CN114436701B - Organic fertilizer containing camellia oleifera extract for promoting crop growth and preparation method thereof - Google Patents

Organic fertilizer containing camellia oleifera extract for promoting crop growth and preparation method thereof Download PDF

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CN114436701B
CN114436701B CN202210223807.6A CN202210223807A CN114436701B CN 114436701 B CN114436701 B CN 114436701B CN 202210223807 A CN202210223807 A CN 202210223807A CN 114436701 B CN114436701 B CN 114436701B
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fertilizer
camellia oleifera
parts
extract
oleifera extract
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CN114436701A (en
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郝泽金
李彪
管业圣
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Jiangxi Sinomaster Camellia Technology Co ltd
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Jiangxi Sinomaster Camellia Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
    • C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/10—Solid or semi-solid fertilisers, e.g. powders
    • C05G5/12—Granules or flakes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Soil Sciences (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses an organic fertilizer containing camellia oleifera extract for promoting crop growth and a preparation method thereof, relating to the field of organic fertilizers and specifically comprising the following steps: the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material; step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to prepare the organic fertilizer. The invention adds the camellia oleifera extract, and the extract is a polyphenol substance, so that NH in the fertilizer can be treated 4+ Adsorbing and fixing to suppress NH 4+ The nitrification of (2) reduces the formation of nitrified nitrogen, thereby inhibiting the non-uniformity of nitrogen dynamics in a certain space. Therefore, the content of nitrate can be effectively reduced, and the growth of crops is promoted.

Description

Organic fertilizer containing camellia oleifera extract for promoting crop growth and preparation method thereof
Technical Field
The invention relates to the field of organic fertilizers, in particular to an organic fertilizer containing a camellia oleifera extract for promoting crop growth and a preparation method thereof.
Background
The oil tea is a local tree species with good economic and ecological benefits in China. The camellia seeds contain more than 60% of grease, and are rich in various vitamins, trace elements, sterol, squalene, carotene, polyphenol and other nutritional ingredients. Polyphenols are called as "group seven nutrients", have the functions of scavenging free radicals, inhibiting lipid peroxidation, enhancing the effects of other antioxidants and the like, can regulate the metabolic balance of free radicals in the body of a user, and prevent and treat related diseases, and therefore are attracting increasing attention of scholars. The high-efficiency extraction and analysis of the camellia oleifera polyphenol have important significance for comprehensively knowing polyphenol components in camellia oleifera seeds.
In the case of Fe deficiency in plants, the cause of the Fe deficiency is closely related to carbonate in high concentration in calcareous soil, for example, bicarbonate ions can cause the pH value of the soil to increase, so that the Fe concentration in the soil solution can be reduced. Under the condition of higher pH value, the adaptation mechanism of the plant to the Fe deficiency stress can be inhibited to a certain extent, and HCO 3-in the plant body can cause the inactivation of Fe and finally the inactivation and the like.
If the soil contains a lot of organic fertilizers which are not decomposed, a lot of carbon dioxide is generated in the decomposition process of the organic fertilizers, and a large amount of HCO 3-is generated, thereby having a serious influence on the Fe suppliability in the soil. If the phenomenon of Fe deficiency of crops occurs, the final yield is seriously influenced; if the urban greening trees or ornamental plants are lack of Fe, leaves of the plants become yellow, and the ornamental value of the plants is seriously influenced.
For a long time, people correct the phenomenon of iron deficiency of plants by spraying inorganic ferric salts such as ammonium ferrous sulfate, ferrous sulfate and the like on leaf surfaces, but the inorganic ferric salts are very easy to oxidize, finally generate precipitates and cannot be absorbed and utilized by the plants. And the inorganic iron salt is not suitable for being mixed with other various pesticides and fertilizers.
Disclosure of Invention
The invention aims to solve at least one of technical problems in the prior art and provides an organic fertilizer containing a camellia oleifera extract for promoting crop growth and a preparation method thereof.
The technical solution of the invention is as follows:
an organic fertilizer containing a camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 1-20 parts of camellia oleifera extract, 10-25 parts of nitrogenous fertilizer, 5-30 parts of phosphate fertilizer, 5-15 parts of potash fertilizer, 3-5 parts of binder, 0.1-5 parts of vermiculite and 1-10 parts of organic film forming agent.
As a preferred embodiment of the present invention, the camellia oleifera extract is a polyphenol compound.
In a preferred embodiment of the present invention, the organic film forming agent is an acrylic resin.
The preferable scheme of the invention at least comprises one of the following technical characteristics:
the nitrogen fertilizer is one or more of urea, ammonium sulfate and ammonium phosphate;
the phosphate fertilizer is one or more of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder;
the potassium fertilizer is one or more of potassium sulfate, potassium chlorate and potassium ore powder.
In a preferred embodiment of the present invention, the binder is bentonite.
The invention also discloses a preparation method of the organic fertilizer containing the camellia oleifera extract for promoting crop growth, which comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to obtain the organic fertilizer.
As a preferred embodiment of the present invention, the preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing the camellia seeds, adding an extracting agent according to the material-liquid ratio, leaching, and performing rotary evaporation to obtain a powdery camellia extract.
As a preferable scheme of the invention, the feed-liquid ratio (w/v) is 1-20.
The invention also discloses application of the improved organic fertilizer or the organic fertilizer prepared by the preparation method in iron-deficiency crops.
The invention has the beneficial effects that:
(1) According to the organic fertilizer containing the camellia oleifera extract, the camellia oleifera extract is added, so that NH in the fertilizer can be treated due to the fact that the extract is a polyphenol substance 4+ Adsorbing and fixing to suppress NH 4+ The nitrification of (2) reduces the formation of nitrified nitrogen, thereby inhibiting the non-uniformity of nitrogen dynamics in a certain space; therefore, the content of nitrate can be effectively reduced, and the growth of crops is promoted.
In addition, the polyphenol structure can perform complex reaction with other metal ions. For example, polyphenol forms univalent or bivalent positive complex ions by matching one phenolic hydroxyl group with Fe or matching two ionic negative oxygen ions with Fe, so that Fe in crop soil is absorbed 2+ The ion concentration is effectively improved, so that the availability of iron element in the soil is obviously improved.
(2) According to the organic fertilizer containing the camellia oleifera extract for promoting the growth of crops, the vermiculite is added into the film forming agent, and active substances in the film of the vermiculite are released due to expansion of the vermiculite after water absorption, so that the organic fertilizer has the effect of gradually improving the soil property, can better protect nutrient substances of core materials, and avoids loss in the preservation process.
Detailed Description
The following examples are further illustrative of the technical solution of the present invention.
Example 1
An organic fertilizer containing a camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 3 parts of camellia oleifera extract, 12 parts of nitrogenous fertilizer, 11 parts of phosphate fertilizer, 9 parts of potash fertilizer, 3 parts of binder, 0.9 part of vermiculite and 3 parts of organic film forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is urea; the phosphate fertilizer is calcium superphosphate; the potash fertilizer is potassium sulfate. The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to prepare the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to the material-liquid ratio of 1. The extractant is ethanol.
Example 2
An organic fertilizer containing a camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 5 parts of camellia oleifera extract, 15 parts of nitrogenous fertilizer, 21 parts of phosphate fertilizer, 6 parts of potash fertilizer, 4 parts of binder, 2 parts of vermiculite and 8 parts of organic film forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is ammonium sulfate; the phosphate fertilizer is a calcium magnesium phosphate fertilizer; the potash fertilizer is potassium sulfate.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to obtain the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to the material-liquid ratio of 1. The extractant is ethanol.
Example 3
An organic fertilizer containing a camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 9 parts of camellia oleifera extract, 20 parts of nitrogenous fertilizer, 13 parts of phosphate fertilizer, 10 parts of potash fertilizer, 5 parts of binder, 3 parts of vermiculite and 7 parts of organic film forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is a mixture of urea, ammonium sulfate and ammonium phosphate with the mass ratio of 1;
the phosphate fertilizer is a mixture of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder with the mass ratio of 1;
the potash fertilizer is a mixture of potassium sulfate, potassium chlorate and potassium ore powder in a mass ratio of 1.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to prepare the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio of 1.
The extractant is ethanol.
Example 4
An organic fertilizer containing camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 11 parts of camellia oleifera extract, 25 parts of nitrogenous fertilizer, 16 parts of phosphate fertilizer, 13 parts of potash fertilizer, 5 parts of binder, 1 part of vermiculite and 8 parts of organic film forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is a mixture of urea, ammonium sulfate and ammonium phosphate with the mass ratio of 1;
the phosphate fertilizer is a mixture of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder with the mass ratio of 1;
the potash fertilizer is a mixture of potassium sulfate, potassium chlorate and potassium ore powder in a mass ratio of 1.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to obtain the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio of 1.
The extractant is ethanol.
Example 5
An organic fertilizer containing a camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 13 parts of camellia oleifera extract, 25 parts of nitrogenous fertilizer, 5 parts of phosphate fertilizer, 15 parts of potash fertilizer, 5 parts of binder, 2 parts of vermiculite and 9 parts of organic film forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is a mixture of urea, ammonium sulfate and ammonium phosphate with the mass ratio of 1;
the phosphate fertilizer is a mixture of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder with the mass ratio of 1;
the potash fertilizer is a mixture of potassium sulfate, potassium chlorate and potassium ore powder in a mass ratio of 1.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to obtain the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio of 1. The extractant is ethanol.
Comparative example 1 (oil-free tea extract)
An organic fertilizer containing camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 25 parts of nitrogenous fertilizer, 16 parts of phosphate fertilizer, 13 parts of potash fertilizer, 5 parts of binder, 1 part of vermiculite and 8 parts of organic film-forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is a mixture of urea, ammonium sulfate and ammonium phosphate with the mass ratio of 1;
the phosphate fertilizer is a mixture of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder with the mass ratio of 1;
the potash fertilizer is a mixture of potassium sulfate, potassium chlorate and potassium ore powder in a mass ratio of 1.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: mixing vermiculite and organic film-forming agent uniformly to prepare film-forming liquid, spraying the film-forming liquid on the core material, and drying to prepare the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio of 1. The extractant is ethanol.
COMPARATIVE EXAMPLE 2 (without vermiculite)
An organic fertilizer containing camellia oleifera extract for promoting crop growth comprises the following raw materials in parts by weight: 11 parts of camellia oleifera extract, 25 parts of nitrogenous fertilizer, 16 parts of phosphate fertilizer, 13 parts of potash fertilizer, 5 parts of binder and 8 parts of organic film-forming agent.
The camellia oleifera extract is a polyphenol compound.
The organic film-forming agent is acrylamide.
The nitrogen fertilizer is a mixture of urea, ammonium sulfate and ammonium phosphate with the mass ratio of 1;
the phosphate fertilizer is a mixture of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder with the mass ratio of 1;
the potash fertilizer is a mixture of potassium sulfate, potassium chlorate and potassium ore powder in a mass ratio of 1.
The binder is bentonite.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: and uniformly mixing the organic film forming agent to prepare a film forming solution, spraying the film forming solution on the core material, and drying to prepare the organic fertilizer.
The preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio of 1. The extractant is ethanol.
The examples and comparative examples were added to the soil of iron-deficient apple trees (with yellow leaves) at a rate of 30 kg/acre, and the color change of the leaves and the growth state of the apple trees were observed, and the test values are shown in Table 1.
Figure BDA0003534823340000081
Figure BDA0003534823340000091
As can be seen from Table 1, the apple trees of the examples turn green and grow vigorously, while the apple trees of the comparative examples grow relatively poorly, the main reason for which is probably as follows, and the analysis of comparative example 1 shows that NH in the fertilizer can be treated by adding the extract of Camellia oleifera as the extract is polyphenol 4+ Adsorbing and fixing to suppress NH 4+ The nitrification of (2) reduces the formation of nitrified nitrogen, thereby inhibiting the non-uniformity of nitrogen dynamics in a certain space. Thus, the content of nitrate can be effectively reduced.
In addition, the polyphenol structure can perform complex reaction with other metal ions. For example, polyphenol forms univalent or bivalent positive complex ions by matching one phenolic hydroxyl group with Fe or matching two ionic negative oxygen ions with Fe, so that Fe in the crop soil is absorbed by the complex ions 2+ The ion concentration is effectively improved, so that the availability of iron element in the soil is obviously improved. The plant polyphenol has good coordination chemical performance, and the degraded metal chelate of tannin has good water solubility, stability and dilutability. The plant cells are hydrophilic, and under the condition, the chelate can effectively form a substitute of EDTA chelate fertilizer, so that the EDTA chelate fertilizer is very convenient to use and has no pollution. The analysis of comparative example 2 shows that the addition of vermiculite to the film former in the example results in swelling of the vermiculite on absorption of waterThe active substances in the membrane are released, so that the soil property is gradually improved, the nutrient substances of the core material can be better protected, and the loss in the preservation process is avoided, so that the effective content of the camellia oleifera extract is higher.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. The organic fertilizer containing the camellia oleifera extract for promoting the growth of crops is characterized by comprising the following raw materials in parts by weight: 1-20 parts of camellia oleifera extract, 10-25 parts of nitrogenous fertilizer, 5-30 parts of phosphate fertilizer, 5-15 parts of potash fertilizer, 3-5 parts of binder, 0.1-5 parts of vermiculite and 1-10 parts of organic film forming agent;
the organic film forming agent is acrylamide;
the preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio, leaching, and performing rotary evaporation to obtain a powdery camellia extract;
the extractant is ethanol, and the feed-liquid ratio (w/v) is 1-20.
2. The organic fertilizer containing the camellia oleifera extract for promoting crop growth according to claim 1, wherein the camellia oleifera extract is a polyphenol compound.
3. The organic fertilizer containing the camellia oleifera extract for promoting crop growth according to claim 1, which is characterized by comprising at least one of the following technical characteristics:
the nitrogen fertilizer is one or more of urea, ammonium sulfate and ammonium phosphate;
the phosphate fertilizer is one or more of calcium superphosphate, calcium magnesium phosphate and phosphate rock powder;
the potassium fertilizer is one or more of potassium sulfate, potassium chlorate and potassium ore powder.
4. The organic fertilizer containing camellia oleifera extract for promoting crop growth according to claim 1, wherein the binder is bentonite.
5. The preparation method of the organic fertilizer containing the camellia oleifera extract for promoting crop growth, according to claim 1, comprising the steps of:
the method comprises the following steps: mixing the camellia oleifera extract, a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and a binder, and granulating to prepare a core material;
step two: uniformly mixing vermiculite and an organic film-forming agent to prepare a film-forming solution, spraying the film-forming solution on the core material, and drying to prepare an organic fertilizer; the preparation method of the camellia oleifera extract comprises the following steps:
degreasing and crushing camellia seeds, adding an extracting agent according to a material-liquid ratio, leaching, and performing rotary evaporation to obtain a powdery camellia extract; the feed-liquid ratio (w/v) is 1.
6. The use of the organic fertilizer as claimed in any one of claims 1 to 4 or the organic fertilizer obtained by the preparation method as claimed in claim 5 in iron-deficient crops.
CN202210223807.6A 2022-03-07 2022-03-07 Organic fertilizer containing camellia oleifera extract for promoting crop growth and preparation method thereof Active CN114436701B (en)

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