CN111567484A - Method for suspending rice moth larva container to increase number of wild brown band moth cocoon bee colonies - Google Patents
Method for suspending rice moth larva container to increase number of wild brown band moth cocoon bee colonies Download PDFInfo
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Abstract
The invention discloses a method for increasing the number of wild brown banded moth cocoon bee colonies by suspending rice moth larva containers, which comprises the following steps: (1) a container for singly hanging rice moth larvae; (2) releasing the bracon fuscous artificially, and hanging a container for rice moth larvae; (3) inspecting the brown band moth cocoon bee population; the method for increasing the number of wild brown armyworm cocoon bee colonies by suspending the rice moth larva container mainly adopts the mode of manually suspending the rice moth larva container in the wild, provides wild parasitic hosts, propagation conditions and shelters for the survival of brown armyworm cocoon bees by trapping the brown armyworm cocoon bee in the wild natural environment or artificially releasing the brown armyworm cocoon bee, ensures the establishment of the wild population of the brown armyworm cocoon bee, increases the population individual number and achieves the effect of biologically preventing and controlling pests by the parasitic wasps.
Description
Technical Field
The invention belongs to the field of biotechnology of agriculture and forestry, relates to a method for improving parasitic wasps in natural population through artificial measures, and particularly relates to a method for improving the number of brown banded moth cocoon bee colonies by suspending rice moth larvae in a container in the field.
Background
The palmaceae plant is the second economic plant next to the gramineae, is also an important enrichment means for landscaping trees in southern Hainan province and coastal areas in southern China, and is even more an important enrichment means for hundreds of thousands of planters in industries related to palm plants. Due to the high-temperature, high-humidity and rainy environment of the tropical zone in Hainan, the method is very beneficial to the occurrence and outbreak of various pests, and particularly brings about various problems such as outbreak of external pests along with rapid development of international trade, transportation tourism, e-commerce and the like, so that the risk and uncertainty brought to the palm plant industry and the ecological environment thereof are obviously increased, and meanwhile, serious threats are caused to the production safety and ecological tourism resources of palm plants in south China. The coco pilea is a palmitaceae plant pest which is discovered to invade Hainan of China in 2013 in 8 months, and then the harmfulness of the pest is discovered in turn in Guangdong, Guangxi and the like. The larva eats epidermis tissues of leaves of palmaceae plants, silks and adheres excrement moth-eaten tunnels to the back of the leaves, so that the leaves of the plants are curled and are scorched, the crowns of the plants can be dried and even dead when the leaves are severe, the yield of coconut fruits can be reduced by more than 45 percent, 13.8 to 21 percent of the leaves are damaged, and meanwhile, the leaves of ornamental palm plants such as palm and Chinese fan palm are seriously damaged, and serious economic loss is caused. The red vein agraphyllo suppressalis is an important pest which damages areca, and can be generated and damaged all the year round in the areca planting area in China. The larvae which are hatched at first eat the flower spikes, the flower spikes are eaten by the larvae before the bracts are unfolded, only black flower spike stalks and a large amount of worm excrement and detritus are left, the larvae can eat petals and eat areca nuts in the flowering period and the fruit period, the fruit yield of the areca nuts can be reduced by over 31 percent in a severe region of the red-vein agraphalocrocis nubilalis, and the frequent occurrence and outbreak of the pests seriously threaten the healthy and continuous development of the coconut and areca nut industries in China.
The trunk of the palmaceae plant is straight and long, the fruiting tree is as high as more than ten meters, the operation difficulty of manual pesticide application is high, and the cost is high; secondly, the cocoanut webworm and the red-vein spica borer are mostly hidden in leaves or buds and damaged by boring, the concealment is strong, and the chemical pesticide prevention method of spraying and leaching plants is adopted, so that the pesticide is difficult to directly contact with the worm body, and an effective prevention and control effect is formed; in addition, the chemical pesticide can cause the pests to have drug resistance after long-term use, causes the pests to be rampant repeatedly, kills natural enemies of the pests, pollutes the environment and the like, and also influences the natural ecological environment and the edible safety of the planted fruits. Therefore, according to the classical biological control theory, the method for controlling the cocoanut leaf roller and the red-nervil by using the parasitic wasps which are natural enemies is a feasible method, is the strategic requirement for realizing the current 'reduction and efficiency improvement of chemical fertilizer and pesticide' in China, is beneficial to national energy conservation and emission reduction, meets the requirement for low-carbon economic development, and is one of the subjects of the prior development in the food safety strategy and the modern agricultural development strategy in China.
The Bracon fuscogongrass is a parasitic wasp larva, also called tea diamondback Bracon, belonging to Braconidae Braconidae of Hymenoptera, except reported hosts such as Adoxophynchoides orana, Homona magnanima of tea leaf roller and Adoxophynchoides privatana of Taiwan, we also found that the parasitic wasp has strong tropism to larvae of Cocoid moths and Haematococcus furnacalis in the field of Hainan. The Corcyra cephalonica is a storage pest, generally eating rice, wheat, corn, millet, peanut, sesame and dried fruits, the raising method is simple, and the larvae of the rice moth which is separated from grain crops are difficult to survive, so the eggs, larvae and pupae can be used as feeds for parasitic natural enemies or predatory natural enemy insects, and can be used as intermediate hosts in the process of producing natural enemies and can be widely applied. Under indoor conditions, the rice moth larvae which are easy to feed are used as hosts of the bracon fuscipes, the bracon fuscipes are propagated by feeding a large amount of the rice moth larvae, and then the bracon fuscipes are released to the field, so that the aim of biologically preventing and treating the coco moths and the red-nervous borers is fulfilled, and the method is a feasible method for preventing and treating the palm pests by using parasitic wasps at present. The application effect of biological control of palm pests in tropical regions of China is improved by the operation mode that a large number of indoor propagation expanding cocoons of the brown armyworms are released outdoors by the applicant group, and the application plays a positive role in protecting the planting safety of the palm plant industry.
The applicant finds that a small amount of rice moth larvae remained in the releaser of the bracon fuscous warrior cuvernaeus fly away from the releaser, and are occasionally parasitized by the bracon fuscous warrior cuvernaeus to form a certain number of bracon fuscous warrior groups in practice of releasing the bracon fuscoulis by popularization for a long time. Therefore, the adult brown looper cocoons can search the rice moth larvae as one of the hosts and have the ability to utilize the rice moth larvae to breed the wild natural population by supposition and experimental demonstration.
Disclosure of Invention
The invention aims to provide a method for increasing the number of wild brown cabbage moth cocoon bee colonies by suspending a rice moth larva container, which is mainly characterized in that the wild brown cabbage moth cocoon bee colonies are induced in a natural environment in the field or artificially released by the induction in a manner of manually suspending the rice moth larva container in the field, so that wild parasitic hosts, propagation conditions and shelters are provided for the survival of the wild brown cabbage moth cocoon bee colonies, the establishment of the wild brown cabbage moth cocoon bee colonies is ensured, the population individual number is increased, and the effect of biologically preventing and controlling pests by parasitic wasps is achieved.
In order to achieve the purpose, the technical scheme of the invention is as follows: the method for increasing the number of wild brown banded moth cocoon bee colonies by suspending rice moth larva containers comprises the following steps:
(1) single suspension rice moth larva container: suspending containers of rice moth larvae in a palm forest in which a population of coilia fusca or a palm forest with a good ecological environment is found; hanging 1 rice moth larva every 5-30 meters, opening the container for inspection for 3-7 days, and changing the position of a rice moth larva container if no imago attachment of the coilia fusca exists in the rice moth larva container, so as to ensure that the imago attachment of the coilia fusca exists in each rice moth larva container and parasitize the rice moth larvae; the rice moth larva container contains rice moth larvae or rice moth larvae containing broken grain;
(2) artificially releasing the bracon fuscous and hanging a container for rice moth larvae: in the palm forest where the brown cudweed bee colonies are not found or the ecological environment is poor, adding brown cudweed bee into 1-2 containers containing rice moth larvae or rice moth larvae containing crushed grain, and hanging 3-10 containers containing no brown cudweed bee larva at intervals of 15-30 meters around the rice moth larva containers; opening the inspection within 3-7 days, and if no imago attachment of the braconid moth cocoons exists in a certain container of the rice moth larvae, changing the position of the container of the rice moth larvae; ensuring that the imago of the branchiostoma fusca is attached and parasitizing the rice moth larvae in each container of the rice moth larvae;
the side surface or the bottom surface of the container for the rice moth larvae is provided with a plurality of holes with the diameter of less than or equal to 3mm, the holes are used as the pore passages for the brown banded moth cocoons to come in and go out, and the volume of the container is at least more than half of the rice moth larvae or the medium where the rice moth larvae are located; the rice moth larva container is a relatively closed container, so that rice moth larvae can be prevented from escaping to the outside and being effectively parasitized;
(3) and (3) inspecting the brown band moth cocoon bee colonies: after suspending a container of rice moth larvae in a palm forest, checking the number of the bracon fuscous in the container every 10 days, randomly investigating the parasitized situation of the cocoanut leaf rollers and the red leaf rollers on the palm trees, and simultaneously observing whether the pest situation in the forest land is reduced or not, so as to ensure the number of wild bracon fuscous colonies and achieve the effect of preventing and controlling the palmaceae plant pests, namely the cocoanut leaf rollers and the red leaf rollers.
Preferably, 4-8 containers for the larvae of the rice moths are arranged in each mu of land.
Preferably, the rice moth larvae are selected from middle-aged or large-aged rice moth larvae.
Preferably, the slag grain is a feed which is put into artificial feeding of rice moths, and the waste residue and the feed form a mixed medium after the rice moths are taken by rice moths larvae.
Preferably, the side surface or the bottom surface of the rice moth larva container is provided with a plurality of holes with the diameter of less than or equal to 1.5mm, so that the rice moth larvae in the container cannot escape to the outside and are effectively parasitized.
Preferably, the container for rice moth larvae comprises a box body and a box cover, a partition plate is arranged in the box body and divides the box body into a parasitic cavity and a guide cavity, a plurality of transition holes are formed in the partition plate from top to bottom, the transition holes are communicated with the parasitic cavity and the guide cavity, and a plurality of guide holes communicated with the outside are formed in the side surface or the bottom surface of the guide cavity; the height of the partition board is equal to that of the box body.
Preferably, set up spacing bottom plate on the parasitic intracavity bottom, spacing bottom plate is connected with the baffle bottom, and spacing bottom plate's width matches with the width in parasitic chamber, and spacing bottom plate not only can fixed baffle, prevents the skew, can ensure the leakproofness and the stability of parasitic chamber bottom again.
Preferably, guide chamber side sets up spacing curb plate, and spacing curb plate is connected with the baffle side, and the width of spacing curb plate matches with the width in guide chamber, and spacing curb plate can fixed baffle, prevents the skew.
Preferably, a hanging piece is arranged on the box cover, and the hanging piece can be a hook, a hanging rope and the like, so that the container for the rice moth larvae can be conveniently fixed in the field.
The rice moth larva container can be a finished product box specially manufactured and is used for specially propagating and storing the bracon fusceolatum.
The palm forest with poor ecological environment has many manual management measures, and is formed by applying farmland chemical input products such as chemical fertilizers, pesticides and the like for a long time to obtain the yield of agricultural products.
The method for increasing the wild brown band moth cocoon bee colony number by using the suspension rice moth larva container has the following beneficial effects:
1. according to the method for increasing the number of wild Aphidea anachorea bee colonies by suspending the container for the rice moth larvae, the characteristic that the easily raised rice moth larvae are used as the intermediate hosts of Aphidea anachorea is fully utilized, the Aphidea anachorea bee colonies can be propagated in the wild, the operation process is simple, the step of releasing parasitic wasps in the wild is combined into one, the working time is reduced, and the labor cost is saved.
2. The rice moth larva container provided by the invention is a shelter for the braconid wasps with the brown bands, so that a food source and a growth environment are provided for the braconid wasps with the brown bands, the damage of other artificial control measures such as using an insecticide to the braconid wasps with the brown bands is effectively avoided, and parasitic wasp resources are effectively protected.
3. The rice moth larvae thrown into the method can be accurately quantified by means of weighing and the like, so that the standardization of the implementation method for preventing and controlling the palm plant pests such as the coconut leaf rollers and the red spike moths by the coilia fusca is facilitated, and the quantification, the planning and the intensification of the control of the palm pests by the parasitic wasps are further facilitated by orderly throwing the bee sources of the coilia fusca and the rice moth larvae and comparing the control effects with the control effects of coconuts, betelnuts and the like after being damaged in different degrees.
4. The rice moth larva container is provided with a plurality of holes with the diameter of less than or equal to 3mm at the bottom or the side surface of the guide cavity, so that other insects are prevented from entering the rice moth larva container to damage the growth environment of the rice moth larvae in the container, and the rice moth larvae can be prevented from escaping to the outside (the rice moth larvae and adults have light shading property, and the size of the holes of the guide cavity can limit the rice moth larvae) and can be effectively parasitized; meanwhile, the braconid wasps with brown bands can be normally released from the container and can enter from the outside.
5. The rice moth larva container is provided with the parasitic cavity and the guiding cavity, so that the environmental requirement of parasitic bees before emergence can be met, the harm of ants, earwigs and other natural insects to the parasitic bees can be effectively prevented, and the invasion of dew or rainwater in the field or the field can be prevented.
6. The rice moth larva container is internally provided with the detachable partition plate, and the partition plate is also provided with the limiting bottom plate and the limiting side plate, so that the partition plate can be effectively fixed in the box body, and meanwhile, the limiting bottom plate can better stabilize or seal the parasitic cavity.
Drawings
FIG. 1 is a schematic structural view of a container for rice moth larvae (a guide hole is arranged on the side surface of a guide chamber) in the invention;
FIG. 2 is a schematic structural view of the partition board, the limiting side board and the limiting bottom board in FIG. 1;
FIG. 3 is a schematic view showing the structure of a container for rice moth larvae (guide holes are formed in the bottom surface of the guide chamber)
FIG. 4 is a schematic structural view of the case body and the case cover after being combined;
in the figure: 1. a box body; 2. a partition plate; 3. a limiting side plate; 4. a guide hole; 5. a limiting bottom plate; 6. a guide hole; 7. a box cover; 8. a suspension member.
Detailed Description
In order to explain the technical content and the structural characteristics of the method for suspending the rice moth larva container to increase the number of wild brown banded moth cocoon bee colonies, the following embodiment is combined with the accompanying drawings for further explanation.
EXAMPLE one (Single suspension container for rice moth larva)
In 2018, in 5 months, in 5 teams of Dazhenxiang academy of Olympic science and technology, Hainan province, a planting area containing Dawang palm and coconut forest is selected, the area is seriously damaged by coco moths, but the current ecological environment is better, and chemical pesticides such as insecticides and herbicides are not used. At 3 months of investigation, a small number of coco webworm larvae were found to be parasitized by bracon fusca. The method of hanging the rice moth larva containers singly is adopted, and the rice moth larva containers are hung every 20 meters in the palm forest, and 4 containers are hung in total. As shown in fig. 2, 3 and 4, the container for rice moth larvae comprises a box body 1 and a box cover 7, and the connection mode of the box body 1 and the box cover 7 can adopt various conventional modes. The box cover 7 is provided with a suspension member 8, and the suspension member 8 is a suspension rope, so that the container can be conveniently fixed in the field. Set up baffle 2 in box body 1, baffle 2 separates into parasitic chamber and guide chamber in with box body 1, and the volume in parasitic chamber is greater than the volume in guide chamber. The height of baffle 2 equals the height of box body 1, and baffle 2 sets up a plurality of from last to excessively hole 6 down, and excessive hole 6 communicates with each other parasitic chamber and guide chamber, and the side of guide chamber sets up 10 bullports 4, and bullport 4 can communicate with each other outside the box body. Set up limit bottom plate 5 on the parasitic intracavity bottom, limit bottom plate 5 is connected with 2 bottoms of baffle, and limit bottom plate 5's width matches with the width in parasitic chamber, and limit bottom plate 5 not only can fixed partition 2, prevents to the skew in parasitic chamber, improves the leakproofness and the stability of parasitic chamber bottom. Guide chamber side sets up spacing curb plate 3, and spacing curb plate 3 is connected with 2 sides of baffle, and the width of spacing curb plate 3 matches with the width in guide chamber, and spacing curb plate 3 can fixed partition 2, prevents to guide the chamber skew. The partition plate 2, the limiting side plate 3 and the limiting bottom plate 5 can be integrally formed. The length multiplied by the width multiplied by the height of the rice moth larva container is 17 multiplied by 12cm, the parasitic cavity contains 120-145 g of rice moth middle and old age larvae and feed media thereof, the total weight of the rice moth larvae is 15-28 g, 10 holes are formed in the side surface, and the diameter of each hole is about 2 mm.
Vaseline is coated on the suspension rope of the container for preventing other insects such as ants from entering the container. After 3 days and every 2 days, the container is opened for inspection, and whether each container of the rice moth larvae is attached by the imago of the bracon fusceella, and whether the rice moth larvae are parasitized and die or not is observed. If no imago attachment of the coilia fuscata is found in a container of the rice moth larvae after 7 days, the container of the rice moth larvae is replaced (adjusted to the sunny place according to the wind direction). Meanwhile, leaves with the release areas damaged by the coco leaf rollers are randomly selected every 5 days, and whether the coco leaf roller larvae on the leaves are parasitized by the coilia fusca or not is observed. And observing whether the cocoanut moth larvae are parasitized by the bracon fuscous in the same way in another area which is far away from the container and is not hung with the containers of the rice moth larvae.
TABLE 1 comparison of the number of adult Chouioia cunea Yang, the rate of parasitizing Chouioia cunea Yang, and the rate of parasitizing Chouia cunea Yang after suspending the Chouia cunea larva container singly
As can be seen from table 1: after the rice moth larva containers are singly hung in the palm forest, the number of imagoes of the brown tape moth cocoons, the parasitism rate of the rice moth larvae and the death rate of the rice moth larvae in the 4 rice moth larva containers are in a stable rising trend on the whole, the imagoes of the brown tape moth cocoons appear from the 6 th day, each box contains 0.5 head, 19.8 heads are contained when the imagoes of the brown tape moth cocoons appear when the imagoes of the brown tape moth cocoons rise to the 30 th day, the parasitism rate of the rice moth larvae in the containers is 1.75 percent when the imagoes of the rice moth larvae appear from the 9 th day, the imagoes of the rice moth larvae rise to the 30 th day 97.5 percent when the imagoes. These results show that after suspending the container of the rice moth larvae, the adult brown banded moth cocoons in the palm forest can quickly find and parasitize the rice moth larvae, and the population number of the brown banded moth cocoons in the field population is increased. In addition, the investigation on the parasitism rate of the coconut tissue moth larvae shows that the parasitism rate of the coconut tissue moth larvae in the treatment area on the 18 th day, the 24 th day and the 30 th day is respectively 12.25 percent, 10 percent and 16.67 percent, which are all 0 percent and are significantly higher than the parasitism rate of the coconut tissue moth larvae in the control area. The invention shows that the container for the rice moth larvae is singly hung in the palm forest, the number of wild brown banded moth cocoon bee colonies can be obviously increased, and the biological control effect on the palm pest coconut moth is obvious.
Example two (artificially released Chouioia cunea Chouioia, and suspended with rice moth larva Container)
In the area of township, delirium, hainan province, a person in the area of 3 months in 2020, a planting area containing coco forest and royal palm is selected, the area is seriously damaged by the coco moth, and chemical pesticides such as pesticides are used for treatment before and after 5 months in 2019. In the investigation of 1 month in 2020, the coco moths are found to be parasitized by the bracon fuscous, so that the bracon fuscous are manually released, and containers of the rice moth larvae are hung every 15 meters in the palm forest by a method of hanging the containers of the rice moth larvae, and 4 containers are hung in total. As shown in fig. 1, 2 and 3, the container for rice moth larvae in the present embodiment is different from embodiment 1 in that 10 guide holes 4 are provided in the bottom surface of the guide chamber, and the guide holes 4 are communicated with the outside of the cartridge body.
The length multiplied by the width multiplied by the height of the rice moth larva container is 17 multiplied by 12cm, the parasitic cavity contains 120-145 g of rice moth middle and old age larvae and feed media thereof, and the total weight of the rice moth larvae is 15-28 g. The bottom surface of the guide cavity of the rice moth larva container is provided with 10 holes with the diameter of about 1.5 mm. In the parasitic cavities of 1 container, not only the rice moth middle and old age larvae and the feed thereof are contained, but also 50 adult braconid moth braconid bees are contained as the insect source for artificially releasing the braconid moth braconid bees. Around this container containing the insect source, 3 containers of rice moth larvae without the bracon fusceella were hung every 15 meters. A total of 8 containers for the larvae of rice moth are hung, and vaseline is coated on the hanging rope of each container to prevent other insects such as ants from entering the containers. And opening the inspection after 3 days and every 2 days, and observing whether the container of the rice moth larvae is attached by the imago of the bracon fusceella, whether the rice moth larvae are parasitized and whether the rice moth larvae die. And simultaneously, randomly selecting leaves with the released areas damaged by the coco leaf rollers every 5-6 days, and observing whether the coco leaf roller larvae on the leaves are parasitized by the bracon fusceolatum. And observing whether the cocoanut moth larvae are parasitized by the bracon fuscous in the same way in another area which is far away from the container and is not hung with the containers of the rice moth larvae.
TABLE 2 comparison of the number of adult wasps, the rate of parasitism of rice moth and the rate of parasitism of coconut leaf moth after releasing the bracon fuscous artificially and suspending the container of rice moth larvae
As can be seen from table 2: according to the method, the branchionus fuscous is manually released in a palm forest, and containers of rice moth larvae are hung, so that the number of the branchionus fuscous adult bees in each container is in a stable rising trend on the whole, the later small-amplitude descending trend is realized, the number of the branchionus fuscous adult bees in each container is 2.3 in each box from the 3 rd day, the number of the branchionus fuscous adult bees in each box is 25.5 in each box when the branchionus fuscous adult bees rise to the 24 th day, and the number of the branchionus. The parasitism rate and the death rate of rice moth larvae are in a stable rising trend on the whole, the parasitism rate of the rice moth larvae in a container is 9 percent from the 9 th day and rapidly rises to 100 percent from the 24 th day, and the death rate of the rice moth larvae is also rapidly increased to 100 percent from 4.5 percent of the 9 th day and rapidly rises to 100 percent from the 24 th day. These results show that after suspending the container of the rice moth larvae, the adult brown looper cocoons can quickly find and parasitize the rice moth larvae, and the population number of the brown looper cocoons in the field population is increased. In addition, the investigation on the parasitism rate of the coconut tissue moth larvae shows that the parasitism rate of the coconut tissue moth larvae in the treatment areas on the 6 th day, the 12 th day, the 18 th day, the 24 th day and the 30 th day is respectively 12.25%, 22.2%, 30%, 18.19% and 30.78%, which are obviously higher than that of the coconut tissue moth larvae in the control area, and the parasitism rates are all 0. The method shows that the wild branchilla fusca swarm population number can be remarkably increased by artificially releasing branchilla fusca cocoons in the palm forest and hanging the rice moth larva container, and the method has remarkable biological control effect on the palm pest coco moth.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (9)
1. A method for suspending a rice moth larva container to increase the number of wild brown banded moth cocoon bee colonies is characterized by comprising the following steps:
(1) single suspension rice moth larva container: suspending containers of rice moth larvae in a palm forest in which a population of coilia fusca or a palm forest with a good ecological environment is found; hanging 1 rice moth larva every 5-30 meters, opening for 3-7 days for inspection, and changing the position of a rice moth larva container if no braconid moth imago attachment exists in the rice moth larva container; the rice moth larva container contains rice moth larvae or rice moth larvae containing broken grain;
(2) artificially releasing the bracon fuscous and hanging a container for rice moth larvae: in the palm forest where the brown cudweed bee colonies are not found or the ecological environment is poor, adding brown cudweed bee into 1-2 containers containing rice moth larvae or rice moth larvae containing crushed grain, and hanging 3-10 containers containing no brown cudweed bee larva at intervals of 15-30 meters around the rice moth larva containers; opening the inspection within 3-7 days, and if no imago attachment of the braconid moth cocoons exists in a certain container of the rice moth larvae, changing the position of the container of the rice moth larvae;
the side surface or the bottom surface of the container for the rice moth larvae is provided with a plurality of holes with the diameter of less than or equal to 3mm, the holes are used as the pore passages for the brown banded moth cocoons to come in and go out, and the volume of the container is at least more than half of the rice moth larvae or the medium where the rice moth larvae are located;
(3) and (3) inspecting the brown band moth cocoon bee colonies: after suspending a container of rice moth larvae in a palm forest, checking the number of the bracon fusceella in the container every 10 days, randomly investigating the parasitized situation of the cocoanut moths and the red-vein agraphyllus furnacalis on the palm trees, and simultaneously observing whether the damage in the forest land is reduced or not.
2. The method for suspending rice moth larvae container to increase the number of wild bracon fusceolata swarm according to claim 1, wherein the method comprises the following steps: 4-8 containers for rice moth larvae are arranged in each mu of land.
3. The method for suspending rice moth larvae container to increase the number of wild bracon fusceolata swarm according to claim 1, wherein the method comprises the following steps: the rice moth larvae are selected from middle-aged or old rice moth larvae.
4. The method for suspending rice moth larvae container to increase the number of wild bracon fusceolata swarm according to claim 1, wherein the method comprises the following steps: the residue grain is feed for artificially feeding rice moth, and the residue and feed form a mixed medium after the rice moth larvae feed.
5. The method for suspending rice moth larvae container to increase the number of wild bracon fusceolata swarm according to claim 1, wherein the method comprises the following steps: the side surface or the bottom surface of the rice moth larva container is provided with a plurality of holes with the diameter less than or equal to 1.5 mm.
6. The method for suspending rice moth larvae container to increase the number of wild bracon fusceolata swarm according to claim 1, wherein the method comprises the following steps: the rice moth larva container comprises a box body and a box cover, wherein a partition plate is arranged in the box body and divides the box body into a parasitic cavity and a guide cavity; the height of the partition board is equal to that of the box body.
7. The method for suspending rice moth larvae container to increase the number of wild Cerrena fusca cocoon colonies as claimed in claim 6, wherein: and a limiting bottom plate is arranged at the bottom in the parasitic cavity and connected with the bottom of the partition plate, and the width of the limiting bottom plate is matched with that of the parasitic cavity.
8. The method for suspending rice moth larvae container to increase the number of wild Cerrena fusca cocoon colonies as claimed in claim 6, wherein: the side surface of the guide cavity is provided with a limiting side plate, the limiting side plate is connected with the side surface of the partition plate, and the width of the limiting side plate is matched with that of the guide cavity.
9. The method for suspending rice moth larvae container to increase the number of wild Cerrena fusca cocoon colonies as claimed in claim 6, wherein: a hanging piece is arranged on the box cover.
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| PCT/CN2020/121003 WO2021238021A1 (en) | 2020-05-26 | 2020-10-15 | Method for increasing population quantity of wild bracon adoxophyesi mimanikawa by means of suspending corcyra cephalonica larva container |
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