CN117185860A

CN117185860A - Medium trace element liquid fertilizer and preparation method and application thereof

Info

Publication number: CN117185860A
Application number: CN202311170033.6A
Authority: CN
Inventors: 伍津锋
Original assignee: Guangdong Hongrun Agricultural Technology Co ltd
Current assignee: Guangdong Hongrun Agricultural Technology Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2023-12-08

Abstract

The invention belongs to the technical field of fertilizers, and particularly relates to a medium and trace element liquid fertilizer as well as a preparation method and application thereof. The medium trace element liquid fertilizer provided by the invention contains aluminum, boron, barium, calcium, chromium, copper, potassium, lithium, magnesium, manganese, molybdenum, sodium, phosphorus, silicon, strontium, titanium and zinc, and also contains a large amount of organic matters, humic acid substances and synergists, is complete in nutrients, can provide various trace elements required by growth for plants by limiting the concentration of each component, meets the normal growth of the plants, and can also improve the quality and yield of agricultural products and reduce the production cost.

Description

Medium trace element liquid fertilizer and preparation method and application thereof

Technical Field

The invention belongs to the technical field of fertilizers, and particularly relates to a medium and trace element liquid fertilizer as well as a preparation method and application thereof.

Background

In the prior art, water-soluble fertilizers mainly comprise two types, one type is powdery, crystalline or granular fertilizers, and the other type is liquid fertilizers. The water-soluble fertilizer can be directly used for drip irrigation or spray irrigation, and has wide application prospect in water-deficient areas or in agriculture with integrated water and fertilizer. However, the water-soluble fertilizer has higher price and is not born by many peasants.

For solid water-soluble fertilizer, after farmers buy the solid water-soluble fertilizer back to home, a simple water pit is generally dug, chemical fertilizer is poured into the water pit, and the water is manually stirred, so that the preparation proportion is inaccurate, the automation degree is low, and a large amount of waste is caused. The liquid fertilizer comprises a clear liquid type, a suspension type and a paste type, is used as a novel high-efficiency compound fertilizer, and has the following advantages: (1) easy absorption and quick effect; (2) the fertilizer is dissolved and diluted without cooling, is easy to uniformly distribute in soil after being applied, does not form concentrated fertilization and has high local salinity like solid fertilizer, and is not easy to frostbite root seedlings; (3) the water-saving irrigation device can be used for sprinkling irrigation, drip irrigation or irrigation, is convenient to use, saves cost and has quick response; (4) can be mixed with pesticide, bactericide and herbicide and can be uniformly mixed; (5) the solid fertilizer is not segregated in storage and transportation and has uneven quality; (6) the product has no moisture absorption and caking problems; (7) dust and smoke can not appear in the production, application and transportation, and the pollution is less. Liquid fertilizers are one of the trends in chemical fertilizer industry in the world today. However, although the liquid fertilizer has the advantages, the prior liquid fertilizer has poor biological activity and cannot fully meet the actual use requirements.

Disclosure of Invention

The invention aims to make up the defects of the prior art, and provides a medium trace element liquid fertilizer which has no pollution and nuisance and can activate soil and increase fertilizer efficiency, a preparation method and application thereof, thereby improving the product and quality of plants and reducing the production cost.

The invention provides a medium trace element liquid fertilizer which comprises medium trace elements, organic matters, humic acid substances and a synergistic agent;

the invention provides a medium trace element liquid fertilizer, which comprises aluminum, boron, barium, calcium, chromium, copper, potassium, lithium, magnesium, manganese, molybdenum, sodium, phosphorus, silicon, strontium, titanium and zinc;

the concentration of organic matters in the medium trace element liquid fertilizer is 15-25 wt%, the concentration of humic acid substances is 10-20 wt%, and the concentration of the synergistic agent is 0.1-1 wt%;

the concentration of the medium trace elements in the medium trace element liquid fertilizer is as follows:

the invention also provides a preparation method of the medium trace element liquid fertilizer, which comprises the following steps:

mixing part of the first group of plants, part of the second group of plants and part of the third group of plants, and mixing the obtained first material and water according to (8-10): mixing the materials according to the mass ratio of (4-5), and fermenting to obtain fermentation liquor;

mixing the rest first group of plants, the rest second group of plants and the rest third group of plants, and soaking the obtained second material in boiling water to obtain an extract;

mixing the fermentation liquor and the extracting solution to obtain a stock solution;

mixing the stock solution with a synergistic agent to obtain the medium trace element liquid fertilizer;

the first group of plants comprises spinach, clover, junda, cabbage and longwall grass;

the second group of plants comprises lithospermum, rape, rice, peanut and Chinese grass;

the third group of plants comprises herba Phyllostachydis Henonis, okra, horseradish, herba Urticae Cannabinae and caulis et folium Chrysanthemi Segeti.

Preferably, the first group of plants comprises 1 to 5 parts of spinach, 4 to 8 parts of clover, 2 to 10 parts of kaffir lily, 5 to 15 parts of Chinese cabbage and 1 to 5 parts of longevodia;

based on the mass parts of the first group of plants, the second group of plants comprises 4-6 parts of lithospermum, 2-5 parts of rape, 1-4 parts of rice, 2-8 parts of peanut and 8-12 parts of Chinese grass;

based on the mass parts of the first group of plants, the third group of plants comprises 1-4 parts of phyllanthus niruri, 6-10 parts of okra, 15-20 parts of horseradish, 4-8 parts of nettle and 1-5 parts of crowndaisy chrysanthemum.

Preferably, the fermentation temperature is 25-38 ℃ and the fermentation time is 80-100 d; the soaking time is 50-70 min.

Preferably, the volume ratio of the fermentation liquid to the extracting solution is (12-15): (6-8).

Preferably, the mass ratio of the partial first group of plants to the remaining first group of plants is (0.5-2): (3-4);

the mass ratio of the part of the second group of plants to the rest of the second group of plants is (5-8): (12-15);

the mass ratio of the part of the third group of plants to the rest of the third group of plants is (1-3): (2-4).

The invention also provides application of the medium trace element liquid fertilizer in plant growth.

Preferably, the plant comprises melon and fruit plants, leaf vegetables plants, rice plants or flowers and plants.

Preferably, 180 kg/mu of the medium and trace element liquid fertilizer is applied to melon and fruit plants, leaf vegetables plants, rice plants or flowers and plants in one growth period.

The beneficial effects are that:

the medium trace element liquid fertilizer provided by the invention contains aluminum, boron, barium, calcium, chromium, copper, potassium, lithium, magnesium, manganese, molybdenum, sodium, phosphorus, silicon, strontium, titanium and zinc, and also contains a large amount of organic matters, humic acid substances and synergists, is complete in nutrients, and can quickly and economically slow, various trace elements required by growth can be provided for plants by limiting the concentration of each component, so that the normal growth of the plants can be satisfied, the yield and quality of agricultural products can be improved, and the production cost can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of a plantation distribution;

FIG. 2 shows the pH change of soil before and after 1 month of applying the trace element liquid fertilizer of the present invention; wherein the left side is before application, and the right side is after application for 1 month;

FIGS. 3 to 4 show rice growth; wherein, FIG. 3 shows the T2 treated rice after 20d planting; FIG. 4 shows rice after 15d of planting, "unused" for CK1 treatment group and "used" for T2 treatment group;

FIG. 5 shows growth of the treated group of T2 spinach;

FIG. 6 is a cross-section of a mature eggplant; wherein the left side is CK1 treatment group, and the right side is T2 treatment group;

FIG. 7 shows the growth of T2 treated group green beans;

FIG. 8 is a schematic diagram of a ripe green orange; wherein the left side is CK1 treatment group, and the right side is T2 treatment group.

Detailed Description

the medium trace elements comprise aluminum, boron, barium, calcium, chromium, copper, potassium, lithium, magnesium, manganese, molybdenum, sodium, phosphorus, silicon, strontium, titanium and zinc;

the concentration of trace elements in the medium trace element liquid fertilizer is as follows:

medium trace elements	Concentration/ppm	Medium trace elements	Concentration/ppm	Medium trace elements	Concentration/ppm
						Aluminum (Al)	4～6	Potassium	1500～1800	Phosphorus (P)	250～300
Boron (B)	0.4～0.8	Lithium ion battery	0.01～0.05	Silicon (Si)	0.5～1.0
						Barium (Ba)	0.1～0.4	Magnesium (Mg)	200～250	Strontium (strontium)	0.4～0.8
Calcium	250～270	Manganese (Mn)	6～10	Titanium	0.02～0.06
						Chromium (Cr)	0.2～0.6	Molybdenum (Mo)	0.005～0.03	Zinc alloy	1～2
Copper (Cu)	0.05～0.1	Sodium salt	100～110	/	/

。

In the present invention, the medium trace element liquid fertilizer comprises 15wt.% to 25wt.% of organic matter, and more preferably 20wt.%.

In the present invention, the medium trace element liquid fertilizer comprises 10wt.% to 20wt.% humic acid substances, more preferably 12wt.% to 18wt.%, and still more preferably 15wt.%. The humic acid substances according to the invention preferably comprise potassium humate.

In the present invention, the medium trace element liquid fertilizer includes 0.1wt.% to 1wt.% of the synergist, more preferably 0.2wt.% to 0.8wt.%, and still more preferably 0.5wt.%. The invention is not critical to the specific type of the synergistic agent, and the synergistic agent conventional in the field, such as an organosilicon surfactant, can be selected.

In the invention, the medium trace element liquid fertilizer comprises 4-6 ppm of aluminum, preferably 5.39ppm.

In the invention, the medium trace element liquid fertilizer comprises 1500-1800 ppm potassium, preferably 1600-1750 ppm, more preferably 1650-1700 ppm and most preferably 1675.75ppm.

In the invention, the medium trace element liquid fertilizer comprises 250-300 ppm of phosphorus, preferably 260-280 ppm, and more preferably 267ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.4-0.8 ppm of boron, preferably 0.5-0.7 ppm, and more preferably 0.664ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.01-0.05 ppm of lithium, preferably 0.02-0.04 ppm, and more preferably 0.0242ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.5-1.0 ppm of silicon, preferably 0.6-0.85 ppm, and more preferably 0.833ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.1-0.4 ppm of barium, preferably 0.2-0.3 ppm, and more preferably 0.252ppm.

In the invention, the medium trace element liquid fertilizer comprises 200-250 ppm magnesium, preferably 220-245 ppm magnesium, and more preferably 245ppm magnesium.

In the invention, the medium trace element liquid fertilizer comprises 0.4-0.8 ppm of strontium, preferably 0.5-0.7 ppm, and more preferably 0.666ppm.

In the invention, the medium trace element liquid fertilizer comprises 250-270 ppm of calcium, preferably 260-265 ppm, and more preferably 263ppm.

In the invention, the medium trace element liquid fertilizer comprises 6-10 ppm of manganese, preferably 7-9 ppm, and more preferably 8.73ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.02-0.06 ppm of titanium, preferably 0.04-0.05 ppm, and more preferably 0.0426ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.2-0.6 ppm of chromium, preferably 0.4-0.5 ppm, and more preferably 0.441ppm.

In the present invention, the medium trace element liquid fertilizer comprises 0.005 to 0.03ppm molybdenum, preferably 0.01 to 0.02ppm, and more preferably 0.019ppm.

In the invention, the medium trace element liquid fertilizer comprises 1-2 ppm zinc, preferably 1.5-1.8 ppm, and more preferably 1.52ppm.

In the invention, the medium trace element liquid fertilizer comprises 0.05-0.1 ppm of copper, preferably 0.06-0.08 ppm, and more preferably 0.071ppm.

In the invention, the medium trace element liquid fertilizer comprises 100-110 ppm sodium, preferably 106-108 ppm sodium, and more preferably 107ppm sodium.

The medium trace element liquid fertilizer provided by the invention is rich in medium trace elements, organic matters, humic acid substances and synergists, has complete nutrients, can provide various trace elements required by growth for plants, and can meet the normal growth of the plants; and the soil can be loosened, the soil aggregate structure is enhanced, the water and fertilizer retaining capacity is improved, the soil organic matters are increased, the soil is activated, the effect of releasing potential nutrients in the soil is assisted, the yield and quality of agricultural products are improved, and the production cost is reduced. The medium trace element liquid fertilizer provided by the invention can wake up and activate the microbial flora of soil, increase the microbial diversification, rapidly degrade toxic and harmful substances in the soil, and simultaneously, the microbial inoculum has the effects of improving the utilization rate of chemical fertilizers and activating potential nutrients in the soil; promote the proliferation of beneficial microorganisms in the rhizosphere of crops, improve the ecological environment of the rhizosphere of crops, inhibit soil-borne diseases, reduce the disease index of continuous cropping crops and greatly relieve continuous cropping obstacles after being applied in successive years.

mixing the rest first group of plants, the rest second group of plants and the rest third group of plants, soaking the obtained second material in boiling water, and filtering to obtain an extract;

In the present invention, the first group of plants preferably includes 1 to 5 parts, more preferably 2 to 4 parts, of spinach in terms of parts by mass. The whole plant of spinach is preferably used as a raw material.

In the present invention, the first group of plants preferably includes 4 to 8 parts, more preferably 5 to 6 parts, of clover based on the mass parts of the spinach. The invention preferably takes the whole clover plant as the raw material.

In the present invention, the first group of plants preferably includes, based on the parts by mass of the spinach, 2 to 10 parts, more preferably 5 to 8 parts, still more preferably 6 parts of kaffir lily. The invention preferably takes the whole plant of the clivia miniata as a raw material.

In the present invention, the first group of plants preferably includes 5 to 15 parts, more preferably 8 to 12 parts, and still more preferably 10 parts of cabbage based on the parts by mass of the spinach. The invention preferably takes the whole plant of the cabbage as a raw material.

In the present invention, the first group of plants preferably includes 1 to 5 parts, more preferably 2 to 4 parts, of longwall grass, based on the mass parts of the spinach. The invention preferably takes the whole plant of the longwall grass as the raw material.

In the present invention, the second group of plants preferably includes 4 to 6 parts, more preferably 5 parts, of lithospermum based on the mass parts of the first group of plants. The invention preferably takes the whole plant of lithospermum as a raw material.

In the present invention, the second group of plants preferably includes 2 to 5 parts, more preferably 4 parts, of canola based on the mass parts of the first group of plants. The whole rape plant is preferably used as a raw material.

In the present invention, the second group of plants preferably includes 1 to 4 parts, more preferably 2 to 3 parts, of rice based on the mass parts of the first group of plants. The invention preferably uses the rhizomes of the rice as raw materials.

In the present invention, the second group of plants preferably includes 2 to 8 parts, more preferably 4 to 6 parts, and still more preferably 5 parts of peanuts based on the mass parts of the first group of plants. The invention preferably takes the stem leaves of the peanut as raw materials.

In the present invention, the second group of plants preferably includes chinese grass 8 to 12 parts, more preferably 10 parts, based on the mass parts of the first group of plants. The invention preferably takes the whole plant of Chinese grass as the raw material.

In the present invention, the third group of plants preferably includes 1 to 4 parts, more preferably 2 to 3 parts, of phyllanthus niruri, based on the mass parts of the first group of plants. The invention preferably takes the whole plant of the phyllanthus niruri as a raw material.

In the present invention, the third group of plants preferably includes okra 6 to 10 parts, more preferably 8 parts, based on the mass parts of the first group of plants. The invention preferably takes the root and stem of okra as a raw material.

In the present invention, the third group of plants preferably includes 15 to 20 parts, more preferably 16 to 18 parts, of horseradish based on the mass parts of the first group of plants. The invention preferably takes the whole plant of horseradish as a raw material.

In the present invention, the third group of plants preferably includes 4 to 8 parts, more preferably 6 parts, of nettle based on the mass parts of the first group of plants. The invention preferably takes the whole plant of nettle as the raw material.

In the present invention, the third group of plants preferably comprises 1 to 5 parts, more preferably 2 to 3 parts, of crowndaisy chrysanthemum based on the mass parts of the first group of plants. The whole plant of the crowndaisy chrysanthemum is preferably used as a raw material.

The invention uses different plants as raw materials, which can increase the variety and concentration of trace elements and increase fertilizer efficiency.

Preferred sources of the first, second and third sets of plants of the invention include: after the seeds are treated by using the annular accelerator, the seeds are planted by adopting a primordial ecological method. The invention uses the ring accelerator to treat the seeds to accelerate the photon group to synchronously resonate, and acts on the quantized seed core to enable the proton group and the neutron group to generate different dark material flows, the left-handed network of the seed core can be converted into a right-handed network, and the electron layer in the atomic group of the seeds is changed from a left-handed negative electrode layer into a right-handed positive electrode layer with energy aggregation. The original energy and vigor of the seed can be activated by quantification. The method has no strict requirements on the original ecological planting method, and the method is carried out by conventional operation. The invention adopts the original ecological planting method to fundamentally solve the safety problem of the liquid fertilizer.

The invention mixes part of the first group of plants, part of the second group of plants and part of the third group of plants to obtain a first material, and the first material and water are mixed according to (8-10): the mass ratio of (4) to (5) is preferably 10:4, mixing and fermenting to obtain fermentation liquor.

In the present invention, the temperature of the fermentation is preferably 25 to 38 ℃, more preferably 28 to 35 ℃, still more preferably 30 to 32 ℃; the fermentation time is preferably 80 to 100d, more preferably 90d. The invention is preferably stirred once a day for the first 15d of the fermentation and then every 15 d; the stirring time is preferably 7 to 10 minutes, more preferably 8 minutes. The invention preferably performs ultraviolet disinfection during the fermentation, thereby further achieving the pure natural effect, and being sterile, nontoxic and nuisanceless and edible. Preferably, after fermentation is finished, a 100# filter screen is used for filtering to obtain the fermentation liquor.

The invention mixes the residual first group of plants, the residual second group of plants and the residual third group of plants to obtain a second material, and then the second material is soaked in boiling water to obtain an extracting solution.

In the present invention, the temperature of the boiling water is preferably 100 ℃; the soaking time is preferably 50 to 70 minutes, more preferably 60 minutes. In the present invention, the extract is preferably obtained by filtering and squeezing with 100# filter cloth after the soaking.

In the present invention, the mass ratio of the partial first group of plants to the remaining first group of plants is preferably (0.5 to 2): (3 to 4), more preferably 1:3, a step of; the mass ratio of the part of the second group of plants to the rest of the second group of plants is preferably (5-8): (12 to 15), more preferably 7:13; the mass ratio of the part of the third group plants to the rest of the third group plants is preferably (1-3): (2 to 4), more preferably 2:3.

the invention respectively ferments and extracts the plants, can obtain the nutrition components in the plants to the greatest extent, satisfies the normal growth of the plants, improves the yield and quality of agricultural products, and reduces the production cost.

After the fermentation liquor and the extracting solution are obtained, the fermentation liquor and the extracting solution are mixed to obtain the stock solution. In the present invention, the volume ratio of the fermentation liquid to the extraction liquid is preferably (12 to 15): (6 to 8), more preferably 13:7.

after the stock solution is obtained, the stock solution and the synergist are mixed to obtain the medium trace element liquid fertilizer.

The amounts and types of the synergists of the present invention are described above and are not described herein.

The preparation raw materials are easy to obtain, the preparation method is simple, the cost is low, the fertilizer efficiency is high and durable, compared with the conventional chemistry, in the third and fourth heat accumulating zones with shorter growing period, the fertilizer efficiency of the medium trace element liquid fertilizer provided by the invention reaches 6 months, additional fertilizer is not needed within half a year, the investment is saved, the labor is saved, and the conventional fertilizer is only 3 months; under the condition of equivalent input, compared with the conventional fertilizer, the grain crop can be increased by 10-20% per mu.

In the present invention, the plant preferably includes melon and fruit type plants, leaf type plants, rice type plants or flower and grass type plants; the melon and fruit plant preferably comprises citrus; the leaf vegetable plant preferably comprises spinach and/or eggplant; the rice plant preferably comprises rice; the flowers and plants preferably comprise China rose or orchid.

In the invention, the melon and fruit plants, leaf vegetables plants, rice plants or flowers and plants are preferably applied with 180 kg/mu of the medium trace element liquid fertilizer in one growth period. The medium trace element liquid fertilizer is preferably applied for 3 times, and the application amount of each time is preferably 60 kg/mu. The medium trace element liquid fertilizer is preferably diluted 300-800 times, more preferably 600 times, for each application. The application mode of the invention is preferably foliar spraying and/or root irrigation.

In the invention, the leaf vegetable plants, rice plants or flowers and plants are preferably applied with 200-400 mL/mu of medium trace element liquid fertilizer in 800-1000 times of diluent in one growth period. The application mode of the invention is preferably foliar spraying and/or root irrigation. The application amount of the medium trace element liquid fertilizer is more preferably 300 mL/mu; the dilution factor of the medium trace element liquid fertilizer is preferably 800 times.

For further explanation of the present invention, the following describes in detail a medium trace element liquid fertilizer, its preparation method and application provided by the present invention with reference to the accompanying drawings and examples, but they should not be construed as limiting the scope of the present invention.

Example 1

The plant obtaining method for preparing the medium trace element liquid fertilizer comprises the following steps:

the seeds after sowing treatment are planted by adopting a primordial ecological method to obtain spinach, crowndaisy chrysanthemum, rape, longhairy antenoron herb, cabbage, chinese grass, rice, corn, peanut, nettle seed, lithospermum seed, leaf-eating seed, okra seed and horseradish seed by respectively treating spinach seeds, crowndaisy chrysanthemum seeds, rape seeds, clover seeds, monarch, cabbage, chinese grass, rice rootstock, peanut rootstock, nettle, lithospermum, leaf-eating seed, okra and horseradish seeds by utilizing an electron beam treatment with the treatment condition of 450Gy, wherein the treatment time is 4 hours.

Example 2

The preparation method of the medium and trace element liquid fertilizer comprises the following steps:

1. the plants obtained in example 1 were used as raw materials, and the following materials were prepared by mass:

a first group of plants: 4kg of spinach, 5kg of clover, 4kg of junda, 10kg of cabbage and 2kg of longhairy antenoron herb;

a second group of plants: 5kg of lithospermum, 2kg of rape, 3kg of rice rootstock, 5kg of stem and leaf of peanut and 10kg of Chinese grass;

third group of plants: 2kg of phyllanthus niruri, 6kg of okra rhizome, 15kg of horseradish, 5kg of nettle and 4kg of crowndaisy chrysanthemum.

2. Taking 25% of the total mass of the first group of plants, 35% of the total mass of the second group of plants and 40% of the total mass of the third group of plants, cleaning, crushing, and putting into a plastic container to obtain a first material; mixing the first material with water according to 10g: fermenting at 25deg.C for about 8min at 15d each day, stirring every 15d until 90d, filtering with 100# filter screen to obtain fermentation liquid, and standing for blending.

3. Taking the rest first group of plants, the second group of plants and the third group of plants, cleaning, cutting, and placing into a container to obtain a second material; the second material and boiling water were mixed according to 1g: mixing at a ratio of 1mL, soaking for 60min, cooling, squeezing out liquid with 100# filter cloth to obtain extractive solution, and standing for blending.

4. And (3) mixing the fermentation liquor obtained in the step (2) and the extracting solution obtained in the step (3) according to a ratio of 13:7, mixing the mixture in a volume ratio to obtain a stock solution.

5. And (3) mixing the synergist with the stock solution obtained in the step (4) to obtain the medium trace element liquid fertilizer, wherein the concentration of the synergist is 0.5wt.%.

Example 3

a first group of plants: 3kg of spinach, 6kg of clover, 5kg of junda, 8kg of cabbage and 3kg of longhairy antenoron herb;

a second group of plants: 4kg of lithospermum, 2kg of rape, 4kg of rice rootstock, 6kg of stem and leaf of peanut and 8kg of Chinese grass;

third group of plants: 3kg of phyllanthus niruri, 8kg of okra rhizome, 16kg of horseradish, 6kg of nettle and 2kg of crowndaisy chrysanthemum.

2. Taking 20% of the total mass of the first group of plants, 40% of the total mass of the second group of plants and 50% of the total mass of the third group of plants, cleaning, crushing, and putting into a plastic container to obtain a first material; mixing the first material with water according to a ratio of 10:4, fermenting at 30 ℃, stirring for about 7min for 15 days, stirring for 90d every 15d, filtering with 100# filter screen to obtain fermentation liquor, and standing for blending.

3. Taking the rest first group of plants, the second group of plants and the third group of plants, cleaning, cutting, and placing into a container to obtain a second material; the second material and boiling water were mixed according to 1g: mixing the materials in a proportion of 2mL, soaking for 70min, cooling, squeezing out liquid with 100# filter cloth to obtain an extract, and standing for blending.

4. And (3) mixing the fermentation liquor obtained in the step (2) and the extracting solution obtained in the step (3) according to a ratio of 12:6, mixing the materials according to the volume ratio to obtain a stock solution.

5. And (3) mixing the synergist with the stock solution obtained in the step (4) to obtain the medium trace element liquid fertilizer, wherein the concentration of the synergist is 1wt.%.

Example 4

a first group of plants: 4kg of spinach, 4kg of clover, 6kg of junda, 12kg of Chinese cabbage and 1kg of longhairy antenoron herb;

a second group of plants: 6kg of lithospermum, 3kg of rape, 2kg of rice rootstock, 4kg of stem and leaf of peanut and 12kg of Chinese grass;

2. Taking 15% of the total mass of the first group of plants, 30% of the total mass of the second group of plants and 45% of the total mass of the third group of plants, cleaning, crushing, and putting into a plastic container to obtain a first material; mixing the first material with water according to a ratio of 10:4, fermenting at 28 ℃, stirring for about 10min for 15d each day, stirring for 90d every 15d, filtering with 100# filter screen to obtain fermentation liquor, and standing for blending.

Comparative example 1

The only difference with example 1 is that no okra rhizome is added, and the preparation method is carried out according to the preparation method of example 1, so as to obtain the medium trace element liquid fertilizer.

Comparative example 2

The only difference with example 1 is that no rice rootstock is added, and the preparation method is carried out according to the preparation method of example 1, so as to obtain the medium trace element liquid fertilizer.

Comparative example 3

The only difference from example 1 was that the preparation was carried out according to the preparation method of example 1 without adding the first group of plants, to obtain a medium trace element liquid fertilizer.

Test example 1

The medium trace element liquid fertilizers obtained in examples 2 to 4 and comparative examples 1 to 3 were used as samples, and the contents of organic matters, humic acid substances and medium trace elements in the medium trace element liquid fertilizers were examined, and the results were shown in table 1 below.

Table 1 results of detecting the contents of the liquid fertilizer components containing different medium and trace elements

As can be seen from Table 1, the medium trace element liquid fertilizer provided by the invention contains a large amount of organic matters and humic acid substances besides the medium trace elements such as aluminum, boron, barium, calcium, chromium, copper, potassium, lithium, magnesium, manganese, molybdenum, sodium, phosphorus, silicon, strontium, titanium, zinc and the like, and has complete nutrients.

Application example 1

1. Experimental selection and protocol design:

test base: the total area is about 7000 square meters, the soil in the garden is sandy soil, and the nutrient in the whole garden is low. The plantation is divided into 8 small blocks except the road, each area is different in size, a specific distribution diagram is shown in fig. 1, different crops are planted in each land, and the types, densities and planting modes of crops planted in the No. 1-8 land are shown in table 2.

Table 2 crop types, densities and planting patterns for different plots in plantations

Each plot was randomly divided into 4 treatment areas, which were designated CK1, CK2, T1 and T2 treatment groups in sequence, each treatment group being treated as shown in table 3 below.

TABLE 3 treatment modes for treatment groups of different plots

Wherein, norway compound fertilizer: the content of nitrogen, phosphorus and potassium is more than or equal to 45 percent (N: P: K=15:15:15), and 6000 yuan per ton;

biological organic fertilizer: the organic matter is more than or equal to 40 percent, the effective viable count is more than or equal to 0.2 hundred million/g, and each ton of the organic matter is 2400 yuan;

common organic fertilizer: the organic matter content is more than or equal to 45 percent, the nitrogen, phosphorus and potassium content is more than or equal to 5 percent (N: P: K=15:15:15), and 1400 yuan per ton;

the trace element liquid fertilizer of example 2 was prepared at a cost of 1280 yuan per ton (about 1000L).

2. Corresponding crops were planted in the test field, base fertilizer and topdressing were applied in the manner as shown in tables 1 and 2.

3. Soil pH was measured before and after T2 treatment group in plot 1 and the results are shown in fig. 2.

According to fig. 2, after the medium trace element liquid fertilizer provided by the invention is applied, the pH of soil is increased from original 5.0 to 6.0. The trace element liquid fertilizer can regulate soil.

4. Crop growth and yield were observed and the results are shown in figures 3-8 and table 3.

TABLE 3 yield of different crops

As can be seen from FIGS. 3 to 4 and Table 1, the growth after 15d of the rice plants was found to be 15.5cm in root length for the "used" T2-treated rice group and 7.5cm in root length for the "unused" CK 1-treated rice group, and 48% increase in root length for the T2-treated rice group compared to the CK 1-treated rice group. Compared with the CK1 treated rice, the yield of the T2 treated rice is increased by 52.16 percent, and the fertilization cost is reduced by 68 percent; compared with the CK2 treated rice, the yield of the T2 treated rice is increased by 33.50 percent, and the fertilization cost is reduced by 90.15 percent; compared with the T1-treated rice, the yield of the T2-treated rice is increased by 46.00%, and the fertilization cost is reduced by 85.04%.

As can be seen from FIG. 5 and Table 1, the plant height reached 8.79cm when spinach was ripe. Compared with the spinach of the CK1 treatment group, the yield of the spinach of the T2 treatment group is increased by 24.32%, and the fertilization cost is reduced by 57.33%; compared with the spinach of the CK2 treatment group, the yield of the spinach of the T2 treatment group is increased by 4.19%, and the fertilization cost is reduced by 89.62%; compared with the spinach of the T1 treatment group, the spinach of the T2 treatment group increases the yield by 23.00 percent, and reduces the fertilization cost by 83.77 percent.

As can be seen from table 1, compared with the CK 1-treated group tomatoes, the yield of the T2-treated group tomatoes is increased by 26.23%, and the fertilization cost is reduced by 68.00%; compared with the tomatoes in the CK2 treatment group, the yield of the tomatoes in the T2 treatment group is increased by 17.74%, and the fertilization cost is reduced by 90.15%; compared with the T1-treated tomatoes, the yield of the T2-treated tomatoes is increased by 19.85%, and the fertilization cost is reduced by 85.04%.

As can be seen from fig. 6 and table 1, the yield of the eggplants in the T2 treatment group was increased by 23.13% compared with the eggplants in the CK1 treatment group, and the fertilization cost was reduced by 68.00%; compared with the CK2 treated eggplants, the yield of the T2 treated eggplants is increased by 14.92%, and the fertilization cost is reduced by 90.15%; compared with the T1 treated eggplants, the yield of the T2 treated eggplants is increased by 17.59 percent, and the fertilization cost is reduced by 85.04 percent.

As can be seen from fig. 7 and table 1, compared with the CK 1-treated group green beans, the T2-treated group green beans increased in yield by 48.55%, and the fertilization cost was reduced by 57.33%; compared with the CK2 treatment group green beans, the yield of the T2 treatment group green beans is increased by 24.29%, and the fertilization cost is reduced by 89.62%; compared with the T1 treated green soy bean, the yield of the T2 treated green soy bean is increased by 35.79 percent, and the fertilization cost is reduced by 83.77 percent.

As can be seen from fig. 8 and table 1, compared with the CK1 treated green orange, the yield of the T2 treated green orange is increased by 18.44%, the fertilization cost is reduced by 68.00%, and the volume of the single green orange is increased; compared with the green orange treated by CK2, the yield of the green orange treated by T2 is increased by 3.07%, and the fertilization cost is reduced by 90.15%; compared with the T1-treated green orange, the yield of the T2-treated green orange is increased by 6.44%, and the fertilization cost is reduced by 85.04%.

According to the above, the medium trace element liquid fertilizer provided by the invention can not only meet the normal growth of plants, but also improve the quality and yield of agricultural products, and has low production cost.

Although the foregoing embodiments have been described in some, but not all, embodiments of the invention, it should be understood that other embodiments may be devised in accordance with the present embodiments without departing from the spirit and scope of the invention.

Claims

1. The medium trace element liquid fertilizer is characterized by comprising medium trace elements, organic matters, humic acid substances and a synergistic agent;

。

2. The method for preparing the medium trace element liquid fertilizer according to claim 1, which is characterized by comprising the following steps:

3. The preparation method according to claim 2, wherein the first group of plants comprises, by mass, 1 to 5 parts of spinach, 4 to 8 parts of clover, 2 to 10 parts of kaffir lily, 5 to 15 parts of cabbage and 1 to 5 parts of longhairy antenoron herb;

4. The preparation method according to claim 2, wherein the fermentation temperature is 25-38 ℃ and the fermentation time is 80-100 d; the soaking time is 50-70 min.

5. The preparation method according to claim 2, wherein the volume ratio of the fermentation liquid to the extraction liquid is (12-15): (6-8).

6. The method according to claim 2, wherein,

the mass ratio of the partial first group of plants to the rest first group of plants is (0.5-2): (3-4);

7. The use of the liquid medium trace element fertilizer according to claim 1 or the liquid medium trace element fertilizer according to any one of claims 2 to 6 in plant growth.

8. The use according to claim 7, wherein the plant comprises melon, fruit, leaf, rice or flower.

9. The use according to claim 7 or 8, wherein 180 kg/mu of the medium trace element liquid fertilizer is applied in one growth cycle of melon and fruit plants, leaf vegetables plants, rice plants or flowers and plants.