Nutrient medium for shortening growth cycle of astragalus sinicus

Abstract

The invention discloses a nutrient medium for shortening the growth cycle of astragalus sinicus, and belongs to the technical field of agricultural planting. The nutrient medium is prepared from the following raw materials in parts by mass: 18 to 25 parts of humus soil, 12 to 18 parts of turfy soil, 6 to 10 parts of vermiculite, 10 to 14 parts of perlite, 12 to 15 parts of organic fertilizer, 2 to 5 parts of microelement fertilizer, 1 to 3 parts of growth regulator and 22 to 28 parts of river sand, and all the components are mixed according to a specific proportion. Through interaction of the raw materials, such as humus soil, turfy soil and vermiculite, the water-retaining property and air permeability of soil can be improved, the organic fertilizer can provide nutrients and energy needed by plants, the microelement fertilizer can supplement microelements needed by the plants, and the growth regulator can stimulate growth and development of the plants, so that the purpose of shortening the growth cycle of the astragalus sinicus is achieved. Besides, the nutrient medium is simple in preparation process, wide in raw material source, low in price and easy to obtain, and has remarkable economic benefits and social benefits in the field of astragalus sinicus planting.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural planting, and in particular relates to a nutrient matrix for shortening the growth cycle of astragalus. Background Art

[0002] Chinese milk vetch is a common vegetable and herb widely used in cooking and medicine around the world. However, its growth cycle usually takes several months or even more than a year, which brings great challenges to planting and harvesting. Therefore, how to shorten the growth cycle of Chinese milk vetch, increase yield and shorten production time has always been one of the hot issues in the field of agricultural production.

[0003] Traditional agricultural production methods mainly rely on controlling factors such as temperature, humidity and light to promote plant growth and development. However, this method has many limitations, such as not being able to completely avoid the occurrence of pests and diseases, and not being able to guarantee the consistency of plant quality. In addition, as consumers pursue a healthier and greener lifestyle, traditional agricultural production methods can no longer meet market demand.

[0004] In order to solve these problems, people have begun to try to use various new agricultural production technologies and methods. Among them, the preparation and use of nutrient matrix is ​​considered to be a very promising method. Nutrient matrix is ​​a solid substance containing all or part of the necessary nutrients required by plants. It can provide the nutrients required for plant growth and development, while also controlling the release rate of nutrients required by plants and reducing the occurrence of diseases and insect pests. Therefore, the use of nutrient matrix is ​​widely used in the agricultural field.

[0005] However, there are many types of nutrient matrices on the market, and different types of nutrient matrices have different applicability to different crops. In addition, existing nutrient matrix formulas are usually universal and cannot be personalized and optimized for the needs of specific crops. This leads to some problems, such as some crops may not be able to fully absorb and utilize the nutrients in the nutrient matrix, affecting yield and quality. Summary of the invention

[0006] In order to overcome the limitations of the prior art, the present invention proposes a nutrient matrix for shortening the growth period of Chinese milk vetch to meet the needs of modern agricultural production and provide a reference for the research and development of other crops.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] One of the purposes of the present invention is to provide a nutrient matrix for shortening the growth period of astragalus, comprising the following raw materials in parts by weight: 15-30 parts of humus, 10-20 parts of peat soil, 6-12 parts of vermiculite, 8-15 parts of perlite, 10-15 parts of organic fertilizer, 2-6 parts of trace element fertilizer, 1-3 parts of growth regulator and 20-30 parts of river sand.

[0009] Humus soil contains rich organic matter and microorganisms, which can provide nutrients and water for plants and improve soil structure. Peat soil has good water retention and aeration, which can keep the soil moist and prevent caking. Vermiculite has good drainage performance and can help plant roots breathe. Perlite has high porosity and adsorption capacity, which can increase soil water retention and air permeability. River sand provides a good growth environment for astragalus, which helps plants grow and develop faster, thus shortening the growth cycle of astragalus. Organic fertilizer contains rich organic matter, which can provide nutrients and energy for plants. Trace element fertilizers include elements such as boron, zinc, copper, iron and manganese, which are essential for plant growth and development. Growth regulators can stimulate plant growth and development, promote branching and chlorophyll synthesis, and thus improve photosynthesis efficiency. By combining these raw materials with different functions, a synergistic effect can be achieved. For example, humus, peat soil, vermiculite and other materials can increase the water retention and air permeability of the soil, which is beneficial to the root development and nutrient absorption of plants; organic fertilizers can provide the nutrients and energy required by plants, and trace element fertilizers can supplement the trace elements required by plants; growth regulators can stimulate the growth and development of plants and promote the rapid growth of plants. Therefore, this formula can interact in a variety of ways to achieve the effect of promoting the growth of astragalus, thereby shortening its growth cycle.

[0010] Furthermore, the nutrient matrix includes the following raw materials in parts by mass: 18-25 parts of humus, 12-18 parts of peat soil, 6-10 parts of vermiculite, 10-14 parts of perlite, 12-15 parts of organic fertilizer, 2-5 parts of trace element fertilizer, 1-3 parts of growth regulator and 22-28 parts of river sand.

[0011] Furthermore, the organic fertilizer is fermented from livestock and poultry manure.

[0012] Furthermore, the specific steps of the fermentation include: mixing livestock and poultry manure with fermentation bacteria in a mass ratio of 100:(1-3), and fermenting for 15-20 days.

[0013] Furthermore, the trace element fertilizer includes boron, zinc, copper, iron and manganese.

[0014] Furthermore, the mass ratio of the boron, zinc, copper, iron and manganese elements is (1-3):(2-5):(0.5-1.5):(0.5-1.5):(0.3-0.8).

[0015] Furthermore, the growth regulators include gibberellins, indoleacetic acid and naphthylacetic acid.

[0016] Furthermore, the mass ratio of the gibberellins, indoleacetic acid and naphthylacetic acid is (1-3): (2-5): (3-7).

[0017] The second object of the present invention is to provide a method for preparing a nutrient matrix for shortening the growth cycle of astragalus, comprising the following steps: weighing raw materials according to mass, mixing humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0018] The third object of the present invention is to provide a nutrient matrix for shortening the growth period of Chinese milk vetch and its application in the field of Chinese milk vetch cultivation.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The nutrient matrix of the present invention effectively shortens the growth period of the Chinese milk vetch through the interaction between different raw materials. In addition, the nutrient matrix of the present invention has high application value in the field of Chinese milk vetch planting because of its wide source of raw materials, simple production process and low price. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0022] It should be understood that the terms described in the present invention are only for describing special embodiments and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. Each smaller range between the intermediate value in any stated value or stated range and any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0023] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0024] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present invention description and examples are exemplary only.

[0025] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0026] The embodiment of the present invention provides a nutrient matrix for shortening the growth cycle of astragalus, comprising the following raw materials in parts by weight: 15-30 parts of humus, 10-20 parts of peat soil, 6-12 parts of vermiculite, 8-15 parts of perlite, 10-15 parts of organic fertilizer, 2-6 parts of trace element fertilizer, 1-3 parts of growth regulator and 20-30 parts of river sand.

[0027] In some optional embodiments of the present invention, the nutrient matrix includes the following raw materials in parts by mass: 18-25 parts of humus, 12-18 parts of peat soil, 6-10 parts of vermiculite, 10-14 parts of perlite, 12-15 parts of organic fertilizer, 2-5 parts of trace element fertilizer, 1-3 parts of growth regulator and 22-28 parts of river sand.

[0028] In some optional embodiments of the present invention, the nutrient matrix contains 18 parts, 20 parts, 25 parts or any range between the aforementioned ranges of humus.

[0029] In some optional embodiments of the present invention, the nutrient matrix contains 12 parts, 16 parts, 18 parts or any range between the aforementioned ranges of peat soil.

[0030] In some optional embodiments of the present invention, the nutrient matrix contains 6 parts, 8 parts, 10 parts or any range of values ​​between the aforementioned ranges of vermiculite.

[0031] In some optional embodiments of the present invention, the nutrient matrix contains 10 parts, 12 parts, 14 parts or any range between the aforementioned ranges of perlite.

[0032] In some optional embodiments of the present invention, the nutrient matrix contains 12 parts, 13 parts, 15 parts or any range of organic fertilizers between the aforementioned ranges.

[0033] In some optional embodiments of the present invention, the nutrient matrix contains 1 part, 3 parts, 5 parts or any range of trace element fertilizers between the aforementioned ranges.

[0034] In some optional embodiments of the present invention, the nutrient medium contains 1 part, 2 parts, 3 parts or any range between the aforementioned ranges of growth regulators.

[0035] In some optional embodiments of the present invention, the nutrient matrix contains 22 parts, 25 parts, 28 parts or any range between the aforementioned values ​​of river sand.

[0036] In some embodiments, the organic fertilizer is fermented from livestock and poultry manure. The specific steps of the fermentation include: mixing the livestock and poultry manure with the fermentation agent in a mass ratio of 100: (1-3), and fermenting for 15-20 days. Exemplarily, in the following preferred embodiments of the present invention, the livestock and poultry manure and the fermentation agent are mixed in a mass ratio of 100: 1, 100: 2, 100: 3 or any range between the foregoing ratios.

[0037] In other optional embodiments, the organic fertilizer is a decomposed organic fertilizer, and the preparation method of the decomposed organic fertilizer is: the crop straw is laid flat once, with a thickness of about 20-30 cm. Afterwards, it starts to be gradually piled up, and finally forms a conical compost pile with a top diameter of about 80-100 cm. After the compost pile is built, it is covered with a film or other waterproof materials to prevent water evaporation. Then, it is stepped on every 1-2 weeks to circulate the air inside the compost, which is conducive to the decomposition of microorganisms. In the whole composting process, the changes of the compost, such as color, smell, temperature, etc., should be closely observed, so as to find problems in time and make adjustments. Generally speaking, the compost can meet the planting requirements after a decomposition period of 4 to 6 months. Compost can provide nutrients such as nitrogen, phosphorus, potassium required for the growth of astragalus.

[0038] In some embodiments, the trace element fertilizer includes boron, zinc, copper, iron and manganese. The mass ratio of the boron, zinc, copper, iron and manganese is (1-3): (2-5): (0.5-1.5): (0.5-1.5): (0.3-0.8). Exemplarily, in the following preferred embodiments of the present invention, the boron, zinc, copper, iron and manganese are mixed in a mass ratio of 2: 3.5: 1: 1: 0.6, 1: 2: 1.5: 0.5: 0.8, 3: 5: 0.5: 1.5: 0.3 or any range between the foregoing ratios.

[0039] In some embodiments, the growth regulator includes gibberellins, indoleacetic acid and naphthaleneacetic acid. The mass ratio of the gibberellins, indoleacetic acid and naphthaleneacetic acid is (1-3): (2-5): (3-7). Exemplarily, in the following preferred embodiments of the present invention, the gibberellins, indoleacetic acid and naphthaleneacetic acid are mixed in a mass ratio of 2:3:5, 1:5:3, 3:2:7 or any range between the foregoing ratios.

[0040] In other embodiments, the growth regulator is a mixture of gibberellins and cytokinins, and the mass ratio of the two is (2-4): (0.5-1.5). Mixing gibberellins and cytokinins in a specific ratio can promote the division and elongation of astragalus cells and accelerate the growth rate.

[0041] In a preferred embodiment, when the growth regulator is composed of gibberellins and cytokinins, the nutrient matrix further comprises a water-soluble polysaccharide; the amount of the water-soluble polysaccharide is equal to that of the growth regulator. The water-soluble polysaccharide is compounded by sodium alginate and carrageenan at a ratio of 1:1.5. Mixing sodium alginate and carrageenan in a specific ratio can enhance the water absorption capacity and stress resistance of astragalus cells, thereby improving their growth stability.

[0042] The "room temperature" in the present invention refers to 20-30°C unless otherwise specified.

[0043] The "parts" described in the present invention, unless otherwise specified, refer to parts by mass.

[0044] The raw materials used in the present invention are all purchased from the market, and the bacterial agents used are all purchased through conventional commercial channels. Among them, Bacillus subtilis was purchased from Jinan Herui Biotechnology Co., Ltd., with an effective substance content of 10 billion / g; Bacillus coagulans was purchased from Zhuhai Wenqi Biotechnology Co., Ltd., with an effective substance content of 99%.

[0045] The technical solution of the present invention is further illustrated by the following embodiments.

[0046] Example 1

[0047] A nutrient matrix for shortening the growth cycle of astragalus sinensis comprises the following raw materials in parts by mass: 20 parts of humus, 16 parts of peat soil, 8 parts of vermiculite, 12 parts of perlite, 13 parts of organic fertilizer, 3 parts of trace element fertilizer, 2 parts of growth regulator and 25 parts of river sand.

[0048] Among them: the trace element fertilizer contains boron, zinc, copper, iron and manganese, and the mass ratio of boron, zinc, copper, iron and manganese is 2:3.5:1:1:0.6;

[0049] The growth regulator comprises gibberellin, indoleacetic acid and naphthylacetic acid, and the mass ratio of gibberellin, indoleacetic acid and naphthylacetic acid is 2:3:5.

[0050] A method for preparing a nutrient matrix for shortening the growth period of Chinese milk vetch comprises the following steps:

[0051] (1) Preparation of organic fertilizer: livestock and poultry manure and fermentation agent (a mixture of Bacillus subtilis and Bacillus coagulans, with a mass ratio of 1:1) were mixed in a mass ratio of 100:2 and fermented for 18 days in a conventional manner.

[0052] (2) Weighing raw materials by mass, mixing humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0053] Example 2

[0054] A nutrient matrix for shortening the growth cycle of astragalus sinensis comprises the following raw materials in parts by mass: 18 parts of humus, 18 parts of peat soil, 6 parts of vermiculite, 14 parts of perlite, 12 parts of organic fertilizer, 5 parts of trace element fertilizer, 1 part of growth regulator and 22 parts of river sand.

[0055] Wherein: the trace element fertilizer contains boron, zinc, copper, iron and manganese, and the mass ratio of boron, zinc, copper, iron and manganese is 1:2:1.5:0.5:0.8;

[0056] The growth regulator comprises gibberellin, indoleacetic acid and naphthylacetic acid, and the mass ratio of gibberellin, indoleacetic acid and naphthylacetic acid is 1:5:3.

[0057] A method for preparing a nutrient matrix for shortening the growth period of Chinese milk vetch comprises the following steps:

[0058] (1) Preparation of organic fertilizer: livestock and poultry manure and fermentation agent (a mixture of Bacillus subtilis and Bacillus coagulans, with a mass ratio of 1:1) were mixed in a mass ratio of 100:1 and fermented for 20 days in a conventional manner.

[0059] (2) Weighing raw materials by mass, mixing humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0060] Example 3

[0061] A nutrient matrix for shortening the growth cycle of astragalus sinensis comprises the following raw materials in parts by mass: 25 parts of humus, 12 parts of peat soil, 10 parts of vermiculite, 10 parts of perlite, 15 parts of organic fertilizer, 1 part of trace element fertilizer, 3 parts of growth regulator and 28 parts of river sand.

[0062] Wherein: the trace element fertilizer contains boron, zinc, copper, iron and manganese, and the mass ratio of boron, zinc, copper, iron and manganese is 3:5:0.5:1.5:0.3;

[0063] The growth regulator comprises gibberellin, indoleacetic acid and naphthylacetic acid, and the mass ratio of gibberellin, indoleacetic acid and naphthylacetic acid is 3:2:7.

[0064] A method for preparing a nutrient matrix for shortening the growth period of Chinese milk vetch comprises the following steps:

[0065] (1) Preparation of organic fertilizer: livestock and poultry manure and fermentation agent (a mixture of Bacillus subtilis and Bacillus coagulans, with a mass ratio of 1:1) were mixed in a mass ratio of 100:3 and fermented for 15 days in a conventional manner.

[0066] (2) Weighing raw materials by mass, mixing humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0067] Comparative Example 1

[0068] The same as Example 1, except that the growth regulator is a mixture of indoleacetic acid and naphthylacetic acid in a mass ratio of 1:1, and the total amount added is still 2 parts.

[0069] Comparative Example 2

[0070] The same as Example 1, except that the mass of peat soil is replaced by humus soil, and the mass of vermiculite is replaced by perlite, that is, the nutrient matrix includes the following raw materials in parts by mass: 46 parts of humus soil, 20 parts of perlite, 13 parts of organic fertilizer, 3 parts of trace element fertilizer, 2 parts of growth regulator and 25 parts of river sand.

[0071] Comparative Example 3

[0072] The same as Example 1, except that the nutrient matrix includes the following raw materials in parts by mass: 10 parts of humus, 25 parts of peat soil, 10 parts of vermiculite, 20 parts of perlite, 20 parts of organic fertilizer, 8 parts of trace element fertilizer, 5 parts of growth regulator and 18 parts of river sand.

[0073] Application Example 1

[0074] The nutrient matrix prepared by Example 1-3 and Comparative Example 1-3 is subjected to application experiment, wherein, with Fujian common soil as control group, the specific method is: select the seeds of No. 1 Chinese Milk vetch with full grain, uniform size, no pests and diseases and sterilized by Xiangzi for sowing, the container is a plastic flowerpot, the upper diameter of the flowerpot is 13.5cm, the lower diameter is 10cm, and the basin is 14cm high. Each treatment is sown 10 pots, 10 seeds are sown in each pot, and each treatment is repeated 5 times, and water is sprayed regularly at 8 and 17 o'clock every day. After sowing, the 8th day begins to record the germination situation (with the radicle obviously breaking through the seed coat as the germination standard), and 16 o'clock every day is observed and recorded, and 7 days are observed continuously. Determine the germination rate, plant height, root length, leaf area and biomass after sowing on the 40th day.

[0075] Germination rate = n / N × 100% (n is the number of germinations; N is the total number of seeds);

[0076] Plant height: Lay the plant flat on paper and measure the distance from the top of the seedling to the base of the stem using a vernier caliper;

[0077] Root length: the distance from the neck of the main root to the lowest end, measured with a vernier caliper;

[0078] Leaf area = leaf area index × leaf length × maximum leaf width, calculated using Matlab image processing;

[0079] Biomass fresh weight: measured using a 0.1 mg electronic balance;

[0080] Biomass dry weight: After drying at 70℃, measure using an electronic balance.

[0081] The experimental data were processed using Excel 2010 and SPSS 20.0 software, and variance analysis and significance analysis were performed.

[0082] Germination rate: If the germination rate of astragalus is significantly improved after using the nutrient matrix, it means that this matrix has a positive effect on seed germination. This is because the nutrients in the matrix are more suitable for the nutritional needs of the plant, making it easier for the plant to change from dormancy to growth.

[0083] Plant height: By measuring the height of the astragalus plant, you can understand the overall growth of the plant. If the average plant height of astragalus increases after using the nutrient matrix, it means that this matrix can promote the vertical growth of the plant, thereby shortening the growth cycle.

[0084] Root length: By measuring the root length of astragalus, we can understand the root development of the plant. If the average root length of astragalus increases after using the nutrient matrix, it means that this matrix is ​​conducive to the deep absorption and utilization of nutrients by the plant, thereby reducing the dependence on the aboveground part, thus saving growth time.

[0085] Leaf area: Leaf area is an indicator to measure the photosynthetic capacity of plants. If the leaf area of ​​astragalus increases after using the nutrient matrix, it means that this matrix can improve the photosynthetic efficiency of the plant, thereby promoting the rapid growth of the plant.

[0086] Biomass: Biomass is the total amount of organic matter in a plant, and is also an important indicator for measuring plant growth and development. If the biomass of Astragalus increases after using a nutrient matrix, it means that this matrix can improve the plant's growth and development ability, thereby shortening the growth cycle.

[0087] The result data are shown in Table 1.

[0088] Table 1 Indicators of Chinese astragalus planted in different substrates

[0089]

[0090]

[0091] As can be seen from Table 1, the germination rate of Chinese asparagus planted with the nutrient matrix prepared by Examples 1-3 of the present invention is significantly higher than that of the control group. At the same time, the plant height, root length, leaf area and biomass are significantly different from those of the control group. This shows that the matrix provided by the present invention can shorten the growth cycle of Chinese asparagus. Compared with the nutrient matrix prepared by Comparative Examples 1-3, although it is improved over the control group, its effect is still not significant enough compared with the embodiment.

[0092] Example 4

[0093] A nutrient matrix for shortening the growth cycle of astragalus sinensis comprises the following raw materials in parts by mass: 20 parts of humus, 16 parts of peat soil, 8 parts of vermiculite, 12 parts of perlite, 13 parts of organic fertilizer, 3 parts of trace element fertilizer, 2 parts of growth regulator and 25 parts of river sand.

[0094] Among them: the trace element fertilizer contains boron, zinc, copper, iron and manganese, and the mass ratio of boron, zinc, copper, iron and manganese is 2:3.5:1:1:0.6;

[0095] The growth regulator is a mixture of gibberellins and cytokinins, and the mass ratio of the two is 3:1.

[0096] A method for preparing a nutrient matrix for shortening the growth period of Chinese milk vetch comprises the following steps:

[0097] (1) Preparation of organic fertilizer: The corn stalks are laid flat at one time with a thickness of about 20-30 cm. After that, they are gradually piled up to form a conical compost pile with a top diameter of about 80-100 cm. After the compost pile is built, it is covered with a film to prevent water evaporation. Then, it is compacted every 1-2 weeks to allow air circulation inside the compost, which is conducive to the decomposition of microorganisms. During the entire composting process, the changes in the compost are closely observed, and it is prepared after 4 months of decomposition.

[0098] (2) Weighing raw materials by mass, mixing humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0099] Example 5

[0100] A nutrient matrix for shortening the growth cycle of astragalus, comprising the following raw materials in parts by mass: 20 parts of humus, 16 parts of peat soil, 8 parts of vermiculite, 12 parts of perlite, 13 parts of organic fertilizer, 3 parts of trace element fertilizer, 2 parts of growth regulator, water-soluble polysaccharide (compounded by sodium alginate and carrageenan at a ratio of 1:1.5) and 25 parts of river sand.

[0101] Among them: the trace element fertilizer contains boron, zinc, copper, iron and manganese, and the mass ratio of boron, zinc, copper, iron and manganese is 2:3.5:1:1:0.6;

[0102] The growth regulator is a mixture of gibberellins and cytokinins, and the mass ratio of the two is 3:1.

[0103] A method for preparing a nutrient matrix for shortening the growth period of Chinese milk vetch comprises the following steps:

[0104] (1) Preparation of organic fertilizer: The corn stalks are laid flat at one time with a thickness of about 20-30 cm. After that, they are gradually piled up to form a conical compost pile with a top diameter of about 80-100 cm. After the compost pile is built, it is covered with a film to prevent water evaporation. Then, it is compacted every 1-2 weeks to allow air circulation inside the compost, which is conducive to the decomposition of microorganisms. During the entire composting process, the changes in the compost are closely observed, and it is prepared after 4 months of decomposition.

[0105] (2) Weighing raw materials by mass, mixing humus soil, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; adding organic fertilizer, trace element fertilizer, growth regulator and water-soluble polysaccharide substance to the matrix mixture in sequence, stirring evenly to obtain a nutrient matrix.

[0106] Application Example 2

[0107] The effect of the nutrient matrix prepared in Example 4-5 was verified by the same method as in Application Example 1. The results are shown in Table 2.

[0108] Table 2 Indicators of Chinese astragalus planted in different substrates

[0109] Example 4 Example 5 Control group Germination rate (%) 96 95 52 Plant height(cm) 7.14±0.36 7.02±0.31 4.07±0.21 Root length (cm) 8.22±0.02 8.26±0.19 5.44±1.42 Leaf area (cm) 4.02±0.43 3.99±0.27 2.02±0.45 Biomass fresh weight (g) 0.298±0.02 0.289±0.04 0.081±0.03 Biomass dry weight (g) 0.056±0.02 0.053±0.02 0.015±0.01

[0110] As can be seen from Table 2, the germination rate, plant height, root length, leaf area and biomass of Chinese asparagus planted using the nutrient matrix prepared in Examples 4 and 5 of the present invention are significantly different from those of the control group, indicating that the matrix provided by the present invention can shorten the growth cycle of Chinese asparagus.

[0111] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A nutrient matrix for shortening the growth period of Astragalus sinensis, characterized in that: The invention comprises the following raw materials in parts by weight: 15-30 parts of humus soil, 10-20 parts of peat soil, 6-12 parts of vermiculite, 8-15 parts of perlite, 10-15 parts of organic fertilizer, 2-6 parts of trace element fertilizer, 1-3 parts of growth regulator and 20-30 parts of river sand.

2. The nutrient medium for shortening the growth period of Chinese milk vetch according to claim 1, characterized in that: The nutrient matrix comprises the following raw materials in parts by weight: 18-25 parts of humus, 12-18 parts of peat soil, 6-10 parts of vermiculite, 10-14 parts of perlite, 12-15 parts of organic fertilizer, 2-5 parts of trace element fertilizer, 1-3 parts of growth regulator and 22-28 parts of river sand.

3. The nutrient medium for shortening the growth period of Chinese Milkvetch according to claim 1 or 2, characterized in that: The organic fertilizer is made by fermenting livestock and poultry excrement.

4. The nutrient medium for shortening the growth period of Chinese milk vetch according to claim 3, characterized in that: The specific steps of the fermentation include: mixing livestock and poultry manure with a fermentation agent in a mass ratio of 100:(1-3), and fermenting for 15-20 days.

5. The nutrient medium for shortening the growth period of Chinese Milkvetch according to claim 1 or 2, characterized in that: The trace element fertilizer includes boron, zinc, copper, iron and manganese elements.

6. The nutrient medium for shortening the growth period of Chinese milk vetch according to claim 5, characterized in that: The mass ratio of the boron, zinc, copper, iron and manganese elements is (1-3):(2-5):(0.5-1.5):(0.5-1.5):(0.3-0.8).

7. The nutrient medium for shortening the growth period of Chinese Milkvetch according to claim 1 or 2, characterized in that: The growth regulators include gibberellins, indoleacetic acid and naphthylacetic acid.

8. The nutrient medium for shortening the growth period of Chinese milk vetch according to claim 7, characterized in that: The mass ratio of the gibberellins, indoleacetic acid and naphthylacetic acid is (1-3): (2-5): (3-7).

9. A method for preparing a nutrient medium for shortening the growth period of Chinese milk vetch according to any one of claims 1 to 8, characterized in that: The following steps are involved: Weigh the raw materials by mass, mix humus, peat soil, vermiculite, perlite and river sand evenly to obtain a matrix mixture; add organic fertilizer, trace element fertilizer and growth regulator to the matrix mixture in sequence, stir evenly to obtain a nutrient matrix.

10. Use of the nutrient medium for shortening the growth cycle of Chinese milk vetch as claimed in any one of claims 1 to 8 in the field of Chinese milk vetch planting.

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