device capable of optimizing the habitat environment of prey mites, it is possible to continuously release natural enemy insects that feed on prey mites from the device over a long period of time. With the recognition of this, we conducted an extensive study.

  The present inventors have already used as a device for breeding natural enemy insects, which are natural enemies of pests, for agriculture to be used to provide a feeding ground, a spawning place, and an adult cocoon for insect pest control for pest control. There has been proposed a natural enemy insect protection device with a housing-like structure made of a sheet material made of paper or plastic and containing a natural enemy insect for gardening (Japanese Patent No. 581334). And in the Example, the food body mite with rice bran, bran, etc. is accommodated in the bag body which is a storage part of natural enemy insects as food required for the growth of natural enemy insects. The present inventors have confirmed that even with the device proposed above, natural enemy insects can be released continuously, and pest control is easier and more effective than conventional devices. In order to achieve the object of the present invention, which increases the level of awareness, it has been recognized that it is necessary to establish a technique that can make more positive and reliable use of bait mites.

  Based on the above recognition, the present inventors have intensively studied to develop a more effective natural enemy insect protection device than the devices already proposed by the present inventors. In the process, the internal shape of the casing made of paper or plastic sheet base material is changed variously, and intensive studies are carried out to find the optimal habitat environment for the natural mite insects as well as the food mites. It was. As a result, it was found that acarids that feed on natural enemy insects have a habit of particularly favoring narrow spaces. Therefore, the present inventors set the sealed space in the sealed space formed inside the case-like main body when the accommodating portion in which the natural enemy insects and bait mites are accommodated in the bag body. As a result of studying by narrowing the distance between the inner surface of the main body part and the outer surface of the housing part which are formed, the distance between the two is narrowed. It has been found that natural enemy pests can continue to live in the enclosed space for a longer period of time.

  And if there is a slight slit-shaped gap, natural enemy insects can easily enter and exit from the enclosed space, prey on the pests on the growing crops, and as a result, the IPM continues in good condition. It was confirmed that More specifically, as the above-mentioned narrow space, at least 3.0 mm or less, preferably 2.0 mm or less, and further 1.0 mm or less narrow enough to be considered that the mite as a bait feels a wall around it. It was found that it is desirable that the space of the interval exist in the habitat. For this reason, a gap of more than 3.0 mm is formed inside the sealed space in a state in which a housing part that accommodates natural enemy insects and bait mites is provided inside the housing-like main body part. Preferably, a filling member for filling the gap is further arranged. In this way, a larger number of portions having an interval of 3.0 mm or less can be provided in the habitat area of natural enemy insects and prey mites, so that especially the growth of prey mites is maintained better. As a result, the settleability of natural enemy insects can be further improved. Details of this point will be described later.

  The present inventors considered that temperature, humidity, and the like are important factors in addition to the above-mentioned physical habitat, and have also performed detailed studies on this point. It is known that it is desirable to maintain humidity moderately in order to improve the habitat environment of the mosquitoes that are natural enemy insects. For example, in Patent Document 1 mentioned above, it is preferable that the humidity of the habitat of natural enemy insects is maintained at 55% or more by always keeping the moisturizing state by adding water to the moisturizing agent. On the other hand, according to the example of Patent Document 1, although depending on the type of moisturizing agent used, even when sodium alginate having better humidity retention was used, the humidity after one day was 99% RH. On the other hand, the humidity after 7 days is reduced to 72% RH and to 14% on the 14th day. On the other hand, in the technique of Patent Document 1, water is poured into the moisturizer in the breeding apparatus at intervals of about one week as a countermeasure.

  However, according to the study by the present inventors, as described above, when a food mite such as acarid mite serving as a food for natural enemy insects is present in the apparatus environment described in Patent Document 1, water is preferred. From the habit, we gathered in the injected water droplets and drowned in the water, and we found that it is particularly difficult to stably maintain the growth of prey mites. Furthermore, the above technique requires the user to inject water into the moisturizing agent in the breeding apparatus at intervals of about one week, and there is a problem in terms of practical use. Further, as a result of further studies, the mite such as sugar mite, Sayaashi mite, Kenagakonadani, which are the food of natural enemy insects, has a higher humidity than natural enemy insects, specifically, the humidity is 70% or more, more preferably the humidity. It has been found that a high humidity environment of 80% or more is particularly suitable as the habitat environment.

  In response to the various findings described above, the present inventors have previously proposed a simple housing-like casing made of a paper or plastic sheet base material that houses natural enemy insects. A more detailed study was conducted on the structure of a natural enemy insect protection device (hereinafter referred to as a conventional device). As a result, although the conventional device has a structure in which a relatively narrow space exists, it is not conscious of this point strongly, so it could not be said that it is an optimal habitat especially for bait mites. . On the other hand, it was found that a narrow space preferred by bait mites can be reliably formed in the vicinity of the bait mites feeding area by basically adopting the configuration shown in FIG. 1 described later. Specifically, the distance between the inner surface of the main body portion forming the sealed space and the outer surface of the housing portion where the natural enemy insects and bait mites are housed in the bag body so as to be able to go in and out, It is extremely effective for maintaining the growth of bait mites to have a portion of 3.0 mm or less, more preferably 2.0 mm or less. In addition, as described above, a filling member for filling a gap of more than 3.0 mm formed in the sealed space of the main body is disposed for the purpose of providing more portions having a distance of 3.0 mm or less. It is preferable to make it.

  Furthermore, as a result of measuring the humidity in the conventional apparatus previously proposed by the inventors, the inventors have stably maintained the humidity in the apparatus at least 50% or more for at least one and a half months. I was sure that. On the other hand, in the conventional apparatus, although the degree differs depending on the form, the invasion of water into the apparatus was not taken into consideration. It was found that water intrusion into the device is unavoidable if water is sprayed from strong or multi-directional. For this reason, it is important that the environment in the apparatus is a state in which water is not infiltrated even if water is sprayed, in addition to stably maintaining a higher humidity than the conventional apparatus. I recognized that.

  To that end, when a water spray or raining, it is necessary to have at least a narrow release port that allows natural enemy insects to enter and exit, so that water does not enter the device. The sealed space where the bait mites live must be sealed so that water drops do not enter from the outside as much as possible. Further, in addition to the above configuration, the humidity in the sealed space where the natural enemy insects and their food mites live can be maintained at 70% or higher, preferably 80% or higher, and more than 85%, for at least 30 days. If it can be constructed, the natural enemy insect can be stably released over a long period of time, and the natural enemy insect protection device has extremely high practical value. As a result of intensive studies on this point, the present inventors put the sustained moisture release water retaining material in the sealed space of the main body portion of the sealed structure as much as possible, thereby reducing the humidity in the sealed space to the above. It has been found that it can be maintained at a high humidity and for 30 days or more.

  As the sustained moisture-retaining water retaining material, a superabsorbent resin developed for horticulture is preferably used. This highly water-absorbent resin can be used by a method that is easy for the user, for example, to be inserted into the sealed space of the main body in a state of containing water. Although it is such a simple usage method, the humidity in the sealed space in which bait mites inhabit can be maintained in the appropriate state described above. Use of such a highly water-absorbent resin is one of desirable aspects of the present invention.

  Moreover, in this invention, the thing etc. which enclosed water or the water | moisture content with the moisture-permeable film | membrane which lets only water vapor pass without passing water other than the said highly water-absorbing resin can be utilized effectively. The term “moisture” as used herein refers to water configured to release water vapor through a moisture-permeable film, such as water-absorbing resin containing water. As the material exhibiting water absorption used at this time, general-purpose water-absorbent resins, high water-absorbent resins developed for horticulture mentioned above, and the like can be used. In addition to these, for example, in addition to naturally derived materials such as agar, mannan, agar, gelatin, and pectin, gelling agents and thickeners made from these naturally derived materials can also be used. That is, it is also possible to use a form in which these are contained in water and enclosed in the moisture-permeable film as a sustained moisture release water retaining material for placing in a sealed space of the main body. The superabsorbent resin and moisture-permeable film developed for horticultural use described above are those that release moisture in the state of water vapor after enclosing water or moisture, even if bait mites that like water have gathered. It is also possible for ticks to walk on the surface, never drowning and dying. The use of such a water-retaining material is one of the important factors in providing a habitat that allows for the continuous growth of prey mites.

  Typical examples of the superabsorbent resin useful as a sustained moisture-retaining water retaining material include those made of a crosslinked polyacrylate, which are also sold under the name of crystal soil, etc. In the invention, such a product can be used. Specifically, for example, Aqua Pearl (trade name), Sunwet (trade name) manufactured by Sanyo Chemical Co., Ltd., Jewel Polymer (trade name) sold by Daiso Sangyo Co., Ltd., etc. can be used. These highly water-absorbent resins expand 100 times or more when water is added, and can retain a large amount of water inside, while exhibiting sustained moisture release. In the present invention, when using a ball made of a highly water-absorbent resin, it is important to cut off the water in a state where it is expanded by adding water. The reason for this is that, as described above, if water droplets exist in the sealed space, food mites gather toward the water droplets and drown in the water droplets, so that the growth cannot be stably maintained. A highly water-absorbent resin ball that has been inflated with water can be inserted into the sealed space of the main body as it is. In addition, when using a plurality of balls made of superabsorbent resin expanded by adding water, it is possible to insert them into a sealed space of the main body in a form in which they are enclosed in a moisture-permeable bag or the like. .

  As described above, in the present invention, it is required to maintain the humidity in the sealed space of the main body at, for example, 70% or more for 30 days. For this purpose, it is important that the water retaining material disposed in the sealed space of the main body portion keeps water vapor properly released. Examples of the material of the superabsorbent resin (polymer compound) useful as a water retention material exhibiting such a function include those described above. Among these, it is more preferable to use a temperature-responsive polymer compound that exhibits a functionality that regulates the release of water vapor according to the ambient temperature. Specifically, for example, water vapor is released at a temperature near or above room temperature, and at a temperature lower than room temperature, particularly at a temperature at which condensation is a concern, the water vapor release stops and moisture is absorbed. A polymer compound can be suitably used. Such a polymer compound is commercially available, referring to the moisture release and moisture absorption temperature set for each product, and the cultivation target crops and cultivation facilities to which the natural enemy insect protection device of the present invention is applied. It is preferable to select and use appropriately according to conditions and the like. In this case, it is also a preferred form to use a plurality of types of polymer compounds in combination.

  As mentioned earlier, a moisture-permeable membrane that allows only water vapor to pass through without using water, using water retaining material in the form of enclosing water or moisture, generated from the water retaining material through the moisture-permeable membrane The form of the natural enemy insect of the present invention is also configured so that the moisture in the sealed space of the main body portion of the sealed structure can be maintained at a desired high humidity by introducing the water vapor to be introduced into the sealed space. This is a preferred embodiment of the protective device. In this case, the water retaining material to be used is not limited to the superabsorbent resin exhibiting the above-mentioned sustained moisture release property, and materials having various water retaining properties as exemplified above can be appropriately selected and used. Moreover, when it is set as the said form, the humidity in the sealed space of a main-body part can be adjusted to a desired state by adjusting suitably the area and thickness of a moisture-permeable film | membrane, or the material of a film | membrane, for example. .

  If the bag-shaped water retaining material in which water or moisture is sealed with a moisture-permeable film is formed into a thin shape with a thickness of, for example, about 0.5 to 10.0 mm, it can be used in a state of being attached inside the main body. It is. In that case, since the work of inserting the water retaining material into the apparatus, which occurs when the natural enemy insect protection apparatus of the present invention is installed in the crop cultivation field, can be omitted, the work efficiency at the time of installation is improved. It is useful in. As the bag-shaped water retaining material in which water or moisture is enclosed, for example, a material having a length of about 20 to 100 mm and a width of about 20 to 100 mm can be used. Here, when using a bag-shaped water retention material in a state of being 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 in the crop cultivation field, It is effective to cover the bag portion made of a moisture-permeable film with a moisture-proof sheet or the like. If it does in this way, it will become possible to adjust the humidity in the sealed space in a protection device efficiently without loss by removing the moisture-proof sheet at the time of installation. In addition, it is possible to use the water-retaining material in a state where the water-retaining material is attached to the inside of the main body and covered with a moisture-proof sheet or the like as well as the above-described form. For example, the water-absorbing highly water-absorbent resin may be directly attached to the inside of the main body without being enclosed in a moisture-permeable film and covered with a moisture-proof sheet or the like. As the moisture permeable membrane that allows only water vapor to pass therethrough, for example, a microporous polyolefin film is desirable, and specifically, a moisture permeable film KFT (trade name) manufactured by Mitsubishi Plastics. Etc. can be used.

  When the protection apparatus for natural enemy insects of the present invention is installed and used in facilities such as greenhouses and greenhouses, humidity adjustment is usually not performed in these facilities. Therefore, in the protection apparatus for natural enemy insects of the present invention, keeping the humidity in the sealed space of the main body within a desired range is extremely useful for stable release of natural enemy insects. According to the natural enemy insect protection apparatus of the present invention, the humidity in the sealed space can be maintained at 70% or higher, preferably 80% or higher, more preferably 85% or higher for at least 30 days. The specific means differs depending on the size of the main body and the material used for it, and cannot be defined unconditionally. For example, it can be realized by placing the water-retaining material in a sealed space so that the weight of water or water is 0.8 to 20 g, preferably 4 to 10 g.

  With reference to the drawings, a configuration of a natural enemy insect protection device according to an embodiment of the present invention will be described. As shown in FIG. 1 to FIG. 4, the natural enemy insect protection device 10 of the present invention has the following structural features to improve the growth of prey mites serving as natural enemy insects that serve as pest natural enemies. This can improve the settlement of natural enemy insects. That is, the natural enemy insect protection device of the present invention includes a bag-like or casing-like main body 11 having a sealed space inside, and the natural enemy insects and bait mites arranged in the sealed space of the main body 11. And an accommodating portion 12 that is accommodated so as to be able to enter and exit, and has a portion in which the distance between the inner surface of the sealed space of the main body portion 11 and the outer surface of the accommodating portion 12 is 3.0 mm or less, which face each other It is comprised by these. In addition, as shown in FIG. 4, the natural enemy insect protection device of the present invention has a configuration in which a member 15 made of a sustained moisture-releasing material is further disposed in the sealed space of the main body 11. It shows a more remarkable effect. Hereinafter, each component will be described in detail.

(Main body 11)
The main body 11 constituting the natural enemy insect protection device of the present invention has a bag shape or a housing shape having a space, and the housing shape includes, for example, a cylindrical shape (an elliptical bottom surface and a track shape). ), And those having a prismatic shape (including those whose bottom surface is a triangle or a polygon of a quadrangle or more). The size of the bottom surface is preferably about 10 to 50 × 30 to 100 mm, for example, in terms of a rectangle. Moreover, it is preferable that the length of the main body is about 80 to 300 mm and the width is about 70 to 200 mm. Moreover, as shown in FIGS. 1-4, the main-body part 11 which has an airtight space inside is stamped out in the shape of a strip of paper or a plastic sheet-like base material, and assembles into the housing | casing shape which has space. It can be formed easily. In addition, there is no restriction | limiting in particular about the punching method and an assembly method. It can also be formed by making the main body 11 into a bag shape (not shown) and using a paper or plastic bag that matches the size of the housing 12.

  Thus, the habitat environment of the accommodating part 12 mentioned later accommodated in the main-body part 11 can be improved by making the shape of the main-body part 11 into the bag shape or housing | casing shape which has space. In other words, since it can be sealed from the upper part of the main body to the side surface to form a sealed space, water droplets can be prevented from entering from the outside, and the humidity can be kept moderate, and light rays such as sunlight can be blocked. It is possible to prevent high temperatures due to heat rays, provide a hiding place (sprayer) for spraying chemical pesticides that have a strong influence on natural enemy spider mites, and prevent food damage such as rats and slugs. Such an effect is synergistically increased by being combined with an interval relationship formed by an outer surface of the accommodating portion 12 described later and an inner surface of the main body portion 11.

  The base material constituting the main body 11 has elasticity and flexibility, and is often exposed to rain dew, so it is waterproof and weather resistant, and may be made of a material that can be discarded as general waste. It is preferable (the same applies to the installation unit 13 which is connected to the main unit and will be described later). For example, synthetic paper and paper made of water-repellent-treated paper are preferable because they have a low environmental impact when discarded. Specific examples include milk carton paper, coated cardboard, double-sided PE (polyethylene) film laminated paper, and the like. Moreover, at least 1 type of synthetic resin, metal foil, or a nonwoven fabric chosen from the group which consists of polyester, polyethylene, a polystyrene, and a polyurethane may be sufficient. The thickness is usually 0.01 to 2.0 mm, preferably 0.1 to 0.5 mm.

  As shown in FIG. 1, the main body 11 preferably has a release opening (gap) through which natural enemy insects can come out of the space for activities after the natural enemy insects multiply. The gap is preferably a slight gap through which natural enemy insects can pass, and in consideration of the risk of water entering the inside due to water spraying, a slit-like one located near the bottom of the bottom of the main body It is more preferable that

  Specifically, the main body 11 is preferably in the form of a casing having at least a front surface portion A, a rear surface portion B facing the front surface portion A, a bottom surface portion C, and a release port D that constitute a sealed space. For example, as shown in FIG. 1, the main body 11 has a casing shape, and a sealed space is formed by a sheet-like base material made of paper or plastic whose surface is water-repellent. The space has a front surface portion A, a rear surface portion B facing the front surface portion A, a bottom surface portion C, and a slit-shaped release port D through which natural enemy insects can enter and exit. It is preferable that the container is sealed so that water droplets do not enter from the outside into the sealed space other than the release port.

  More specifically, the main body 11 having the configuration shown in FIG. 1 can be easily formed by assembling the development shown in FIG. 3 as follows. That is, the bottom surface portion C is formed by being defined as the front surface portion A by a crease formed by folding at least one lower end of the base material sheet constituting the front surface portion A, before being folded. The lower end of the base sheet has a first convex arc that is convex downward, and the shape of the fold is symmetrical with respect to the chord of the first subarc arc, and is a convex second convex subarc. The slit-shaped release port D is formed at least at a portion where the bent lower end is in contact with the inner surface of the rear surface portion B.

  More specifically, as shown in the developed view shown in FIG. 3, the main body portion 11 having the structure shown in FIG. A convex first arc shape is formed, and the front surface portion A is connected to both ends of the first arc shape, and is symmetrical to the first arc shape. (E), and the bottom surface portion C is approximately 90 degrees while the lower end of the front surface portion A is in sliding contact with the inner surface of the rear surface portion B with reference to the second arc-shaped fold of the front surface portion. It is formed by bending inward and extends from the second arc-shaped crease to a sliding contact portion between the lower end of the front surface portion A and the inner surface of the rear surface portion B, and is formed in an elliptical shape in a bottom view, Furthermore, the release port D is formed between the lower end of the front surface portion and the inner surface of the rear surface portion.

  As shown in FIG. 5, it is also a preferred embodiment of the present invention that the portion where the bottom portion is provided is configured as follows. In the natural enemy insect protection device shown in FIG. 5, the main body portion 11 is configured by further bending the lower end of the base sheet constituting the rear surface portion B in the device of the form shown in FIG. 1 described above. A bottom surface portion C ′ is formed so as to overlap a bottom surface portion C provided following the front surface portion A. By comprising in this way, the slit-shaped release port D formed along the edge of the position which contact | connects the inner surface of the rear surface part of the bottom face part C is not exposed outside by forming the bottom face part C '. It becomes like this. Therefore, according to the natural enemy insect protection device shown in FIG. 5, for example, when watering a plant, the device is provided via the slit-shaped release port 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 interior.

(Container 12)
The accommodating portion 12 used in the present embodiment is disposed in the space of the main body portion 11. Specifically, as shown in FIG. 2, for example, at least two through holes (one or more openings having a predetermined size) are provided to secure an air passage in which natural enemy insects are accommodated so as to be able to enter and exit. For example, a combination of natural enemy insects and prey mites, or natural enemy insects and prey mites and natural enemies in a 4-8 × 4-8 cm square or rectangular tea bag-like bag. It is preferable that a combination with insects and / or a bait necessary for the growth of bait mites is accommodated. By configuring in this way, it is possible to provide a supplementary feeding field for natural enemy insects, and in addition to the functions of the main body 11 described above, for example, from chemical pesticides that affect the survival of natural enemy insects. An additional shelter can be provided.

  Here, as natural enemy insects, phagocytic mites such as Miyako burdock mites, Swarsky burdock mites, Kukumeri burdock mites can be mentioned as preferred examples. In the present invention, at least bait mites (such as sugar mites, Sayaashi mite, Kenagakonadani, etc.) are used as food that supports the activities of natural enemy insects. More preferably, for example, in addition to bait mites (such as sugar mites, Sayaashi mite, Kenagakonadani, etc.), bran, sugar, etc., serving as bait mites can be used in combination. Note that a moisturizing agent may be added to the accommodating portion 12, but as described above, the moisturizing agent to be used is preferably one that does not generate water droplets.

  More specifically, as the storage unit 12 used in the present invention, for example, about 500 to 2000 bait mites are used for 250 Swarsky cabbage mites, and 3.0 g of bran and 0 sugar are used. .15-0.6g mixed can be mentioned. Alternatively, the trade name “Swarsky Plus” manufactured by Arista Life Sciences may be used.

(In sealed space)
As described above, in the natural enemy insect protection device according to the embodiment of the present invention, the sealed space 14 is formed inside the main body 11 and the above-described accommodating portion 12 is disposed therein. As described above, at that time, it is necessary that the interval formed by the inner surface of the main body 11, the outer surface of the accommodating portion 12, and the inner surface of the main body has a portion of 3.0 mm or less. Preferably, it is preferable to arrange so that a portion having a space as narrow as possible is formed with the space being 2.0 mm or less, and further 1.0 mm or less. This interval can be adjusted when the accommodating portion 12 is inserted into the main body portion 11. This spacing can be measured using calipers, digital calipers or gap gauges.

  In the preferred embodiment of the natural enemy insect protection apparatus of the present invention as described above, as the above-mentioned sustained-release moisture-retaining material, for example, as shown in FIG. It is preferable to accommodate granular super absorbent resin 15. By doing in this way, the humidity in the sealed space 14 can be maintained very easily for 70 days or more for 30 days or more, and further for 80% or more for 30 days or more. In the present invention, not limited to the above-described configuration, for example, a sheet-like superabsorbent resin swollen with water may be disposed in the sealed space 14 or a sheet-like superabsorbent polymer swollen with water. It is also effective to form the resin in a bag shape and place the accommodating portion 12 therein (both not shown).

  As a natural enemy insect protection device according to another embodiment of the present invention, the main body portion has a sealed space inside, and has a release port to the outside of the natural enemy insect, at least inside the main body portion. The bag is formed of a water-retaining material that exhibits gradual moisture-releasing properties with respect to the formed sealed space (not shown), and the storage unit 12 in which natural enemy insects and bait mites are stored in an accessible manner is disposed therein. It may be configured as follows. In this case, as a material constituting the bag-shaped main body, the outer surface is made water-repellent, and the inner bag body forming material is a water-retaining material exhibiting sustained moisture release. Cost. By configuring in this way, the sealed space formed inside the bag body allows natural enemy insects to enter and exit, the water does not enter when sprinkled on the main body, and the humidity is 70% or more Can be maintained for 30 days or more.

  Further, in the natural enemy insect protection device of the present invention, in order to have a configuration having many portions in the sealed space 14 where the distance between the inner surface of the main body 11 and the outer surface of the housing portion 12 is 3.0 mm or less. If necessary, a filling member for filling a gap formed inside the sealed space 14 in which the accommodating portion 12 is disposed can be further disposed. Examples of the filling member include felts, skimmer sheets, hemp root wound sheets, wool, twine, handicraft cotton, and absorbent cotton. These members can be used by being packed in the gap, or can be used by sandwiching the accommodating portion 12. If the size of the filling member used is a sheet like felt, the thickness is about 50 to 200 mm × 50 to 200 mm and the thickness is about 1 to 10 mm. The string or lump like wool or cotton is used. If it is a thing, a magnitude | size can be adjusted suitably so that it may pack in the said clearance gap. When a member that fills such a gap is used, for example, it can serve as a spawning place for prey mites, and it has an excellent effect in maintaining the growth of prey mites and thus improving the settlement of natural enemy insects.

(Installation part 13)
As shown in FIG. 1, the natural enemy insect protection apparatus 10 of the present invention is installed for installation on branches and leaves (not shown) of a crop connected to the main body 11 and to be protected from pests to be installed. It is preferable that the unit 13 is further provided. The installation unit 13 can be directly and simply hung from the branches and leaves to be installed. Depending on the mode of use, for example, it may be installed on the branches and leaves of the crop to be protected from pests without using the installation unit 13. In the natural enemy insect protection device 10 shown in FIGS. 1 to 4, by using an installation portion 13 that is provided integrally with a sheet that forms the rear surface portion B that constitutes the main body portion 11, Sealed so that water droplets do not enter even when water is sprinkled into the sealed space provided in the case. Specifically, the portion (a) which is the margin portion provided after the rear surface portion B constituting the main body portion 11 shown in FIG. 3 is bent inward, and the main body portion 11 is bent to the portion (a). The installation portion 13 and the main body portion of the installation portion 13 provided after the rear surface portion B constituting the main body portion 11 are overlapped and glued with the portion (b) of the inner wall at the side end of the front surface portion A constituting the main body portion 11. 11 is bent to the front surface A side constituting the main body 11 at the position indicated by a broken line at the boundary between the front surface A and the band-like portion (c) shown in FIG. The installation portion 13 is bent again at the position indicated by the broken line so as to overlap the upper end portion (d) of this, and this overlapped portion is fixed with an adhesive or a stapler. By doing so, as shown in FIG. 2, it is possible to form a sealed space in which the upper portion is particularly tightly sealed inside the main body 11. Further, as described above, the production method is extremely simple and practical in this respect.

  For example, as shown in FIG. 1, the installation portion 13 has a substantially quadrangular shape, and except for the upper side of the quadrangular shape, the other three sides penetrate a portion connected to the base material of the main body portion 11. In addition, the left and right side cuts of the other three sides have a symmetric or asymmetrical saw shape, and the three sides are cut leaving the upper side of the quadrangular shape. What is comprised so that the tongue piece which can pinch | interpose an installation object between base materials so that attachment or detachment is possible can be formed.

(Method for manufacturing protection device for natural enemy insects)
When the protection device 10 for natural enemy insects of the present invention has a casing shape, for example, according to a development view shown in FIG. 3, a sheet-like base material made of plastic or paper is punched into a strip shape, and a space is formed. The natural enemy insect protection device 10 can be easily manufactured by assembling it into a housing shape to form the main body 11 and inserting and disposing the housing 12. The same applies to the bag shape. As the product, for example, in the case of the embodiment shown in FIG. 1 or FIG. 5, a sheet-like product in which only the bottom surface portion C is not assembled, and a storage unit 12 in which at least natural enemy insects and bait mites are stored. And a ball-like superabsorbent resin before being swollen with water if necessary. If it does in this way, an operator will simply swell the inside of the main body part 11 with the accommodating part 12 and the swollen water if necessary, and drained the ball-shaped superabsorbent resin from the bottom part C side. Then, after assembling only the bottom surface portion C, a useful natural enemy insect protection device 10 that can achieve the effects of the present invention can be obtained.

  In addition, as another product, instead of the ball-shaped superabsorbent resin, a product in which a bag-shaped water retaining material formed by enclosing water or moisture with a moisture-permeable film is used in a thin shape can be used. As described above, in this case, it is also possible to use a bag-shaped water retaining material attached in advance to the inside of the main body 11. In this way, a useful natural enemy capable of obtaining the effects of the present invention can be obtained by simply inserting the housing portion 12 from the bottom surface portion C side into the main body portion 11 and then assembling only the bottom surface portion C. Insect protection device 10 can be obtained more easily.

  Hereinafter, the natural enemy insect protection device of the present invention will be described more specifically with reference to examples. Note that the present invention is not limited in any way by the following examples.

Example 1
The natural enemy insect protection device 10 shown in FIG. 1 was produced as follows. First, a sheet-like base material made of water-repellent treated paper having a thickness of 0.4 mm was punched into a strip shape, and a sheet-like base material as shown in the development view shown in FIG. 3 before assembly was prepared. . In addition, the dotted line in FIG. 3 has shown the position which arrange | positions the accommodating part 12 which accommodates a natural enemy insect and prey mites in a bag body so that entrance / exit is possible, and the broken line has shown the bending position. The sheet-like base material in the unfolded state prepared above was assembled in the following procedure to obtain the natural enemy insect protection device of this example shown in FIG.

  The portion (a) which is the margin portion provided after the rear surface portion B constituting the main body portion 11 shown in FIG. 3 is bent inward, and the front surface constituting the main body portion 11 is formed at the portion (a). Part (b) of the inner wall at the side end of part A is overlaid and glued. Next, the installation part 13 is placed at the position of the broken line at the boundary between the installation part 13 and the main body part 11 of the installation part 13 provided subsequent to the rear surface part B constituting the main body part 11. 3 is further bent at the position of the broken line so that only the band-shaped portion (c) shown in FIG. 3 overlaps the upper end portion (d) of the front surface portion A. (Refer to FIG. 2) The overlapping portion is fixed with an adhesive or a stapler. In this way, the assembly was performed so that a space was formed inside the main body 11. And after inserting the accommodating part 12 in this space, the bottom part is bent about 90 degree | times toward the rear surface part B side which comprises the main-body part 11 about the part of the broken line (e) shown in FIG. C was formed and assembled into the casing shown in FIG.

  The main body 11 thus formed was 160 mm long × 70 mm wide × maximum depth 20-30 mm. As shown in FIGS. 1 and 2, the formed main body portion 11 is defined by the front surface portion A and a folded fold, and a bottom surface portion C made of a sheet integral with the front surface portion is formed. A slit-shaped release port D is formed at a portion where the arc-shaped end portion of the main body portion 11 is in contact with the rear surface portion B.

  In the accommodating part 12 inserted into the space of the main body part 11, 250 to 300 heads, 1000 parts of Swarsky cabbage mites, bait mites (sugar mites), and bras are placed in a tea bag-shaped bag body having a size of 60 to 70 mm. -2000 heads containing 3.0 g were used. Moreover, when accommodating, the space | interval of the inner surface of the sealed space which comprises the main-body part 11 and the outer surface of the accommodating part 12 is ensured so that it may arrange | position to the accommodating part 12 from the upper part of the main-body part 11. A portion of 3.0 mm or less was formed. In part, it was confirmed that there was a portion of 1.0 mm or less.

  Five protection devices 10 for natural enemy insects produced as described above were suspended from the mango tree branch by the installation unit 13 per tree. By observing the inside of the apparatus, the number of Swarsky red mite (adults, larvae) and the number of eggs and the number of sugar mites (adult larvae) as feed mites observed on the outside of the housing part 12 and inside the body part 11 and The number of eggs was counted. The results are shown in Table 1.

  All numbers in Table 1 are the cumulative numbers of individuals or eggs observed on the 6th, 12th and 19th days after the installation of the natural enemy insect protection device 10, and 5 It is an average value of the protection device 10. It can be seen that sugar mite, which is a prey mite that supports the activity of the Swarsky spider mite, lays eggs in the main body part 11, and the sugar mite that has come out of the storage part 12 is active in the main body part 11 of the protective device 10.

(Example 2)
The casing-like main body 11 of the natural enemy insect protection device 10 shown in FIG. 1 was formed in the same manner as in Example 1. In the present embodiment, the same accommodating portion 12 as that used in the first embodiment is inserted into the sealed space 14 of the main body portion 11 and disposed in the same state as that performed in the first embodiment. A felt (not shown) of 100 mm × width 50 mm × thickness 1 mm) was inserted so as to face the accommodating portion 12. The bottom part C was produced by bending the part (e) about 90 degrees in the same manner as in Example 1.

  One of the produced natural enemy insect protection devices was hung on a branch of a mandarin orange tree by the installation unit 13 per tree. The inside of the apparatus was observed, and the number of Swarsky cabriolet mite individuals (adult larvae) and the number of sugar mite individuals (adult larvae) observed on the outside of the housing part 12 and inside the main body part 11 were counted. The results are shown in Table 2.

  The numbers in Table 2 are the cumulative numbers of individuals observed on the 4th, 10th and 19th days after the installation of the natural enemy insect protection device. Average value.

(Example 3)
The body part 11 of the natural enemy insect protection device 10 is assembled in the same manner as that produced in Example 2, and the same housing as used in Example 1 is housed in the sealed space 14 of the body part 11 in the same manner as in Example 2. The egg-laying part was inserted so as to face the part 12 and the accommodating part 12. In this embodiment, in the sealed space 14 of the main body 11, a highly water-absorbent resin (spherical, about 1 cm in diameter at the time of water absorption) that has been preliminarily absorbed with water and cut off the surface water per protective device. Three pieces were inserted into the bottom of the device (see FIG. 4), and the bottom portion C was formed by bending the portion (e). After that, the natural enemy insect protection device 10 produced as described above was hung on a branch of a mandarin orange tree by the installation portion 13 per tree. The inside of the device was observed, and the number of Swarsky red spider mite individuals (adult larvae) and the number of sugar mite individuals (adult larvae) observed as prey mites were counted on the outside of the housing part 12 and inside the main body part 11. The results are shown in Table 3.

  The numbers in Table 3 are the cumulative numbers of individuals observed on the 4th, 10th, and 19th days after the installation of the natural enemy insect protection device. Average value.

Example 4
The main body 11 of the natural enemy insect protection device 10 was assembled in the same manner as in Example 2. At that time, in the sealed space 14 of the main body 11, a bag in which water is enclosed with the same housing 12 as used in Example 1 and a moisture-permeable film (trade name: moisture-permeable film KFT / Mitsubishi Resin). A bottom water portion C was formed by inserting a water-retaining material and bending the portion (e). The water retaining material used was 8 g in weight including water, and the size was 80 mm in length, 40 mm in width, and the maximum thickness was 5 mm. The thus produced natural enemy insect protection device can be used in the same manner as in Example 3 and exhibits excellent settleability of natural enemy insects.

  As an application example of the present invention, it is effectively used in the management of agricultural crops, particularly in IPM (Integrated Pest Management) centering on natural enemies.

10: natural enemy insect protection device 11: main body part 12: housing part 13: installation part 14: sealed space 15: water-releasing material A: front part B: rear part C, C ': bottom part D: release port

Claims (13)

A device for protecting natural enemy insects that has improved the settlement of natural enemy insects by maintaining the growth of bait mites that are the food of natural enemy insects that are natural enemies of pests,
A bag-like or housing-like main body having a sealed space inside,
A storage section disposed in the sealed space of the main body section, in which the natural enemy insects and the bait mites are stored so as to be able to enter and exit;
An apparatus for protecting natural enemy insects, wherein a distance between the inner surface of the sealed space of the main body and the outer surface of the housing portion facing each other is 3.0 mm or less. A device for protecting natural enemy insects that has improved the settlement of natural enemy insects by maintaining the growth of bait mites that are the food of natural enemy insects that are natural enemies of pests,
A bag-like or housing-like main body having a sealed space inside,
A housing part disposed in the sealed space of the main body part, in which the natural enemy insects and the bait mites are housed so as to be able to enter and exit, and a member made of a sustained moisture-retaining water retaining material,
The sealed space is configured such that the natural enemy insects can enter and exit, the water does not enter when water is sprayed on the main body, and the humidity can be maintained at 70% or more for 30 days or more,
Furthermore, it is comprised so that it may have a part whose space | interval of both in the part which the inner surface of the said main-body part which forms the said sealed space, and the outer surface of the said accommodating part oppose is 3.0 mm or less. A natural enemy insect protection device. A device for protecting natural enemy insects that has improved the settlement of natural enemy insects by maintaining the growth of bait mites that are the food of natural enemy insects that are natural enemies of pests,
A bag-shaped main body formed of a water retaining material that has a sealed space in the interior and has a release port to the outside of the natural enemy insects, and that exhibits a slow moisture-releasing property to at least the internal sealed space;
The storage unit is disposed in the sealed space, and includes a storage unit in which the natural enemy insects and the food mites are stored in a bag body so as to be able to enter and exit,
The sealed space is configured such that the natural enemy insects can enter and exit, the water does not enter when water is sprayed on the main body, and the humidity can be maintained at 70% or more for 30 days or more,
Furthermore, it is comprised so that it may have a part whose space | interval of both in the part which the inner surface of the said main-body part which forms the said sealed space, and the outer surface of the said accommodating part oppose is 3.0 mm or less. A natural enemy insect protection device.   The natural enemy insect protection device according to claim 2 or 3, wherein the sealed space is configured to be maintained at a humidity of 80% or more for 30 days or more.   The protective device for natural enemy insects according to claim 2 or 3, wherein the sustained moisture-retaining water retention material is made of a highly water-absorbent resin.   The natural enemy insect protection device according to claim 2, wherein the housing portion is housed in a bag made of a highly moisture-absorbing resin that gradually releases moisture, and is disposed in the sealed space of the main body portion.   3. The natural enemy insect according to claim 1, wherein the main body portion has a release port through which the natural enemy insect can enter and exit outside at a lower end of the bag-like body, and a bottom surface portion of the body-like body body. Protection device.   The container is necessary for the propagation of the natural enemy insects and / or the food mites in addition to the natural enemy insects and the food mites in the tea bag-like bag body, or the combination of the natural enemy insects and the food mites. The protection apparatus for natural enemy insects according to any one of claims 1 to 7, wherein any combination of baits and baits is accommodated.   The casing-shaped main body portion is formed of a sheet-like base material made of paper or plastic whose surface is water-repellent, and the sealed space is formed opposite to the front surface portion and the front surface portion. A rear surface portion, a bottom surface portion, and a slit-shaped release port through which the natural enemy insect can enter and exit, and water droplets enter the sealed space from the outside other than the slit-shaped release port. The device for protecting natural enemy insects according to claim 1, wherein the device is sealed so as not to be damaged.   The bottom surface portion is formed to be defined as the front surface portion and / or the rear surface portion by a crease formed by bending at least one lower end of the base sheet constituting the front surface portion and / or the rear surface portion. The lower end of the base sheet before being bent is a first subarc arc shape that is convex downward, and the shape of the fold line is symmetrical with respect to the first subarc arc string. It is a convex second underarc shape, and at least the bent lower end has a structure in which the slit-shaped release port is formed in a portion in contact with the inner surface of the front surface portion or the inner surface of the rear surface portion. The natural enemy insect protection device according to claim 9.   The natural enemy insect protection device according to any one of claims 1 to 10, wherein the natural enemy insect is a spider mite, and the bait mite is a mite such as a sugar mite, a Sayaani mite, or a mite.   The natural enemy insect protection device according to any one of claims 1 to 10, wherein a filling member for filling a gap formed therein is further disposed in the sealed space of the main body.   The natural enemy insect protection device according to claim 12, wherein the filling member is at least one selected from the group consisting of felt, skimmer sheet, hemp root wound sheet, wool, twine, handicraft cotton and absorbent cotton.