Crab pond aquatic plant growth promoter as well as preparation method and use method thereof
By using crab pond aquatic plants growth promoters, combined with enzyme liquid, ointment and sediment carriers of raw materials such as pine needles and astragalus, the problems of poor growth and diseases of aquatic plants are solved, the root growth promotion and water quality purification of aquatic plants are achieved, and the survival of river crabs is improved. rate and output.
Patent Information
- Application Number
- CN202411474306.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-01-14
AI Technical Summary
In river crab farming, poor growth and diseases of aquatic plants often lead to health problems of crabs, especially in extreme conditions such as high temperature, high humidity and high pathogenic bacteria in the rainy season, which affects the growth of aquatic plants and lacks effective promoters and treatment methods.
Provide a crab pond aquatic plants growth promoter, the raw materials are pine needles, astragalus, chuanxiong, pepper, banana peel, dragon fruit peel and Shatian pomelo peel. It is formed by crushing, frozen and thawing, fermenting and mixing enzyme liquid and ointment. Enzyme liquid and ointment, combined with sediment as carriers, are made into particles, which are used to promote the growth of aquatic grass roots and water quality purification.
Effectively promote the growth of aquatic grass roots, purify water quality, improve the survival and yield of crab seedlings, reduce the inhibition of aquatic grass growth, reduce dirt adhesion on leaves, and increase the yield of river crabs.
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Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of aquatic plant breeding, specifically to the technical field of crab pond aquatic plant growth agents, and in particular to a crab pond aquatic plant growth promoter and a preparation method and a use method thereof. Background Art
[0002] Waterweed plays a vital role in crab farming. Waterweed is not only one of the important baits for crabs, but also provides an indispensable habitat and shelter for crabs, improves the overall space utilization of the pond, and reduces the self-harm rate among crabs. In addition, waterweed can purify and regulate water quality, effectively reducing the incidence of parasitic diseases. At the same time, waterweed is an important source of dissolved oxygen in the pond. Respiration at night can release carbon sources into the pond, thereby promoting the growth of crabs, preventing the occurrence of diseases, and improving the quality of crabs, ultimately achieving the effect of increasing production and income in farming.
[0003] The growth of aquatic plants in crab ponds is directly related to the success or failure of river crab farming. Artificial crab farming often leads to poor growth of aquatic plants due to a variety of factors such as high stocking density, large amounts of feeding and poor management, which affects the healthy growth of river crabs. The mechanism of aquatic plant diseases is the same as that of fish diseases, mostly caused by poor environment, imbalance in nutrient supply and demand, and biological damage. For example, aquatic plant water quality diseases are mainly manifested as: aquatic plant ossification, with symptoms of slow growth of aquatic plants and black leaves. It is caused by thin water quality and lack of nutrients; dirt attachment disease, with symptoms of more dirt on the leaves of aquatic plants, turbid water quality, and obvious inhibition of growth.
[0004] There are many factors that affect the growth of aquatic plants in crab ponds. Especially when the aquatic plants are sick, the treatment methods are too single and only treat the symptoms but not the root cause. Or chemical drugs may be used unreasonably, which will increase the damage to the aquatic plants and cause harm to the crab seedlings.
[0005] June is the time when the middle and lower reaches of the Yangtze River enter the plum rain season, which is also the key period for river crab farming. Jiangsu and Hubei are the two largest production areas of hairy crabs in the country. During the plum rain season, high temperature, high humidity, many pathogens and parasites, these extreme conditions that are not conducive to the growth of crab pond water plants, appear in the plum rain season, which greatly affects the growth of crab pond water plants. Therefore, good water plant management during the plum rain season is crucial to whether river crabs can successfully "survive the plum rain season". Summary of the invention
[0006] In view of the above problems, an object of the present invention is to provide a crab pond aquatic plant growth promoter and its preparation method and use method, so as to promote the root growth of crab pond aquatic plants, purify the water quality of crab ponds, and improve the survival and yield of crab seedlings.
[0007] In order to achieve these purposes and other advantages of the present invention, the crab pond aquatic plant growth promoter provided by the present invention has the following raw material weight ratio: 35-45 parts of pine needles, 25-35 parts of astragalus, 20-30 parts of chuanxiong, 15-20 parts of zanthoxylum, 35-40 parts of banana peels, 35-40 parts of pitaya peels, and 15-20 parts of pomelo peels.
[0008] In a specific embodiment, the crab pond aquatic plant growth promoter has a raw material weight ratio of: 35 parts of pine needles, 25 parts of astragalus, 20 parts of chuanxiong, 15 parts of zanthoxylum, 35 parts of banana peels, 35 parts of pitaya peels, and 15 parts of pomelo peels.
[0009] In a specific embodiment, the crab pond aquatic plant growth promoter has a raw material weight ratio of: 40 parts of pine needles, 30 parts of astragalus, 20-30 parts of chuanxiong, 17 parts of zanthoxylum, 37 parts of banana peels, 37 parts of pitaya peels, and 17 parts of pomelo peels.
[0010] In a specific embodiment, the crab pond aquatic plant growth promoter has a raw material weight ratio of: 45 parts of pine needles, 35 parts of astragalus, 30 parts of chuanxiong, 20 parts of zanthoxylum, 40 parts of banana peels, 40 parts of pitaya peels, and 20 parts of pomelo peels.
[0011] The preparation method of the crab pond aquatic plant growth promoter provided by the present invention comprises: Step 1, crushing the raw material to obtain powder; Step 2, freezing and thawing the powder; Step 3, fermenting the mixture obtained by freeze-thawing to obtain enzyme, extracting enzyme liquid, and grinding the drug residue into ointment; Step 4: The enzyme solution and ointment are mixed to obtain the crab pond aquatic plant growth promoter.
[0012] In one embodiment, the crab pond water grass growth promoter is further mixed with sediment, crushed or granulated, and dried to obtain crab pond water grass growth promoter particles. Preferably, the mass ratio of the crab pond water grass growth promoter to the sediment is 2:1-3. The mass ratio of soil to sand in the sediment is 2:1-2. Preferably, the sand is passed through a 5-mesh sieve.
[0013] In one embodiment, the dry material in the raw material is ground into powder of 100 mesh.
[0014] In one embodiment, the freeze-thaw process of the powder is characterized by: adding an appropriate amount of boiling water to the powder, stirring it evenly into a paste, and then freezing it at -25°C for 24 hours; after freezing for 24 hours, taking out the paste and thawing it at room temperature of 20-25°C.
[0015] In one embodiment, the freeze-thaw mixture is naturally fermented into an enzyme liquid, and the remaining drug residue after extracting the enzyme liquid is ground into a paste by a high-speed pulper. The microorganisms participating in the fermentation of the freeze-thaw mixture are activated Aspergillus oryzae spore powder, Saccharomyces cerevisiae, Lactobacillus casei, Clostridium butyricum, Trichoderma viride and Aspergillus niger.
[0016] In one embodiment, the material treatment before fermentation is characterized by: sampling and measuring the moisture and dry matter content of the mixture after freeze-thaw, requiring the moisture content to be ≤73% and the dry matter content to be ≥50%. When the moisture content exceeds the standard, dry bagasse powder is added to adjust it to meet the standard.
[0017] In one embodiment, the specific steps of fermentation are: S1. Processing of the main material of the mixture after freeze-thaw: the moisture content is required to be ≤73%, and the dry matter content is ≥50%. When the moisture content exceeds the standard, add bagasse powder to adjust it to the standard; S2. Aerobic fermentation: (1) Mixture main material into the tank: transfer the main material into the aerobic tank, with the material height of 50-55cm; (2) Adding auxiliary materials: brown sugar, soybean meal and sodium dihydrogen phosphate are used as auxiliary materials. The above auxiliary materials are evenly sprinkled on the main material and premixed to obtain a premixed material; wherein the amount of brown sugar added is 2% of the mass of the main material, the amount of soybean meal added is 10% of the mass of the main material, and the amount of sodium dihydrogen phosphate added is 0.1% of the mass of the main material.
[0018] (3) Inoculation of Aspergillus oryzae spore powder + Saccharomyces cerevisiae: Aspergillus oryzae spore powder is premixed with auxiliary materials, and Saccharomyces cerevisiae is activated and inoculated on the premixed materials; (4) Turning and tossing: After the inoculation of Aspergillus oryzae spore powder and brewer's yeast is completed on the same day, turn the materials over twice or more to make the materials evenly mixed. If the material temperature is above 40°C, turn it over every 2.5-3 hours; if the material temperature is below 40°C, turn it over every 3.5-4 hours; (5) Inoculation of Lactobacillus casei + Clostridium butyricum: On the second day, the material is taken for total acid testing. When the total acid content reaches more than 20%, the activated Lactobacillus casei and Clostridium butyricum are inoculated into the material; (6) Inoculation of green Trichoderma + black Aspergillus: On the third day, the activated green Trichoderma + black Aspergillus are inoculated into the material; the material is turned over twice and then transferred to the anaerobic tank that has been cleaned and disinfected; S3, anaerobic fermentation: Arrange the materials in the anaerobic tank to make them flat; sprinkle the bran evenly into the anaerobic tank and cover the surface of the materials, and when there is no exposed material, cover the tarpaulin, and use bran to press the edge to isolate oxygen; press the plate and start anaerobic fermentation; anaerobic cycle: more than 3 days from April to November; more than 5 days from December to March of the following year; S4, preparation out of the pond: the fermented material obtained after fermentation in step S3 is tested for total acidity. When the total acidity is ≥32%, the pond is opened and the tarpaulin and bran used to seal the surface of the fermented material are uncovered; the fermented material is squeezed and filtered to obtain enzyme liquid and medicinal residues, the medicinal residues are ground into ointment, and the enzyme liquid and the ointment are mixed to obtain the crab pond aquatic plant growth promoter.
[0019] Preferably, the added amount of Aspergillus oryzae spore powder is 0.012-0.016% of the total material (main material + auxiliary material) weight; the added amount of Saccharomyces cerevisiae is 0.01-0.02% of the total material weight; the added amount of Lactobacillus casei is 0.012-0.016% of the total material weight, and the added amount of Clostridium butyricum is 0.01-0.02% of the total material weight; the added amount of Trichoderma viride is 0.02-0.04% of the total material weight; and the added amount of Aspergillus niger is 0.02-0.04% of the total material weight.
[0020] Preferably, the working environment conditions of the preparation are characterized as follows: except for the freezing step, the environment of other working steps has a temperature of 18-30° C. and a relative humidity of 30%-70%.
[0021] A method for using the crab pond aquatic plant growth promoter of the present invention comprises: (1) Preventive use: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each mu of crab pond water surface, once a month; (2) Preventive use during the rainy season: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each mu of crab pond water surface, once every half a month; (3) Treatment dosage: Sprinkle 150 kg of the crab pond aquatic plant growth promoter on the aquatic plants on the surface of each acre of crab pond, once every other day, for 3-5 times in succession.
[0022] The present invention has at least the following beneficial effects: 1. The crab pond aquatic plant growth promoter of the present invention is easy to use, and can promote the root growth of crab pond aquatic plants, purify the water quality of the crab pond, and improve the survival and yield of crab seedlings.
[0023] 2. The crab pond water grass growth promoter of the present invention is mixed with silt and dried to form granules, which can be directly put into the crab pond water body for use. The silt acts as a carrier to carry the crab pond water grass growth promoter and sink to the bottom of the crab pond to cover the roots of the water grass. During the dissolution or dispersion of the silt, the crab pond water grass growth promoter is accurately released and acts on the roots of the water grass, and the crab pond water grass growth promoter is effectively exerted, thereby promoting the growth of the water grass root system, purifying the water quality, promoting the survival of crab seedlings, and ultimately increasing the yield of river crabs. The soil part in the silt can provide organic matter and minerals for the water grass, and the sand can not only purify the water quality, but also gather and attach dirt, so that the dirt settles on the roots of the water grass instead of the water grass leaves, thereby reducing the inhibitory effect on the growth of the water grass.
[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. DETAILED DESCRIPTION
[0025] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.
[0026] Example 1 A crab pond aquatic plant growth promoter, the weight ratio of raw materials is: 35 parts of pine needles, 25 parts of astragalus, 20 parts of chuanxiong, 15 parts of zanthoxylum, 35 parts of banana peels, 35 parts of pitaya peels, and 15 parts of pomelo peels.
[0027] The preparation method of the crab pond aquatic plant growth promoter comprises: Step 1: Grind the raw material to obtain powder; in this embodiment, the grinding requirement of the dry material in the raw material is: grind into 100 mesh powder.
[0028] Step 2, freezing the powder and then thawing it; in this embodiment, the freeze-thawing process of the powder is specifically as follows: adding an appropriate amount of boiling water to the powder, stirring it evenly into a paste, and then freezing it at a temperature of -25°C for 24 hours; after freezing for 24 hours, taking out the paste and thawing it at a room temperature of 20-25°C.
[0029] Step 3: ferment the freeze-thaw mixture to obtain enzyme, extract the enzyme liquid, and grind the residue into ointment.
[0030] In this embodiment, specifically: the freeze-thaw mixture is naturally fermented into enzymes, the remaining drug residues after extracting the enzyme liquid are ground into a paste by a high-speed pulper, and the microorganisms participating in the fermentation of the freeze-thaw mixture are activated Aspergillus oryzae spore powder, Saccharomyces cerevisiae, Lactobacillus casei, Clostridium butyricum, Trichoderma viride and Aspergillus niger.
[0031] More specifically, the steps are: S1. Processing of the main material of the mixture after freeze-thaw: the moisture content is required to be ≤73%, and the dry matter content is ≥50%. When the moisture content exceeds the standard, add bagasse powder to adjust it to the standard; S2. Aerobic fermentation: (1) Main material into the trough: transfer the main material into the aerobic trough with a laying height of 50-55cm; (2) Adding auxiliary materials: brown sugar, soybean meal and sodium dihydrogen phosphate are used as auxiliary materials. The above auxiliary materials are evenly sprinkled on the main material and premixed to obtain a premixed material; wherein the amount of brown sugar added is 2% of the mass of the main material, the amount of soybean meal added is 10% of the mass of the main material, and the amount of sodium dihydrogen phosphate added is 0.1% of the mass of the main material.
[0032] (3) Inoculation of Aspergillus oryzae spore powder + Saccharomyces cerevisiae: Aspergillus oryzae spore powder is premixed with auxiliary materials, and Saccharomyces cerevisiae is activated and inoculated on the premixed materials; (4) Turning and tossing: After the inoculation of Aspergillus oryzae spore powder and brewer's yeast is completed on the same day, turn the materials over twice or more to make the materials evenly mixed. If the material temperature is above 40°C, turn it over every 2.5-3 hours; if the material temperature is below 40°C, turn it over every 3.5-4 hours; (5) Inoculation of Lactobacillus casei + Clostridium butyricum: On the second day, the material is taken for total acid testing. When the total acid content reaches more than 20%, the activated Lactobacillus casei and Clostridium butyricum are inoculated into the material; (6) Inoculation of green Trichoderma + black Aspergillus: On the third day, the activated green Trichoderma + black Aspergillus are inoculated into the material; the material is turned over twice and then transferred to the anaerobic tank that has been cleaned and disinfected; S3, anaerobic fermentation: Arrange the materials in the anaerobic tank to make them flat; sprinkle the bran evenly into the anaerobic tank and cover the surface of the materials, cover the tarpaulin until there is no exposed material, and use the bran to spread the materials to press the edges to isolate oxygen; press the plate to start anaerobic fermentation; anaerobic cycle: more than 3 days from April to November; more than 5 days from December to March of the following year; obtain the fermented material after anaerobic fermentation; S4, preparation out of the pond: the fermented material obtained after fermentation in step S3 is tested for total acidity. When the total acidity is ≥32%, the pond is opened, the tarpaulin and bran used to seal the surface of the fermented material are uncovered, the fermented material is squeezed and filtered to obtain enzyme liquid and medicinal residues, the medicinal residues are ground into ointment, and the enzyme liquid and the ointment are mixed to obtain the crab pond aquatic plant growth promoter.
[0033] Among them, the addition amount of Aspergillus oryzae spore powder is 0.012-0.016% of the total material (main material + auxiliary material) weight; the addition amount of brewer's yeast is 0.01-0.02% of the total material weight; the addition amount of Lactobacillus casei is 0.012-0.016% of the total material weight, the addition amount of Clostridium butyricum is 0.01-0.02% of the total material weight; the addition amount of Trichoderma viride is 0.02-0.04% of the total material weight; the addition amount of Aspergillus niger is 0.02-0.04% of the total material weight.
[0034] Step 4: The enzyme solution and ointment are mixed to obtain the crab pond aquatic plant growth promoter.
[0035] The working environment conditions of the preparation of this embodiment are characterized as follows: except for the freezing step, the environment of other working steps has a temperature of 18-30° C. and a relative humidity of 30%-70%.
[0036] Example 2 A crab pond aquatic plant growth promoter, which is different from Example 1 in that the weight ratio of the raw materials is: 40 parts of pine needles, 30 parts of astragalus, 20-30 parts of chuanxiong, 17 parts of zanthoxylum, 37 parts of banana peels, 37 parts of pitaya peels, and 17 parts of pomelo peels.
[0037] The other steps are the same.
[0038] Example 3 A crab pond aquatic plant growth promoter, which is different from Example 1 in that the weight ratio of the raw materials is: 45 parts of pine needles, 35 parts of astragalus, 30 parts of chuanxiong, 20 parts of zanthoxylum, 40 parts of banana peels, 40 parts of pitaya peels, and 20 parts of pomelo peels.
[0039] The other steps are the same.
[0040] Example 4 The difference from Example 1 is that it further includes: further mixing the crab pond water grass growth promoter in step 4 with mud and sand, drying after granulation (or crushing into particles after drying), the drying temperature is lower than 70°C, and obtaining crab pond water grass growth promoter particles with a particle size of 3 to 10 mm. The mass ratio of the crab pond water grass growth promoter to mud and sand is 1:1, the mass ratio of soil to sand in the mud and sand is 1:1, and the sand passes through a 5-mesh sieve.
[0041] Example 5 The method for using the crab pond aquatic plant growth promoter described in any one of Embodiments 1 to 4 comprises: (1) Preventive use: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each mu of crab pond water surface, once a month; (2) Preventive use during the rainy season: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each mu of crab pond water surface, once every half a month; (3) Treatment dosage: Sprinkle 150 kg of the crab pond aquatic plant growth promoter on the aquatic plants on the surface of each acre of crab pond, once every other day, for 3-5 times in succession.
[0042] Example 6 On June 23, 2023, the plum rain season began in Wuxi, Jiangsu Province. At the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences in Wuxi, Jiangsu Province, 12 glass fish tanks with a length of 1 meter, a width of 0.5 meters, and a height of 0.5 meters were selected and placed outdoors. Mud and organic matter were laid on the bottom of the fish tanks, including: Experimental group 1-1, experimental group 1-2, control group 1 and blank group 1 were planted with hornwort (plant spacing of 50 cm, initial root length of 1-5 cm) in water bodies.
[0043] Experimental group 2-1, experimental group 2-2, control group 2 and blank group 2 were planted with Hydrilla verticillata in water bodies (plant spacing 20 cm, initial root length 1~3 cm).
[0044] Experimental group 3-1, experimental group 3-2, control group 3 and blank group 3 were planted with Vallisneria verticillata (plant spacing 15 cm, initial root length 1~5 cm) in water bodies.
[0045] Experimental group 4-1, experimental group 4-2, control group 4 and blank group 4 were planted with Elodea (plant spacing of 10 cm, initial root length of 1-5 cm) in water bodies.
[0046] All test groups 1-1, 2-1, 3-1 and 4-1 were treated with the crab pond aquatic plant growth promoter described in Example 1 every 15 days to maintain the aquatic plants in the fish tank according to the preventive use amount during the plum rain season (100 kg / mu).
[0047] All test groups 1-2, test group 2-2, test group 3-2, and test group 4-2 used the crab pond aquatic plant growth promoter described in Example 4 to maintain the aquatic plants in the fish tank every 15 days according to the preventive usage amount during the plum rain season (100 kg / mu).
[0048] All control groups used conventional methods (liquid fertilizer for aquatic plants, 6 ml / 100 liters of water) to maintain aquatic plants in the fish tanks, and all blank groups did not take any measures to maintain aquatic plants.
[0049] Twenty crab seedlings weighing 1 liang were placed in each fish tank. Crab feed was fed to each fish tank at regular intervals and in fixed quantities every day. Artificial oxygen was added to each fish tank once a day for 30 minutes each time. The water was changed once a week. The oxygen content, turbidity and pH value of the water in each fish tank were measured before water change. At the end of the experiment, the average values of multiple measurements of oxygen content, turbidity and pH value of the water in each fish tank, the number of surviving crab seedlings and the number of molting times (total number of molting times / initial number of crab seedlings released) were calculated. The average initial root length when aquatic plants were planted and the average root length at the end of the experiment were measured.
[0050] On July 25, 2023, the plum rain season ended in Jiangsu Province, and the experiment ended. The results are shown in Table 1: From the data in Table 1, it can be seen that the water oxygen content, turbidity, pH value, number of crab seedlings surviving, number of molting times, and root growth length of all test groups are significantly higher than those of the control group and the blank group. Among the test groups, test groups 1-2, 2-2, 3-2, and 4-2, which used the crab pond aquatic plant growth promoter granules of Example 4, were significantly better than test groups 1-1, 2-1, 3-1, and 4-1, which used the crab pond aquatic plant growth promoter of Example 1, in terms of improving turbidity, increasing oxygen content, and root growth length. By the end of the test, the roots of the aquatic plants in all test groups were healthy, without root rot or corruption.
[0051] Example 7 Xinghua Tongfu Hairy Crab Co., Ltd. is located in Yongfeng Town, Xinghua City, Jiangsu Province. In 2023, before the plum season in Xinghua area, 100 kg of crab pond aquatic plant growth promoter described in Example 1 was used to sprinkle the aquatic plant growth area per acre of crab pond every month; after the plum season, 100 kg of crab pond aquatic plant growth promoter was used to sprinkle the aquatic plant growth area per acre of crab pond every half month; after the plum season ended, 100 kg of crab pond aquatic plant growth promoter was used to sprinkle the aquatic plant growth area per acre of crab pond every month. The company's crab pond aquatic plants have been growing well, the water quality is clear, and the root system of aquatic plants is well developed. By the peak season for hairy crab sales, the company's per-acre hairy crab production was 410 jin, far higher than the average per-acre production of 300 jin for hairy crabs in Jiangsu, of which 51% were hairy crabs weighing more than 3 liang, and 45% were hairy crabs weighing 2-3 liang.
[0052] Example 8 Xinghua Wang's Premium Hairy Crab Ecological Breeding Base is located in Taozhuang Town, Xinghua City, Taizhou City, Jiangsu Province. In 2023, before the plum rain season in Xinghua area, 100 kg of the crab pond aquatic plant growth promoter described in Example 4 was used to sprinkle the aquatic plant growth area per acre of crab pond every month; after the plum rain season, 100 kg of the crab pond aquatic plant growth promoter was used to sprinkle the aquatic plant growth area per acre of crab pond every half a month; after the plum rain season ended, 100 kg of the crab pond aquatic plant growth promoter was used to sprinkle the aquatic plant growth area per acre of crab pond every month. The aquatic plants in the crab ponds of this base have been growing well, the water quality is clear, and the roots of the aquatic plants are well developed. By the peak season for hairy crab sales, the base produced 425 catties of hairy crabs per mu, far higher than the average yield of 300 catties per mu of hairy crabs in Jiangsu Province, of which 49% were hairy crabs weighing more than 3 taels, and 47% were hairy crabs weighing 2 to 32 taels.
[0053] Example 9 Jianhu County Ji Zhaohu Ecological Hairy Crab Breeding Base is located in Malu Village, Jianhu County, Yancheng City, Jiangsu Province. In 2023, due to inadequate maintenance of crab pond aquatic plants during the rainy season, the goldfish algae and Vallisneria planted in the crab ponds of the base had root rot, and the water quality was turbid, foaming, and a high proportion of crab seedlings floating. Sprinkle 150 kg of the promoter on each acre of water surface aquatic plants, use it once every other day, and sprinkle it on the aquatic plant growth area for 3 consecutive times; the root rot of crab pond aquatic plants is eliminated, the foam on the water surface disappears, and the crab seedlings no longer float. Thereafter, during the rainy season, 100 kg of the crab pond aquatic plant growth promoter is used per acre of crab pond every half a month to sprinkle the aquatic plant growth area; after the end of the plum rain season, 100 kg of the crab pond aquatic plant growth promoter is used per acre of crab pond every month to sprinkle the aquatic plant growth area. Since then, the crab pond aquatic plants in the breeding base have been growing well, the water quality is clear, and the aquatic plant root system is well developed. During the peak season for hairy crab sales, the base produced 396 kilograms of hairy crabs per mu, far higher than the average yield of 300 kilograms per mu of hairy crabs in Jiangsu Province. Among them, hairy crabs weighing more than 3 taels accounted for 48%, and hairy crabs weighing 2-30 taels accounted for 47%.
[0054] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized.
Claims
1. A crab pond aquatic plant growth promoter, characterized in that: The raw material ratio is as follows by weight: 35-45 parts of pine needles, 25-35 parts of astragalus, 20-30 parts of chuanxiong, 15-20 parts of prickly ash, 35-40 parts of banana peel, 35-40 parts of pitaya peel, and 15-20 parts of pomelo peel; the crab pond aquatic plant growth promoter is obtained after the raw materials are crushed, frozen and thawed, and fermented.
2. A method for preparing a crab pond aquatic plant growth promoter, characterized in that: include: Step 1, crushing the raw material according to claim 1 to obtain powder; Step 2, freezing and thawing the powder; Step 3, fermenting the mixture obtained by freeze-thawing to obtain enzyme, extracting enzyme liquid, and grinding the drug residue into ointment; Step 4: The enzyme solution and ointment are mixed to obtain the crab pond aquatic plant growth promoter.
3. The method for preparing the crab pond aquatic plant growth promoter according to claim 2, characterized in that: The crab pond aquatic plant growth promoter is further mixed evenly with mud and sand, granulated and dried to obtain crab pond aquatic plant growth promoter granules.
4. The method for preparing the crab pond aquatic plant growth promoter according to claim 3, characterized in that: The mass ratio of the crab pond aquatic plant growth promoter to the sediment is 2:1-3; the mass ratio of the soil to the sand in the sediment is 2:1-2; and the sand is passed through a 5-mesh sieve.
5. The method for preparing the crab pond aquatic plant growth promoter according to claim 2, characterized in that: The raw material is crushed into a powder of 100 meshes; the freeze-thaw process of the powder is characterized by: adding boiling water to the powder, stirring it evenly into a paste and then freezing it at a temperature of -25°C; after freezing, taking out the paste and thawing it.
6. The method for preparing the crab pond aquatic plant growth promoter according to claim 5, characterized in that: The freeze-thaw mixture is naturally fermented into enzyme liquid, and the remaining drug residue after extracting the enzyme liquid is ground into a paste. The microorganisms participating in the fermentation of the freeze-thaw mixture are activated Aspergillus oryzae spore powder, Saccharomyces cerevisiae, Lactobacillus casei, Clostridium butyricum, Trichoderma viride and Aspergillus niger.
7. The method for preparing the crab pond aquatic plant growth promoter according to claim 6, characterized in that: The specific steps of fermentation are: S1. The main ingredients of the freeze-thaw mixture are processed to a moisture content of ≤73% and a dry matter content of ≥50%; S2, aerobic fermentation: the main material and the auxiliary material are mixed to obtain the material; the material is inoculated with Aspergillus oryzae spore powder + Saccharomyces cerevisiae, Lactobacillus casei + Clostridium butyricum, Trichoderma viride + Aspergillus niger in sequence; and the material is transferred to the anaerobic tank; S3, anaerobic fermentation: After the material is leveled, it is covered with bran and sealed for anaerobic fermentation; from April to November, it takes more than 3 days; from December to March of the following year, it takes more than 5 days; S4, preparation out of the pond: take the fermented material obtained after fermentation in step S3 for total acid detection, when the total acid is ≥32%, take the fermented material and squeeze and filter it to obtain enzyme liquid and medicinal residues, grind the medicinal residues to form ointment, and then mix the enzyme liquid and the ointment to obtain the crab pond aquatic plant growth promoter.
8. The method for preparing the crab pond aquatic plant growth promoter according to claim 7, characterized in that: The amount of Aspergillus oryzae spore powder added is 0.012-0.016% of the total material weight; the amount of brewer's yeast added is 0.01-0.02% of the total material weight; the amount of Lactobacillus casei added is 0.012-0.016% of the total material weight, the amount of Clostridium butyricum added is 0.01-0.02% of the total material weight; the amount of Trichoderma viride added is 0.02-0.04% of the total material weight; the amount of Aspergillus niger added is 0.02-0.04% of the total material weight.
9. A method for using the crab pond aquatic plant growth promoter according to claim 1 or the crab pond aquatic plant growth promoter prepared by the preparation method according to claim 2, characterized in that: include: 1) Preventive use: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each mu of crab pond water surface, once a month; 2) Preventive use during the rainy season: Sprinkle 100 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each acre of crab pond water surface, once every half a month; 3) Treatment dosage: Sprinkle 150 kg of the crab pond aquatic plant growth promoter on the aquatic plants on each acre of crab pond water surface, use once every other day, and continue for 3-5 times.