Application of cymbidium multiflorum and cymbidium meyenii as winter hosts of rhus chinensis autumn migrant aphids and specific method

Abstract

The invention belongs to the technical field of forestry characteristic industry, and particularly relates to an application and a specific method of cymbidium multipleatum and hypsidium meyenii as winter hosts of rhus chinensis horngall autumn migrant aphids, and the specific method comprises the following steps: S1, selecting winter host moss seeds; s2, winter host moss is planted, wherein the winter host moss is cymbidium multipleatum or griseolus griseolus; s3, migratory flying of the autumn migrant aphids of the horned beetles: selecting large-crack horned beetles as seed beetles, putting the seed beetles into a plastic basket, putting the basket beside moss, and enabling the autumn migrant aphids of the horned beetles to naturally fly onto the moss for overwintering; and S4, collecting the myzus persicae overwintering if the myzus persicae on the moss are observed to be emerged into spring migrant myzus persicae in the middle of March of the next year, and then moving all moss blocks into a myzus persicae collecting greenhouse to collect the spring migrant myzus persicae in a centralized manner. Compared with the prior art, the method has the advantages that the Rhus chinensis horngall autumn migrant aphids are nursed by selecting the Myricum multiflorum or the Hypsidium meyenii, and the technical problem that the yield of the horngall is limited due to the fact that the Rhus chinensis horngall autumn migrant aphids depend on the Myricum sibiricum as the winter host moss of the Rhus chinensis horngall autumn migrant aphids

Description

Technical Field

[0001] The present invention belongs to the technical field of forestry characteristic industries, and particularly relates to the application and specific methods of Brachythecium buchananii and Hypnum callichroum as the winter hosts of Schlechtendalia chinensis autumn migrants. Background Art

[0002] Chinese gallnuts play an extremely important role in forestry characteristic industries. Firstly, the market demand is large and the application space is wide. The main products produced by processing Chinese gallnuts are tannic acid, gallic acid, pyrogallic acid, and gallic acid esters, which are widely used in industries such as medicine, aviation, petroleum, metallurgy, national defense, culture and education, light industry, food, and IT. The market demand is increasing day by day. In particular, pyrogallic acid, as the main raw material of photoresist, is a key material for the development of the global chip industry. In the livestock and aquaculture markets, due to the gradual reduction in the use of chemical antibiotics, plant antibiotics are needed to reduce the dependence on chemical antibiotics. In recent years, research has shown that Chinese gallnuts are excellent antibiotic-free feed additives;

[0003] By collecting various mosses in the wild and observing the migration of aphids, it was observed that Schlechtendalia chinensis autumn migrants flew to Plagiomnium maximoviczii, and then it was observed that wax balls were formed. Plagiomnium maximoviczii has been used as the winter host of Schlechtendalia chinensis autumn migrants until now and is widely used in the artificial cultivation of Chinese gallnuts. There is no new technology indicating that there are other winter host mosses for Schlechtendalia chinensis aphids besides Plagiomnium maximoviczii.

[0004] In the process of artificially cultivating Chinese gallnuts, it is usually necessary to plant a large number of Plagiomnium maximoviczii. However, the growth environment of Plagiomnium maximoviczii is completely different from that of Rhus chinensis var. roxburghii, the host plant of Chinese gallnuts. Plagiomnium maximoviczii prefers shade and grows on the stones in small arbor forests or in the forest with about 30% scattered light in cypress forests. It has high requirements for humidity and light. The humidity must be about 75% for a long time, and the light is mainly scattered light. While Rhus chinensis var. roxburghii is the only primary host plant for Schlechtendalia chinensis aphids and belongs to pioneer tree species. It likes light and mostly grows in abandoned fields or small shrub forests. The difference in their production environments determines that Rhus chinensis var. roxburghii and Plagiomnium maximoviczii cannot be cultivated in large quantities together. Therefore, Plagiomnium maximoviczii may not be the optimal winter host moss for Schlechtendalia chinensis autumn migrants on Rhus chinensis var. roxburghii;

[0005] At the same time, in recent years, with the large-scale promotion of the Chinese gallnut industry, the wild resources of the winter host "Plagiomnium maximoviczii" have been exhausted, and the collection area of moss species has been gradually limited. It is difficult to artificially propagate the existing excellent winter host "Plagiomnium maximoviczii" mainly because its growth environment is special and extremely demanding on suitable growth temperature, humidity, light, and surrounding environmental conditions. Many growers cannot master the moss propagation technology well. Poorly growing moss will result in poor parasitism of autumn migrants, and the harvest of spring migrants the following year will be poor, which has a great impact on the large-scale development of the Chinese gallnut industry. Summary of the Invention

[0006] The present invention aims to provide the application of Brachythecium buchananii and Bryum bicolor as the winter host mosses of Schlechtendalia chinensis autumn migrant aphids and the specific methods, mainly to solve the technical problem that the prior art relies on Plagiomnium maximoviczii as the winter host moss of Schlechtendalia chinensis autumn migrant aphids, while Plagiomnium maximoviczii can neither grow well naturally nor be cultivated artificially to adapt to the gallnut cultivation process, resulting in limited gallnut yield.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] A conservation method for Schlechtendalia chinensis autumn migrant aphids includes the following steps:

[0009] S1: Selecting the winter host moss;

[0010] S2: Planting the winter host moss, and the winter host moss is Brachythecium buchananii or Bryum bicolor;

[0011] S3: Migration of Schlechtendalia chinensis autumn migrant aphids: Selecting large-cracked gallnuts as seed galls, putting the gall seeds into a plastic basket and placing the basket beside the moss, allowing the Schlechtendalia chinensis autumn migrant aphids to fly to the moss naturally to overwinter;

[0012] S4: Collecting the overwintering nymphs of Schlechtendalia chinensis: In mid-March of the next year, when it is observed that there are nymphs on the moss emerging as spring migrant aphids, all the moss blocks can be moved to the aphid collection greenhouse to collect spring migrant aphids centrally.

[0013] Preferably, in the step S1, the following steps are taken to screen the winter host moss of Schlechtendalia chinensis aphids:

[0014] S11: Selecting several forest lands with wild Rhus chinensis and bearing gallnuts to observe the migration situation of Schlechtendalia chinensis autumn migrant aphids;

[0015] S12: Collecting moss samples from the observed forest lands and detecting the number of parasitic wax balls of Schlechtendalia chinensis autumn migrant aphids on each moss sample, and screening the mosses with parasitic wax balls of Schlechtendalia chinensis autumn migrant aphids as the tentative winter host mosses of Schlechtendalia chinensis autumn migrant aphids;

[0016] S13: Collecting spring migrant aphids on the winter host moss of Schlechtendalia chinensis aphids in mid-April to mid-May, and hanging the collected spring migrant aphids on 5 Rhus chinensis trees about 4-5 years old that have not borne gallnuts for many years. 2 bags of Schlechtendalia chinensis aphids are hung on each tree, and each bag contains about 30 spring migrant aphids. If it is observed that there are young galls formed on each tree in mid-June, then the moss species tentatively determined in the step S12 is determined as the winter host moss of Schlechtendalia chinensis autumn migrant aphids.

[0017] Preferably, the method for planting the winter host moss in the step S2 is as follows:

[0018] S21: Collecting the winter host moss seeds, selecting impurities and other miscellaneous mosses in the moss seeds, and keeping the purity of the moss seeds above 97%;

[0019] S22: Select land that is convenient for transportation, has convenient water sources, receives about 6 - 7 hours of sunlight in summer, and where the sun rises in the east and sets in the west. Level the land, sterilize it with carbendazim and form ridges. Add water to the soil and stir it into a thin mud in a bucket. Cut the geotextile into 1 - square - meter pieces and lay them flat on the ridges. Pour the muddy soil onto the surface of the geotextile with a ladle and spread it evenly. Sow the moss in step S21, shredded evenly at 1 catty per square meter, on the surface of the geotextile. After sowing, spray a small amount of water on the moss with a sprayer, insert arch bars and cover with a shade net, and wait for the moss seeds to grow rhizoids and attach to the geotextile.

[0020] Preferably, in step S3, about 4 - 5 autumn - migrating aphids should be maintained per square centimeter. If there are not enough, artificial collection and supplementation are required.

[0021] Preferably, in step S22, the shading rate of the shade net is 75%; the geotextile is 250 grams per square meter; the arch bars are fiberglass with a thickness of 5 mm and a length of 2 m; the carbendazim is a 50% wettable powder; the soil is the soil below 50 cm from the ground surface.

[0022] Preferably, in step S3, if no tender branches and leaves grow within 15 days or no new moss rhizoids grow on the geotextile, the moss nursery can be sprayed with a thorough water - retaining spray, and field management should be carried out well.

[0023] Preferably, in step S3, after inoculating the autumn - migrating aphids, pay attention to the dry - wet degree of the moss blocks within half a month, and keep the humidity of the moss blocks at 70% - 90%.

[0024] Application of Brachythecium glaucellum as the winter host of Schlechtendalia chinensis autumn - migrating aphids.

[0025] Application of Brachythecium salebrosum as the winter host of Schlechtendalia chinensis autumn - migrating aphids.

[0026] Application of Brachythecium salebrosum as the winter host of Schlechtendalia chinensis autumn - migrating aphids to increase the yield of Chinese gallnuts.

[0027] Application of Brachythecium glaucellum as the winter host of Schlechtendalia chinensis autumn - migrating aphids to increase the yield of Chinese gallnuts.

[0028] Beneficial effects:

[0029] 1. Compared with the side-branch creeping lantern moss used in traditional crafts, multi-fold green moss or beautiful gray moss are easier to plant and collect, and have low requirements for light and humidity. They are easier to plant than side-branch creeping lantern moss. Using multi-fold green moss or beautiful gray moss as the winter host of the Rhus chinensis horn-shaped autumn migratory aphid has overturned the traditional technology of only using side-branch creeping lantern moss to conserve the Rhus chinensis horn-shaped autumn migratory aphid, and ended the history that it is not suitable to artificially plant large areas of moss under the horn-shaped forest to prevent wild natural migration. Tens of millions of acres of wild salt bran trees in the country can be planted with moss under the forest after technical transformation, providing a new conservation idea for the Rhus chinensis horn-shaped autumn migratory aphid. And because multi-fold green moss and beautiful gray moss are easier to cultivate on a large scale, the yield of gallnuts is indirectly increased, and the large-scale development of the gallnut industry is promoted. It solves the technical problem that the existing technology relies on the side-branched creeping lantern moss as the winter host moss of the autumn-migrating aphid of Rhus chinensis, and the side-branched creeping lantern moss cannot adapt well to the gallnut cultivation process whether it grows naturally or is artificially cultivated, resulting in limited gallnut production.

[0030] 2. It is a moss species found in the wild that naturally associates with Rhus chinensis. It is more suitable for the parasitism of Rhus chinensis aphids, improves the survival rate of Rhus chinensis aphids, and is a better winter host moss for Rhus chinensis aphids. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] The following describes an embodiment of the present invention based on its overall structure.

[0034] Embodiment 1:

[0035] The application of multi-fold moss and beautiful gray moss as winter hosts of Rhus chinensis hornbeam aphid and the specific method thereof include a conservation method of Rhus chinensis hornbeam aphid, and the steps of the conservation method are as follows:

[0036] S1: Selection of winter host mosses:

[0037] S11: The Zunyi Chinese Gallnut Cultivation Professional Cooperative specifically selected 2 plots of about 500 square meters each in Huangcun Group, Zhongnan Village, Songlin Town, Huichuan District, Zunyi City and Qilianshan Group, Xintu Village, Leshan Town, Bozhou District, Zunyi City, where there are wild Rhus chinensis and gallnut-bearing forests, to observe the migration of autumn migrating aphids on Rhus chinensis and the search for drought-resistant winter host mosses. After nearly 3 years (2022 - 2024) of tracking and observing the natural migration of autumn migrating aphids on wild Rhus chinensis gallnuts in the wild;

[0038] S12: Analyze the mosses in the forest land. 9 species of moss samples (Brachythecium buchananii, Eurohypnum leptothallum, Hypnum plumaeforme, Thuidium cymbifolium, Physcomitrium sphaericum, Entodon luridus, Fissidens nobilis, Thamnobryum alopecurum, Rhodobryum giganteum) were collected in the forest land. Finally, aphid parasitic wax balls of autumn migrating aphids were found only on two kinds of mosses, which are Brachythecium buchananii and Eurohypnum leptothallum;

[0039] S13: In mid-March 2023, collect spring migrating aphids from mosses with parasitic wax balls in 4 sample plots. In mid-April 2023, on the mountain top of Dapo in Baiguo Group, Zhongnan Village, Huichuan District, Zunyi City, hang the collected spring migrating aphids on 5 about 4 - 5-year-old Rhus chinensis trees that have not borne galls for many years. Hang 2 bags of gallnut aphids on each tree, and each bag contains about 30 spring migrating aphids. In mid-June, it was observed that each tree had formed young galls. The tree with the most had 26 young galls, and the tree with the least had 14 young galls. It was determined that Brachythecium buchananii (Latin name: Brachythecium buchananii) and Eurohypnum leptothallum (Latin name: Eurohypnum leptothallum) are the winter host mosses of gallnut aphids.

[0040] S2: Plant winter host mosses:

[0041] Concentrated planting and management are carried out in the moss base of the Zunyi Chinese Gallnut Cultivation Professional Cooperative in Zhongnan Village, Songlin Town, Huichuan District, Zunyi City, which is convenient for observing the parasitic density of aphids on different mosses. The planting method is as follows:

[0042] S21: Collect 20 catties of Brachythecium buchananii moss seeds, that is, select the impurities and other miscellaneous mosses in the moss seeds, and keep the purity of the moss seeds above 97%;

[0043] S22: Select a 120-square-meter land that is convenient for transportation, has convenient water sources, receives about 6 - 7 hours of sunlight in summer, and faces east and west. Level the land, sterilize it with carbendazim and form ridges. The ridge width is 1 meter and the height is 0.2 meter. A backbone should be formed in the middle of the ridge, about 8 - 10 centimeters higher than the ridge edge, which is conducive to rainwater drainage;

[0044] Purchase a 75% shading rate shading net, 2 meters wide and 100 meters long in one circle, a 1-meter-wide and 50-meter-long military green geotextile with a weight of 250 grams per square meter in one circle, 60 fiberglass arches with a thickness of 5 millimeters and a length of 2 meters, and 100 grams of 50% wettable powder of GuoGuang carbendazim, for later use;

[0045] Then, select the soil below 50 cm from the ground surface, add water to the soil and stir it into a thin mud in a bucket. Cut the geotextile into 1-square-meter pieces and lay them flat on the ridges. Sprinkle the thin mud on the surface of the geotextile with a ladle and spread it evenly. Sow the moss in Step S21 evenly on the surface of the geotextile at a rate of 1 catty per square meter. After sowing, spray a small amount of water on the moss with a sprayer, insert arch bars and cover with a shading net, and wait for the moss seeds to grow false roots and attach to the geotextile.

[0046] If no tender branches and leaves grow within 15 days or no new moss false roots grow on the geotextile, the moss nursery can be sprayed with a thorough watering to keep it moist.

[0047] Meanwhile, before releasing the autumn migrating aphids for inoculation, regularly check the growth of the moss, prevent the moss from growing mold due to excessive rain, and remove weeds in a timely manner every two months according to the growth of the weeds.

[0048] S3: Migration of the autumn migrating aphids of Rhus chinensis var. roxburghii: In early October, select 60 catties of large and cracked Rhus chinensis var. roxburghii fruits as seed galls, prepare 60 small plastic baskets, evenly load the 60 catties of galls into the baskets and place them beside the moss, allowing the autumn migrating aphids of Rhus chinensis var. roxburghii to naturally fly onto the moss for overwintering; it is necessary to maintain about 4 - 5 autumn migrating aphids per square centimeter. If there are not enough, artificial collection and supplementation are required.

[0049] After inoculating the autumn migrating aphids, pay attention to the dryness and humidity of the moss blocks within half a month, and keep the humidity at about 80%. If it rains, a film should be covered on the shading net to prevent the rain from affecting the production of nymphs by the autumn migrating aphids.

[0050] S4: Collection of overwintering nymphs of Rhus chinensis var. roxburghii: In mid-March of the following year, when it is observed that the nymphs on the moss have molted into spring migrating aphids, all the moss blocks can be moved to the aphid collection greenhouse to collect the spring migrating aphids centrally.

[0051] Example 2:

[0052] The difference from Example 1 is that the moss species used in Step S21 is Eurhynchium pulchellum.

[0053] Comparative Example 1:

[0054] The difference from Example 1 is that Comparative Example 1 includes Steps S2, S3, and S4. Among them, the moss species used in Step S21 is Plagiomnium maximoviczii.

[0055] Experimental Example 1:

[0056] Referring to the conservation methods of the autumn migrating aphids of Rhus chinensis var. roxburghii described in Examples 1 and 2 and Comparative Example 1, the growth of the three overwintering hosts of Rhus chinensis var. roxburghii from May 2024 to the end of September 2024 is compared as follows:

[0057] 1. About 10 days after planting the Brachythecium buchananii, tender branches and leaves start to emerge. After 20 days, the stolons grow slowly in all directions. It takes about 25 days for the rhizoids to grow and attach to the geotextile. By the end of June, the moss coverage reaches 45%. By the end of July, the moss coverage reaches 65%. By the end of August, the moss coverage reaches 80%. By the end of September, the moss coverage reaches over 95%.

[0058] 2. About 16 days after planting the Eurhynchium pulchellum, tender branches and leaves start to emerge. After 30 days, the stolons grow slowly in all directions. It takes about 35 days for the rhizoids to grow and attach to the geotextile. By the end of June, the moss coverage reaches 40%. By the end of July, the moss coverage reaches 55%. By the end of August, the moss coverage reaches 70%. By the end of September, the moss coverage reaches about 90%.

[0059] 3. About 25 days after planting the Plagiomnium maximoviczii, tender branches and leaves start to emerge. After 40 days, the stolons grow slowly in all directions. It takes about 50 days for the rhizoids to grow and attach to the geotextile. By the end of June, the moss coverage reaches 25%. By the end of July, the moss coverage reaches 35%. By the end of August, the moss coverage reaches 40%. By the end of September, the moss coverage reaches about 55%.

[0060] According to the data in Experimental Example 1, under the same planting environment and planting method, the growth cycle and moss growth coverage rate of Plagiomnium maximoviczii are significantly lower than those of Brachythecium buchananii and Eurhynchium pulchellum. Its environmental adaptability is weaker and the planting difficulty is greater.

[0061] Experimental Example 2:

[0062] Referring to the conservation methods of Schlechtendalia chinensis autumn migrants described in Examples 1, 2 and Comparative Example 1, the observation data of the density of Schlechtendalia chinensis nymphs parasitizing wax balls from November 2024 to March 2025 are as follows, with the values rounded to one decimal place:

[0063] In the middle of the month following the release of Schlechtendalia chinensis autumn migrants, 5 points are sampled per square meter of moss, with 1 square centimeter sampled from each of the four corners and the center. The number of wax balls observed under the microscope is as follows:

[0064] 1. Brachythecium buchananii: 2.8 heads per square centimeter in mid-November, 2.6 heads in mid-December, 2.2 heads in mid-January of the following year, 2.1 heads in mid-February, and 1.95 heads in mid-March.

[0065] 2. Eurhynchium pulchellum: 2.4 heads per square centimeter in mid-November, 2.1 heads in mid-December, 2 heads in mid-January of the following year, 1.8 heads in mid-February, and 1.8 heads in mid-March.

[0066] 3. Plagiomnium maximoviczii: 1.9 heads per square centimeter in mid-November, 1.3 heads in mid-December, 0.8 head in mid-January of the following year, 0.6 head in mid-February, and 0.5 head in mid-March.

[0067] According to the data in Experimental Example 2, based on the data in mid-November, the density of wax balls parasitized by Schlechtendalia chinensis nymphs on Brachythecium salebrosum is 47.4% higher than that on Plagiomnium maximoviczii. The density of wax balls parasitized by Schlechtendalia chinensis nymphs on Bryum pseudotriquetrum is 26.3% higher than that on Plagiomnium maximoviczii. The density of wax balls parasitized by Schlechtendalia chinensis nymphs on Brachythecium salebrosum and Bryum pseudotriquetrum is significantly higher than that on Plagiomnium maximoviczii, indicating that Brachythecium salebrosum and Bryum pseudotriquetrum are more suitable for the winter parasitism of Schlechtendalia chinensis autumn migrants compared to Plagiomnium maximoviczii.

[0068] The foregoing description of specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many changes and variations can be made in accordance with the above teachings. Although embodiments of the present invention have been shown and described, the specific embodiments are merely illustrative of the invention and not restrictive thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can, after reading this specification, make modifications, substitutions, variations, and various different selections and changes that do not make a creative contribution to the embodiments as needed, but are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for conserving Rhus chinensis hornbeam aphid, characterized in that: The steps include: S1: winter host moss selection; S2: Planting winter host moss, wherein the winter host moss is multi-fold moss or beautiful gray moss; S3: Migration of hornbeam aphids: Select hornbeams with large cracks as seed baskets, put the seeds into plastic baskets and place the baskets next to mosses, allowing hornbeam aphids to naturally fly to the mosses to overwinter; S4: Collection of overwintering nymphs of aphids: In mid-March of the following year, if nymphs on the moss emerge as spring migratory aphids, all the moss blocks can be moved to the aphid collection greenhouse to collect the spring migratory aphids.

2. The method for cultivating Rhus chinensis hornbeam aphid according to claim 1, characterized in that: In step S1, the winter host moss selection is carried out by taking the following steps: S11: Select several plots of wild Rhus chinensis and hornbeam forests to observe the migration of Rhus chinensis hornbeam aphids in autumn; S12: Collect and observe moss samples from the forest, and detect the number of parasitic wax balls of the hornbeam aphid on each moss sample. The moss with parasitic wax balls of the hornbeam aphid was screened and tentatively identified as the winter host moss of the hornbeam aphid of Rhus chinensis. S13: Collect spring migratory aphids on the winter host moss of horned aphid in mid-April to mid-May, and hang the collected spring migratory aphids on 5 about 4-5 years old Rhus chinensis trees that have not produced fruits for many years. Hang 2 bags of horned aphids on each tree, and each bag contains about 30 spring migratory aphids. In mid-June, it is observed that each tree has juveniles formed, and the moss species tentatively determined in step S12 is determined to be the winter host moss of horned aphid autumn migratory aphid of Rhus chinensis.

3. The method for cultivating Rhus chinensis aphid according to claim 1, characterized in that: The method for planting winter host moss in step S2 is as follows: S21: Collect winter host moss species, select impurities and other miscellaneous mosses in the moss species, and maintain the purity of the moss species to be above 97%; S22: Select land with convenient transportation, convenient water source, about 6-7 hours of sunshine in summer, and the sun rises in the east and sets in the west, level the land, sterilize and disinfect with carbendazim and make ridges, add water to the soil in a bucket and stir it into a thin mud, cut the geotextile into 1 square piece and spread it flat on the ridge, sprinkle the soil mud on the surface of the geotextile with a ladle and spread it evenly, tear the moss in step S21 into thin pieces at 1 catty per square and plant it evenly on the surface of the geotextile, spray a small amount of water on the moss with a sprayer after planting, insert arch bars and cover with a shade net, and wait for the moss seeds to grow false roots and attach to the geotextile.

4. The method for cultivating Rhus chinensis aphid according to claim 3, characterized in that: In step S22, the shading rate of the shade net is 75%; the geotextile weighs 250 grams per square meter; the arch strips are 5 mm thick and 2 meters long glass fibers; the carbendazim is 50% wettable powder; and the soil is soil 50 cm below the ground surface.

5. The method for conserving Rhus chinensis hornbeam aphid according to claim 1, characterized in that: In step S3, if no tender branches and leaves grow within 15 days or no new moss rhizomes grow on the geotextile, the moss nursery can be sprayed with water for moisture retention and field management can be done properly.

6. The method for cultivating Rhus chinensis hornbeam aphid according to claim 1, characterized in that: In step S3, after the inoculation of the autumn migratory aphids, attention should be paid to the dryness and humidity of the moss block within half a month to maintain the humidity of the moss block at 70%-90%.

7. The method for cultivating Rhus chinensis hornbeam aphid according to claim 1, characterized in that: In step S3, about 4-5 fall migratory aphids per square centimeter need to be maintained. If the number is insufficient, the fall swing aphids need to be manually collected and supplemented.

8. Use of a kind of gray moss as a winter host of Rhus chinensis aphid.

9. Use of a multi-fold moss as a winter host for Rhus chinensis aphids.

10. Use of multi-fold moss and beautiful gray moss as winter hosts of Rhus chinensis aphids to increase the yield of gallnuts.