Sympodial bamboo argillaceous cutting medium and preparation process thereof

Abstract

The invention belongs to the technical field of cutting media. The invention provides a sympodial bamboo argillaceous cutting medium. The sympodial bamboo argillaceous cutting medium is prepared from 40-55 parts of humus soil, 10-12 parts of charcoal, 15-20 parts of filler, 8-16 parts of river sand, 2-4 parts of antibacterial substance and 1.5-3 parts of nitrogen-potassium fertilizer. The sympodial bamboo argillaceous cutting medium is reasonable in component proportion, compared with a traditional medium, the sympodial bamboo argillaceous cutting medium has the advantages of being good in air permeability, high in moisture regulation and control capacity, appropriate in pH value, comprehensive in nutrition, capable of inhibiting germ pollution and the like, and the rooting rate, the survival rate and the growth speed of cuttings can be effectively increased. Moreover, a simple and efficient preparation process is adopted, and processes of compost fermentation, carbonization treatment and the like are adopted, so that excellent quality of the substrate is ensured, various operation control in the preparation process is easy to realize, and feasibility is provided for large-scale production.

Description

Technical Field

[0001] The invention relates to the technical field of cutting media, in particular to a clumping bamboo mud cutting media and a preparation process thereof. Background Art

[0002] Bamboo is an important component of forest resources and can be divided into two categories: clumping bamboo and scattered bamboo. Clumping bamboo has the characteristics of rapid growth, strong adaptability, large bamboo shoot production, high timber yield, beautiful appearance, strong soil and water retention capacity, and strong environmental restoration ability. It has great utilization value and ecological and economic development potential, and is the priority bamboo species for the development of bamboo shoot and timber dual-purpose forests in various places.

[0003] Cuttings, as a vegetative propagation technique for clumping bamboo, offer high propagation efficiency, a short propagation cycle, simplicity, convenience, low cost, and large-scale production. However, due to the delicate root system of clumping bamboo, rooting of cuttings is difficult, and the soil and substrate requirements are high. Traditional cutting substrates typically contain a large amount of garden soil and clay, which have poor air permeability and can easily lead to poor air circulation around the cuttings. Excessive moisture in the substrate, especially in humid environments, can cause oxygen deprivation in the roots of the cuttings, leading to root rot and seriously affecting the growth and survival of the bamboo cuttings. Furthermore, the water retention of the cutting substrate is a key factor affecting the growth of clumping bamboo cuttings. Traditional substrates often lack good water regulation capabilities, easily leading to either excessive or insufficient water. Excessive moisture can easily lead to root rot, while insufficient moisture can cause the cuttings to wilt due to lack of water. For example, research by Wang Ping et al. (2019) showed that the substrate's ability to retain moisture directly affects the root growth of clumping bamboo cuttings. If moisture evaporates excessively, the roots of the cuttings will not be able to obtain enough moisture, resulting in restricted growth.

[0004] Secondly, the optimal pH range for clumping bamboo growth is generally between 5 and 7. Overly acidic or alkaline substrates can interfere with the plant's growth and development, affecting its survival rate. Traditional clumping bamboo cutting media, due to the large amounts of acidic or alkaline substances added, has certain drawbacks in pH regulation.

[0005] As a fast-growing plant, clumping bamboo has high nutritional requirements for its substrate. Traditional cutting substrates often have a limited nutritional profile and are unable to meet the needs of bamboo growth. In particular, some substrates lack trace elements and organic matter, which can lead to slow growth and even symptoms such as chlorosis in bamboo cuttings. Furthermore, traditional substrates cannot be reused after use, resulting in a waste of resources. Alternatively, due to their long use, the substrates are susceptible to contamination by pathogens, which in turn affects the healthy growth of bamboo cuttings. To improve the lifespan and reusability of the substrates, researchers have attempted to disinfect them to varying degrees, but this issue remains unresolved.

[0006] Therefore, in view of the problems of traditional clumping bamboo cutting media such as poor air permeability, weak ability to regulate moisture and pH value, single nutrient composition, and susceptibility to pathogen contamination, research and development of a clumping bamboo cutting media with comprehensive nutrition, good air permeability, appropriate moisture and pH value, and effective prevention of pathogen contamination to improve the growth rate and survival rate of cuttings has become an urgent problem to be solved. Summary of the Invention

[0007] The purpose of the present invention is to provide a bamboo clumping mud cutting medium and a preparation process thereof in view of the deficiencies in the prior art.

[0008] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0009] The present invention provides a clumping bamboo mud cutting medium comprising the following components in parts by weight:

[0010] 40-55 parts of humus soil, 10-12 parts of charcoal, 15-20 parts of filler, 8-16 parts of river sand, 2-4 parts of antibacterial agent, and 1.5-3 parts of nitrogen and potassium fertilizer.

[0011] Preferably, the humus soil is formed by composting and fermenting plant residues and animal excrement.

[0012] Preferably, the plant residues are one or more of leaves, grass and crop straw;

[0013] The animal excrement is one or more of cow dung, horse dung and chicken dung;

[0014] The mass ratio of the plant residues to animal feces is 3-4:1-2.

[0015] Preferably, the charcoal is made from raw materials through carbonization treatment;

[0016] The raw materials include the following components in parts by weight: 5 to 10 parts of rice husks, 8 to 10 parts of peanut shells, and 10 to 12 parts of corn stalks;

[0017] The temperature of the carbonization treatment is 280-320° C., and the time of the carbonization treatment is 5-8 hours.

[0018] Preferably, the filler is one or more of perlite, expanded zircon, expanded vermiculite and ceramsite;

[0019] The particle size of the filler is 15 to 25 μm.

[0020] Preferably, the particle size of the river sand is 0.5 to 1 mm.

[0021] Preferably, the antibacterial substance is a natural plant extract;

[0022] The natural plant extract is tea tree oil, peppermint oil or clove oil.

[0023] The present invention also provides a process for preparing the clumping bamboo mud cutting medium, comprising the following steps:

[0024] 1) Preparation of humus soil: chop plant residues into small pieces of 1-2 cm, crush animal feces into particles with an outer diameter of 2-3 cm, then mix the plant residues and animal feces according to the proportion, add soil and water to the mixture, control the water content of the mixture to 60-70%, and adjust the water content to 200-300 g / m 3 The microbial agent is inoculated in an amount of , and fermentation is carried out by composting. The height of the pile is 30 to 50 cm, and the pile is turned once a day until the fermentation temperature of the pile remains constant to obtain humus soil;

[0025] 2) Preparation of charcoal: The raw material is crushed to a particle size of 6 to 8 mm, dried to a moisture content of 10 to 15%, and then carbonized in a carbonization furnace at a temperature of 280 to 320° C. for 5 to 8 hours to obtain charcoal;

[0026] 3) Compound substrate: humus soil, charcoal, filler, river sand, antibacterial substances and nitrogen and potassium fertilizers are mixed in proportion to obtain a muddy cutting substrate for clumping bamboo.

[0027] Preferably, the microbial agent in step 1) is a mixture of Bacillus and yeast, and the mass ratio of Bacillus to yeast is 1:1-2;

[0028] The mass ratio of the soil to animal feces is 8-12:1-2.

[0029] Preferably, in step 3), the mixing speed is 300-400 r / min, the mixing temperature is 20-30° C., and the mixing time is 35-50 min.

[0030] The beneficial effects of the present invention include the following:

[0031] 1) The clumping bamboo mud cutting medium of the present invention has a significant effect in improving air permeability and drainage by rationally mixing humus soil, charcoal, filler and river sand. The addition of charcoal and river sand improves the aeration of the medium, prevents water accumulation, avoids root hypoxia and rot, and ensures the healthy growth of the root system of the clumping bamboo cuttings.

[0032] 2) The water retention capacity of the bamboo cutting medium of the present invention has been optimized, and it can maintain an appropriate amount of water in a humid environment, avoiding excessive evaporation or water accumulation. Reasonable water regulation can promote the stable growth of the root system of the cuttings, avoid root rot caused by excessive water or root withering caused by insufficient water, and thus improve the survival rate of the cuttings.

[0033] 3) The present invention ensures that the pH value of the substrate is maintained within the appropriate range of 5-7 through appropriate ingredient ratios, meeting the soil pH requirements of clumping bamboo, helping to improve the bamboo's ability to absorb nutrients, and avoiding the negative effects of overly acidic or overly alkaline environments on bamboo growth.

[0034] 4) The clumping bamboo mud cutting medium of the present invention is rich in organic matter, minerals, and trace elements. For example, the nitrogen and potassium provided by nitrogen and potassium fertilizers can promote the absorption of water and nutrients by the bamboo roots, enabling rapid growth and development. The organic matter provided by humus soil can enhance the nutrient storage capacity of the medium, ensuring that the bamboo cuttings can receive a balanced nutrient supply and promote healthy growth.

[0035] 5) The clumping bamboo mud cutting medium of the present invention can effectively inhibit the growth of pathogens and fungi and reduce the risk of disease by adding natural plant extracts. Especially in a humid environment, the antibacterial substance can protect the bamboo cuttings from pathogens for a long time, thereby improving the survival rate and healthy growth of the cuttings.

[0036] 6) Compared with traditional substrates, the bamboo cutting substrate of the present invention can effectively extend the service life of the substrate and reduce the probability of the substrate being contaminated by pathogens through reasonable proportions and the addition of antibacterial substances, thereby reducing the frequency of substrate replacement, reducing production costs, and improving the resource utilization efficiency of the substrate.

[0037] 7) The bamboo mud cutting matrix of the present invention adopts a simple and efficient preparation process, using processes such as composting fermentation and carbonization treatment to ensure the excellent quality of the matrix, and various operations and controls in the preparation process are easy to implement, providing feasibility for large-scale production. DETAILED DESCRIPTION

[0038] The present invention provides a clumping bamboo mud cutting medium comprising the following components in parts by weight:

[0039] 40-55 parts of humus soil, 10-12 parts of charcoal, 15-20 parts of filler, 8-16 parts of river sand, 2-4 parts of antibacterial agent, and 1.5-3 parts of nitrogen and potassium fertilizer.

[0040] The clumping bamboo mud cutting medium of the present invention comprises 40 to 55 parts of humus soil, preferably 45 to 53 parts, more preferably 48 to 52 parts, and even more preferably 50 parts.

[0041] In the present invention, the humus soil is preferably formed by composting and fermenting plant residues and animal excrement.

[0042] In the present invention, the plant residues are preferably one or more of leaves, grass and crop straw;

[0043] The animal manure is preferably one or more of cow manure, horse manure and chicken manure;

[0044] The mass ratio of the plant residues to animal feces is preferably 3-4:1-2, more preferably 3.4-3.6:1.4-1.6, and even more preferably 3.5:1.5.

[0045] In the present invention, the humus soil is rich in humus (organic matter derived from plant residues and animal feces decomposed by microbial agents), which provides a rich nutritional component for plants. It also contains major nutrients such as nitrogen, phosphorus, and potassium, as well as trace elements such as iron, manganese, and zinc required for plant growth. Furthermore, due to the strong water absorption of humus, the humus soil has good water retention capacity, which can provide the moisture required by bamboo seedlings while not causing excessive moisture, thereby preventing water accumulation at the roots. Furthermore, the humus soil helps improve the soil structure and increase soil aeration, making it more suitable for plant root growth, and also maintains a pH value suitable for the growth of clumping bamboo.

[0046] The clumping bamboo mud cutting medium of the present invention contains 10 to 12 parts of charcoal, preferably 10.5 to 11.5 parts, and more preferably 11 parts.

[0047] In the present invention, the charcoal is preferably made from raw materials through carbonization treatment;

[0048] The raw materials preferably include the following components in parts by weight: 5 to 10 parts of rice husks, 8 to 10 parts of peanut shells, and 10 to 12 parts of corn stalks;

[0049] The raw material further preferably comprises 6 to 9 parts of rice husks, more preferably 7 to 8 parts;

[0050] The raw material further preferably comprises 8.5 to 9.5 parts of peanut shells, more preferably 9 parts;

[0051] The raw material further preferably comprises 10.5 to 11.5 parts of corn stover, more preferably 11 parts;

[0052] The temperature of the carbonization treatment is preferably 280-320° C., more preferably 290-310° C., and more preferably 300° C.; the time of the carbonization treatment is preferably 5-8 h, more preferably 6-7 h, and more preferably 6.5 h.

[0053] In the present invention, the charcoal has a porous structure, which can improve the drainage and aeration of the substrate, thereby helping the cuttings to take root and grow; it can absorb a certain amount of water, thereby providing a stable water source for the root system under drought conditions, helping to maintain the moisture of the substrate, avoid excessive drying, and promote the survival of clumping bamboo cuttings.

[0054] Charcoal contains trace minerals and carbon, which promote healthy plant growth. Through its structure, charcoal absorbs and releases nutrients, creating a slow-release environment that prevents nutrient loss and promotes stable bamboo root growth. It also possesses antimicrobial properties, inhibiting the growth of certain pathogenic microorganisms, reducing the presence of harmful bacteria and fungi in the soil or substrate, and minimizing the occurrence of plant diseases such as root rot. Especially in humid environments, charcoal's antimicrobial properties provide a healthier, cleaner environment for clumping bamboo.

[0055] The porous structure of charcoal can also improve the physical properties of the substrate, making it looser and more porous, and promoting the structural stability of the soil. For clumping bamboo cuttings, good soil structure can help the root system develop better, prevent soil compaction, and facilitate the growth and establishment of cuttings.

[0056] Charcoal can regulate the pH of the substrate to a certain extent, maintaining a relatively stable pH level. Clumping bamboo grows best in a relatively neutral or slightly acidic environment, and charcoal can play a role in this regard, preventing the pH of the substrate from being too high or too low, which can damage the bamboo roots.

[0057] Charcoal has a strong adsorption capacity, capable of absorbing harmful substances in the soil, such as heavy metals and toxins, which is crucial for protecting the healthy growth of bamboo roots. By absorbing and fixing these harmful substances, charcoal can reduce the risk of root exposure to these harmful substances and improve the plant's growth environment.

[0058] The clumping bamboo mud cutting matrix of the present invention contains 15 to 20 parts of filler, preferably 16 to 19 parts, more preferably 17 to 18 parts, and more preferably 17.5 parts.

[0059] In the present invention, the filler is preferably one or more of perlite, expanded zircon, expanded vermiculite and ceramsite;

[0060] The particle size of the filler is preferably 15 to 25 μm, more preferably 18 to 22 μm, and even more preferably 20 μm.

[0061] In the present invention, the filler is beneficial to improving the air permeability and drainage of the matrix and increasing the stability of the matrix.

[0062] The clumping bamboo mud cutting medium of the present invention comprises 8 to 16 parts of river sand, preferably 9 to 14 parts, more preferably 10 to 12 parts, and even more preferably 11 parts.

[0063] In the present invention, the particle size of the river sand is preferably 0.5 to 1 mm, more preferably 0.6 to 0.8 mm, and even more preferably 0.7 mm.

[0064] The bamboo mud matrix of the present invention contains 2 to 4 parts of antibacterial substances, preferably 2.5 to 3.5 parts, and more preferably 3 parts.

[0065] In the present invention, the antibacterial substance is preferably a natural plant extract;

[0066] The natural plant extract is preferably tea tree oil, peppermint oil or clove oil.

[0067] In the present invention, the antibacterial agent can effectively reduce the risk of pathogens and improve the survival rate of cuttings. Moreover, the selection of natural plant extracts (tea tree oil, peppermint oil or clove oil) as the antibacterial agent is in line with the trend of environmental protection and sustainable development.

[0068] The bamboo mud matrix of the present invention contains 1.5 to 3 parts of nitrogen and potassium fertilizers, preferably 1.8 to 2.5 parts, more preferably 2 to 2.3 parts, and more preferably 2.2 parts.

[0069] In the present invention, the nitrogen and potassium fertilizers can enhance the nutrient supply of the substrate, promote the growth of bamboo roots and branches and leaves, enhance the stress resistance of bamboo, and improve the nutritional structure of the substrate to help the development of bamboo roots.

[0070] The present invention also provides a process for preparing the bamboo clumping mud cutting medium, comprising the following steps:

[0071] 1) Preparation of humus soil: chop plant residues into small pieces of 1-2 cm, crush animal feces into particles with an outer diameter of 2-3 cm, then mix the plant residues and animal feces according to the proportion, add soil and water to the mixture, control the water content of the mixture to 60-70%, and adjust the water content to 200-300 g / m 3 The microbial agent is inoculated in an amount of , and fermentation is carried out by composting. The height of the pile is 30 to 50 cm, and the pile is turned once a day until the fermentation temperature of the pile remains constant to obtain humus soil;

[0072] 2) Preparation of charcoal: The raw material is crushed to a particle size of 6 to 8 mm, dried to a moisture content of 10 to 15%, and then carbonized in a carbonization furnace at a temperature of 280 to 320° C. for 5 to 8 hours to obtain charcoal;

[0073] 3) Compound substrate: humus soil, charcoal, filler, river sand, antibacterial substances and nitrogen and potassium fertilizers are mixed in proportion to obtain a muddy cutting substrate for clumping bamboo.

[0074] In the present invention, the microbial agent in step 1) is preferably a mixture of Bacillus and yeast; the mass ratio of Bacillus to yeast is preferably 1:1-2, more preferably 1:1.4-1.6, and more preferably 1:1.5;

[0075] The mass ratio of soil to animal feces is preferably 8-12:1-2, more preferably 9-11:1.4-1.6, and even more preferably 10:1.5.

[0076] In the present invention, the mixing speed in step 3) is preferably 300-400 r / min, more preferably 340-360 r / min, and more preferably 350 r / min; the mixing temperature is preferably 20-30°C, more preferably 24-26°C, and more preferably 25°C; the mixing time is preferably 35-50 min, more preferably 40-45 min, and more preferably 42 min.

[0077] The technical solutions provided by the present invention are described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0078] The nitrogen-potassium fertilizer used in the examples and comparative examples was a nitrogen-potassium compound fertilizer (containing N≧13.5%, containing K≧46%) produced by Jinan Xinnuo Chemical Co., Ltd.

[0079] The soil used in the examples and comparative examples was silt soil from a local agricultural area, with a particle size of 0.02 to 1 mm and a pH of about 7.5.

[0080] Example 1

[0081] 1) Preparation of humus soil: Chop corn stalks into 1 cm segments and crush cow dung into particles with an outer diameter of 2 cm. Then mix corn stalks and cow dung in a mass ratio of 3:1. Add soil (the mass ratio of soil to cow dung is 8:1) and water to the mixture and mix again. Control the water content of the mixture to 65% and adjust the weight of the mixture to 200 g / m 3 The microbial agent is inoculated in an amount of (a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:1), and fermentation is carried out by composting. The height of the pile is 30 cm, and the pile is turned once at 9:00 am every day until the fermentation temperature of the pile remains constant, thereby obtaining humus soil;

[0082] 2) Preparation of charcoal: Rice husks, peanut shells, and corn stalks were pulverized to a particle size of 6 mm, dried at 60°C to a moisture content of 10%, and then carbonized in a carbonization furnace at 280°C for 6 hours to obtain charcoal;

[0083] 3) Humus soil, charcoal, perlite (particle size 15 μm), river sand (particle size 0.5 mm), tea tree oil, and nitrogen and potassium fertilizers were mixed in a blender at a mass ratio of 40:10:15:8:2:1.5 at a speed of 300 r / min and a temperature of 20°C for 35 min to obtain a muddy cutting medium for clumping bamboo.

[0084] Example 2

[0085] 1) Preparation of humus soil: Chop wheat straw into 2 cm small segments and crush horse manure into particles with an outer diameter of 3 cm. Then mix wheat straw and horse manure in a mass ratio of 4:1.5. At the same time, add soil (the mass ratio of soil to cow dung is 12:1.5) and water, mix again, control the water content of the mixture to 60%, and adjust the weight of the mixture to 220 g / m 3 The microbial agent is inoculated in an amount of (a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:2), and fermentation is carried out by composting. The height of the pile is 40 cm, and the pile is turned once at 9:00 am every day until the fermentation temperature of the pile remains constant, thereby obtaining humus soil;

[0086] 2) Preparation of charcoal: Rice husks, peanut shells, and corn stalks were pulverized to a particle size of 8 mm, dried at 50°C to a moisture content of 15%, and then carbonized in a carbonization furnace at 320°C for 5 hours to obtain charcoal;

[0087] 3) Humus soil, charcoal, expanded zircon (particle size 20 μm), river sand (particle size 1 mm), peppermint oil, and nitrogen and potassium fertilizers were mixed in a blender at a mass ratio of 55:12:18:10:3:3 at 400 rpm and 30°C for 40 min to obtain a muddy cutting medium for clumping bamboo.

[0088] Example 3

[0089] 1) Preparation of humus soil: chop alfalfa into 1.5 cm segments, crush chicken manure into particles with an outer diameter of 2.5 cm, then mix alfalfa and chicken manure in a mass ratio of 3.5:2, add soil (the mass ratio of soil to chicken manure is 9:2) and water, mix again, control the moisture content of the mixture to 70%, and adjust the weight of the mixture to 300 g / m 3 The microbial agent is inoculated in an amount of (a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:1.5), and fermentation is carried out by composting. The height of the pile is 50 cm, and the pile is turned once at 9:00 am every day until the fermentation temperature of the pile remains constant, thereby obtaining humus soil;

[0090] 2) Preparation of charcoal: Rice husks, peanut shells, and corn stalks were pulverized to a particle size of 7 mm, dried at 55°C to a moisture content of 12%, and then carbonized in a carbonization furnace at 300°C for 8 hours to obtain charcoal;

[0091] 3) Humus soil, charcoal, expanded vermiculite (particle size 25 μm), river sand (particle size 0.8 mm), clove oil, and nitrogen and potassium fertilizers were mixed in a blender at a mass ratio of 50:11:20:16:4:2 at a speed of 350 r / min and a temperature of 25°C for 50 min to obtain a muddy cutting medium for clumping bamboo.

[0092] Example 4

[0093] 1) Preparation of humus soil: Chop corn stalks into 1 cm segments, crush cow dung and chicken dung into particles with an outer diameter of 2.2 cm, then mix corn stalks, cow dung and chicken dung in a mass ratio of 4:1, add soil (the mass ratio of soil to cow dung and chicken dung is 12:1.5) and water, mix again, control the moisture content of the mixture to 68%, and adjust the weight of the mixture to 250 g / m 3 The microbial agent is inoculated in an amount of (a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:1.8), and fermentation is carried out by composting. The height of the pile is 45 cm, and the pile is turned once at 9:00 am every day until the fermentation temperature of the pile remains constant, thereby obtaining humus soil;

[0094] 2) Preparation of charcoal: Rice husks, peanut shells, and corn stalks were pulverized to a particle size of 6.5 mm, dried at 60°C to a moisture content of 14%, and then carbonized in a carbonization furnace at 290°C for 5.5 hours to obtain charcoal;

[0095] 3) Humus soil, charcoal, ceramsite (particle size 22 μm), river sand (particle size 0.8 mm), peppermint oil, and nitrogen and potassium fertilizers were mixed in a blender at a mass ratio of 42:10:16:12:3:2 at a speed of 320 r / min and a temperature of 25°C for 45 min to obtain a muddy cutting medium for clumping bamboo.

[0096] Example 5

[0097] 1) Preparation of humus soil: Chop wheat straw into 2 cm small segments and crush cow dung into particles with an outer diameter of 3 cm. Then mix wheat straw and cow dung in a mass ratio of 3:2. At the same time, add soil (the mass ratio of soil to cow dung is 10:1) and water, mix again, control the water content of the mixture to 65%, and adjust the weight of the mixture to 260 g / m 3 The microbial agent is inoculated in an amount of (a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:1.5), and fermentation is carried out by composting. The height of the pile is 48 cm, and the pile is turned once at 9:00 am every day until the fermentation temperature of the pile remains constant, thereby obtaining humus soil;

[0098] 2) Preparation of charcoal: Rice husks, peanut shells, and wheat straw were pulverized to a particle size of 6.8 mm, dried at 55°C to a moisture content of 15%, and then carbonized in a carbonization furnace at 295°C for 6.5 hours to obtain charcoal;

[0099] 3) Humus soil, charcoal, perlite (particle size 20 μm), river sand (particle size 0.6 mm), peppermint oil, and nitrogen and potassium fertilizers were mixed in a blender at a mass ratio of 52:10.5:18:14:3.5:2.5 at a speed of 380 r / min and a temperature of 25°C for 40 min to obtain a muddy cutting medium for clumping bamboo.

[0100] Comparative Example 1

[0101] The parameters in the humus soil preparation process in step 1) of Example 1 were modified, specifically: the mass ratio of corn straw to cow dung was changed to 8:1, the mass ratio of soil to cow dung was changed to 2:1, and the inoculum amount of microbial agent was changed to 80 g / m 3 , other conditions remain unchanged, and the mud cutting medium for clumping bamboo is obtained.

[0102] Comparative Example 2

[0103] The parameters in the charcoal preparation process of step 2) in Example 1 were modified, specifically: the carbonization temperature was modified to 500° C., the carbonization time was modified to 2 h, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0104] Comparative Example 3

[0105] The humus soil in Example 1 was omitted, and other conditions remained unchanged to obtain a bamboo clumping mud cutting medium.

[0106] Comparative Example 4

[0107] The charcoal in Example 1 was omitted, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0108] Comparative Example 5

[0109] The perlite and nitrogen-potassium fertilizers in step 3) of Example 1 were omitted, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0110] Comparative Example 6

[0111] The mixing speed in step 3) of Example 1 was modified to 600 r / min, the temperature was modified to 50° C., the time was modified to 15 min, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0112] Comparative Example 7

[0113] The mixing speed in step 3) of Example 1 was modified to 100 r / min, the temperature was modified to 5° C., the time was modified to 90 min, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0114] Comparative Example 8

[0115] The mass ratio of humus, charcoal, perlite, river sand, tea tree oil and nitrogen-potassium fertilizer in step 3) of Example 1 was modified to 20:40:8:30:0.5:0.2, while other conditions remained unchanged, to obtain a clumping bamboo mud cutting medium.

[0116] Comparative Example 9

[0117] The mass ratio of humus soil, charcoal, perlite, river sand, tea tree oil and nitrogen-potassium fertilizer in step 3) of Example 1 was modified to 80:5:8:20:5:6, while other conditions remained unchanged, to obtain a clumping bamboo mud cutting medium.

[0118] Comparative Example 10

[0119] The tea tree oil and river sand in step 3) of Example 1 were omitted, and other conditions remained unchanged to obtain a clumping bamboo mud cutting medium.

[0120] Application Example 1

[0121] The bamboo cutting matrix prepared in Example 1 was used to carry out a cutting propagation experiment on green bamboo, comprising the following steps:

[0122] (1) Establishing a seedbed

[0123] Build a seedbed with a length of 25m, a width of 2m and a height of 1m as a cutting propagation area. Lay 8cm of coal slag and 25cm of pebbles from bottom to top. Mix the cutting medium and the original soil in a mass ratio of 1:0.6 and cover the pebbles with a thickness of 10cm. Disinfect the seedbed and water it thoroughly.

[0124] (2) Cutting collection and processing

[0125] Select healthy, pest-free, vigorous, current-year semi-lignified green bamboo branches as cuttings. Cut the cuttings into 20 cm in length, leaving three leaves on the top and cutting the bottom into an oblique cut (about 45 degrees), keeping the cut flat. Then soak the cuttings in a 500 mg / L carbendazim solution for 15 minutes to disinfect the cuttings, then air-dry for 20 minutes before using them for cuttings.

[0126] (3) Cutting

[0127] Before cutting, use a small wooden stick slightly thicker than the diameter of the cutting to make a hole in the seedbed, then insert the treated cutting along the hole. The cutting depth is 4cm, the plant spacing is 5cm, and the row spacing is 5cm. Immediately after cutting, water thoroughly, compact the cutting and the substrate around the hole, and maintain the relative humidity of the seedbed above 95%;

[0128] (4) Post-insertion management

[0129] After cutting, control the ground temperature at 20℃ and the air temperature at 25℃. Shade the seedlings throughout the entire process with a shading rate of 60%. Use automatic spraying to cool and retain moisture, and control the air humidity at 90%. Rooting will occur 15-18 days after cutting. After each cutting has 3-5 roots up to 3-4 cm long, transplant them, control the plant spacing at 15 cm and the row spacing at 20 cm, and cultivate for 20 days.

[0130] Application Example 2

[0131] The clumping bamboo mud cutting medium prepared in Example 2 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that in Application Example 1.

[0132] Application Example 3

[0133] The clumping bamboo mud cutting medium prepared in Example 3 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that in Application Example 1.

[0134] Application Example 4

[0135] The clumping bamboo mud cutting medium prepared in Example 4 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that in Application Example 1.

[0136] Application Example 5

[0137] The bamboo cutting matrix prepared in Example 5 was used to carry out a cutting propagation experiment on green bamboo. The specific test method was the same as that in Application Example 1.

[0138] Application Example 6

[0139] The clumping bamboo mud cutting substrate prepared in Comparative Example 1 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0140] Application Example 7

[0141] The clumping bamboo mud cutting substrate prepared in Comparative Example 2 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0142] Application Example 8

[0143] The clumping bamboo mud cutting substrate prepared in Comparative Example 3 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0144] Application Example 9

[0145] The clumping bamboo mud cutting substrate prepared in Comparative Example 4 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0146] Application Example 10

[0147] The clumping bamboo mud cutting substrate prepared in Comparative Example 5 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0148] Application Example 11

[0149] The clumping bamboo mud cutting substrate prepared in Comparative Example 6 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0150] Application Example 12

[0151] The clumping bamboo mud cutting substrate prepared in Comparative Example 7 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0152] Application Example 13

[0153] The clumping bamboo mud cutting substrate prepared in Comparative Example 8 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0154] Application Example 14

[0155] The clumping bamboo mud cutting substrate prepared in Comparative Example 9 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0156] Application Example 15

[0157] The clumping bamboo mud cutting substrate prepared in Comparative Example 10 was selected to carry out a cutting propagation test of green bamboo. The specific test method was the same as that of Application Example 1.

[0158] After 14 days, the growth of the green bamboo in Examples 1-15 was statistically analyzed, and the statistical results are shown in Table 1.

[0159] Table 1 Growth of green bamboo

[0160]

[0161]

[0162] As shown in Table 1, the bamboo cutting medium of the present invention has a reasonable ratio of components. Compared with traditional substrates, it has the advantages of good air permeability, strong water regulation ability, suitable pH value, comprehensive nutrition, and inhibition of pathogenic contamination. It provides an ideal substrate for bamboo cutting seedling cultivation and effectively improves the rooting rate, survival rate and growth rate of cuttings.

[0163] The clumping bamboo mud cutting medium of the present invention adopts a simple and efficient preparation process, adopts processes such as composting fermentation and carbonization treatment, thereby ensuring the excellent quality of the medium. Various operations and controls in the preparation process are easy to implement, thus providing feasibility for large-scale production.

[0164] It can be seen from Application Examples 1 and 6 that the present invention obtains a muddy substrate suitable for the cutting propagation of clumping bamboo by optimizing the parameters involved in the humus soil preparation process.

[0165] It can be seen from Application Examples 1 and 7 that the present invention obtains a muddy substrate suitable for the cutting propagation of clumping bamboo by optimizing the parameters involved in the charcoal preparation process.

[0166] It can be seen from Application Examples 1 and 8 that the humus soil prepared by the present invention can provide rich nutrients for clumping bamboo, improve the comprehensive properties of the mud matrix, enhance its air permeability, nutrient content and moisture regulation ability, and thus promote the healthy growth of bamboo seedlings.

[0167] It can be seen from Application Examples 1 and 9 that the charcoal prepared by the present invention plays multiple roles in the muddy matrix of clumping bamboo, such as improving soil structure, enhancing drainage and air permeability, promoting root growth, and absorbing harmful substances, which helps to improve the growth quality and survival rate of clumping bamboo.

[0168] It can be seen from Application Examples 1 and 10 that the combined use of fillers and nitrogen-potassium fertilizers in the bamboo clumping matrix of the present invention can effectively optimize the physical and chemical properties of the bamboo clumping matrix and provide an environment more suitable for bamboo clumping growth.

[0169] It can be seen from Application Examples 1 and 11-12 that by adjusting the mixing parameters of the substrate components, the substrate can be optimized to meet the growth environment requirements of clumping bamboo and improve its growth rate, survival rate and ability to resist diseases and pests.

[0170] It can be seen from Application Examples 1 and 13-14 that the components in the mud cutting medium of the present invention are reasonably matched and can provide comprehensive nutrients for clumping bamboo, enable it to take root quickly, and significantly improve its rooting rate and growth rate.

[0171] Through Application Examples 1 and 15, it can be seen that the combined use of antimicrobial substances and river sand can effectively optimize the performance of the mud substrate, improve the growth and health of clumping bamboo, and increase its growth rate, rooting rate and survival rate.

[0172] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bamboo clumping mud cutting medium, characterized in that: Contains the following components in parts by weight: 40-55 parts of humus soil, 10-12 parts of charcoal, 15-20 parts of filler, 8-16 parts of river sand, 2-4 parts of antibacterial agent, and 1.5-3 parts of nitrogen and potassium fertilizer.

2. The bamboo clumping mud cutting medium according to claim 1, characterized in that The humus soil is formed by composting and fermenting plant residues and animal excrement.

3. The bamboo clumping mud cutting medium according to claim 2, characterized in that The plant residues are one or more of leaves, grass and crop straw; The animal excrement is one or more of cow dung, horse dung and chicken dung; The mass ratio of the plant residues to animal feces is 3-4:1-2.

4. The bamboo clumping mud cutting medium according to claim 1, characterized in that The charcoal is made from raw materials through carbonization treatment; The raw materials include the following components in parts by weight: 5 to 10 parts of rice husks, 8 to 10 parts of peanut shells, and 10 to 12 parts of corn stalks; The temperature of the carbonization treatment is 280-320° C., and the time of the carbonization treatment is 5-8 hours.

5. The clumping bamboo mud cutting medium according to claim 1, characterized in that The filler is one or more of perlite, expanded zircon, expanded vermiculite and ceramsite; The particle size of the filler is 15 to 25 μm.

6. The bamboo clumping mud cutting medium according to claim 1, characterized in that: The particle size of the river sand is 0.5-1 mm.

7. The bamboo clumping mud cutting medium according to claim 1, characterized in that: The antibacterial substance is a natural plant extract; The natural plant extract is tea tree oil, peppermint oil or clove oil.

8. The process for preparing the clumping bamboo mud cutting medium according to any one of claims 1 to 7, characterized in that: The following steps are included: 1) Preparation of humus soil: chop plant residues into small pieces of 1-2 cm, crush animal feces into particles with an outer diameter of 2-3 cm, then mix the plant residues and animal feces according to the proportion, add soil and water to the mixture, control the water content of the mixture to 60-70%, and adjust the water content to 200-300 g / m 3 The microbial agent is inoculated in an amount of , and fermentation is carried out by composting. The height of the pile is 30 to 50 cm, and the pile is turned once a day until the fermentation temperature of the pile remains constant to obtain humus soil; 2) Preparation of charcoal: The raw material is crushed to a particle size of 6 to 8 mm, dried to a moisture content of 10 to 15%, and then carbonized in a carbonization furnace at a temperature of 280 to 320° C. for 5 to 8 hours to obtain charcoal; 3) Compound substrate: humus soil, charcoal, filler, river sand, antibacterial substances and nitrogen and potassium fertilizers are mixed in proportion to obtain a muddy cutting substrate for clumping bamboo.

9. The preparation process according to claim 8, characterized in that: Step 1) The microbial agent is a mixture of Bacillus and yeast, with a mass ratio of Bacillus to yeast of 1:1-2; The mass ratio of the soil to animal feces is 8-12:1-2.

10. The preparation process according to claim 9, characterized in that: Step 3) The mixing speed is 300-400 r / min, the mixing temperature is 20-30° C., and the mixing time is 35-50 min.

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