Trichoderma harzianum organic fertilizer and preparation method thereof

Abstract

The invention relates to the field of fertilizers, in particular to a trichoderma harzianum organic fertilizer and a preparation method thereof. The organic fertilizer comprises the following components in percentage by weight: 20%-30% of trichoderma harzianum, 20%-30% of cow dung, 5%-25% of potassium humate, 5%-25% of ammonium humate, 10%-30% of plant ash, 0.01%-1% of oxyenadenine, 0.01%-1% of enadenine and the balance of an adhesive. The trichoderma harzianum organic fertilizer prepared by the invention is mainly used for preventing and treating leaf fungal diseases such as powdery mildew, gray mold, downy mildew, leaf mold, leaf spot disease and the like of crops such as vegetables, fruit trees, flowers and the like.

Description

[0001] manual Technical Field

[0002] This invention relates to the field of fertilizer technology, and in particular to a Trichoderma harzianum organic fertilizer and its preparation method. Background Technology

[0003] Soil is the foundation of plant growth. Recent studies have shown that continuous cropping not only leads to soil-borne diseases but also hinders plant growth and development, reduces yield, and degrades quality. Research also indicates that long-term, excessive fertilizer application leaves numerous chemical residues in the soil, damaging its organic composition, causing soil salinization, decreased fertility, and reduced fertilizer utilization. Furthermore, this poses a significant threat to the environment, severely hindering the development of green and sustainable agriculture.

[0004] With rising living standards, the demand for green, pollution-free, and organic agricultural products is growing rapidly. Meanwhile, the excessive use of chemical fertilizers and pesticides in recent years has led to concerns about the safety of agricultural products and increased export difficulties. This has posed a serious challenge to the long-standing production method that relies excessively on chemical fertilizers to increase agricultural output. Furthermore, the persistently high price of chemical fertilizers in recent years has fueled the rapid growth in demand for high-quality organic fertilizers.

[0005] Trichoderma harzianum is a fungus with high biocontrol value. It can parasitize various plant pathogens and improve the rhizosphere soil microecological environment. It effectively inhibits gray mold, leaf mold, wilt, and brown spot diseases in crops mainly through nutrient competition, spatial competition, and hyperparasitism. Trichoderma harzianum is a fungus found in almost all soils. It grows rapidly and is highly adaptable to harsh soil conditions. It is commonly used for foliar application, seed treatment, and soil treatment to suppress various diseases caused by fungal pathogens. Trichoderma harzianum plays an important role in soil microenvironment, disease control, and root growth.

[0006] Hydroxylenic adenine and enyl adenine are plant growth regulators that can effectively promote the balanced growth of plant roots and plants, promote the differentiation of plant flower buds, especially female flowers, protect flowers and fruits, prevent fruit drop, and resist premature aging. They can also promote fruit enlargement, quality formation, and increase crop yield. Summary of the Invention

[0007] In order to more effectively improve the existing planting environment and achieve healthier plant growth, this invention seeks effective ways to improve soil conditions. It has been exploring the use of biological agents to improve the planting soil environment, enhance plant disease resistance, reduce the use of pesticides and fertilizers, and improve product quality.

[0008] This invention provides a Trichoderma harzianum organic fertilizer, wherein the Trichoderma harzianum organic fertilizer comprises, by weight percentage: 20%-30% Trichoderma harzianum, 20%-30% cow manure, 5%-25% potassium humate, 5%-25% ammonium humate, 10%-30% wood ash, 0.01%-1% hydroxyadenine, 0.01%-1% adenine, and binder to make up 100%.

[0009] Another aspect of the present invention provides a method for preparing Trichoderma harzianum organic fertilizer, comprising the following steps:

[0010] (1) Pulverize Trichoderma harzianum, cow dung, potassium humate, ammonium humate, wood ash, hydroxyadenine, adenine, and adhesive separately;

[0011] (2) Weigh each product obtained in step (1) according to the weight ratio, mix them thoroughly and add them to a granulator for granulation. The particle size of the granulated particles is 2-6 mm. Dry them until the moisture content is below 10% to obtain the finished product of Trichoderma harzianum organic fertilizer.

[0012] As a preferred further technical solution, in step (1), Trichoderma harzianum, cow dung, wood ash, ammonium humate, potassium humate, hydroxyadenine, adenine, and adhesive are pulverized to 60 mesh.

[0013] As a preferred further technical solution, the adhesive is attapulgite or bentonite.

[0014] A further technical solution is that the granulator in step (2) is a drum granulator or an extrusion granulator.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1) The Trichoderma harzianum organic fertilizer prepared by this invention has high organic matter, nitrogen, phosphorus and potassium content, and also contains a variety of trace elements. It is nutritionally comprehensive, which helps to reduce the amount of inorganic fertilizer used, improve soil physical and chemical properties, retain water and fertilizer, provide long-term fertility, enrich the soil and improve the crop's stress resistance.

[0017] 2) The *Trichoderma harzianum* organic fertilizer prepared in this invention can improve the rhizosphere soil microecological environment, mainly through nutrient competition, spatial competition, and hyperparasitism, effectively inhibiting gray mold, leaf mold, wilt, and brown spot diseases in crops. Besides its primary function of biological control, *Trichoderma harzianum* organic fertilizer also promotes plant growth and induces increased disease resistance in plants. This helps reduce the use of pesticides and fertilizers, aligning with the current national advocacy for reducing the use of chemical fertilizers and pesticides in agricultural production.

[0018] 3) The raw materials used in this invention are plant-derived and natural products with extremely low heavy metal content, no hormones, and will not pollute the environment.

[0019] 4) The organic fertilizer prepared by the present invention has a simple process, is easy to industrialize, and has a high degree of commercialization. It can be widely used in the production of pollution-free green agricultural products, and is especially suitable for organic agriculture. Detailed Implementation

[0020] To better illustrate the essence of the present invention, the present invention will be described in detail below with reference to specific embodiments, but it is not limited thereto.

[0021] Example 1

[0022] A method for preparing Trichoderma harzianum organic fertilizer, characterized in that the formula contains the following raw materials in weight percentage: Trichoderma harzianum 20%, cow dung 20%, potassium humate 10%, ammonium humate 10%, wood ash 25%, hydroxyadenine 0.05%, adenine 0.05%, and attapulgite soil to make up 100%.

[0023] The above-mentioned method for preparing Trichoderma harzianum organic fertilizer is as follows:

[0024] 1) Pulverize Trichoderma harzianum, cow dung, potassium humate, ammonium humate, wood ash, hydroxyadenine, adenine, and attapulgite to 60 mesh respectively.

[0025] 2) Weigh the products obtained in step 1) according to the weight ratio, mix them thoroughly, and then add them to an extrusion granulator for granulation. The particle size of the granulated particles should be 2-6 mm. Dry them until the moisture content is below 10% to obtain the finished product of Trichoderma harzianum organic fertilizer.

[0026] Example 2

[0027] A method for preparing Trichoderma harzianum organic fertilizer, characterized in that the formula contains the following raw materials in weight percentage: Trichoderma harzianum 25%, cow dung 25%, potassium humate 8%, ammonium humate 8%, wood ash 20%, hydroxyadenine 0.02%, adenine 0.08%, and attapulgite soil to make up 100%.

[0028] The above-mentioned method for preparing Trichoderma harzianum organic fertilizer is as follows:

[0029] 1) Pulverize Trichoderma harzianum, cow dung, potassium humate, ammonium humate, wood ash, hydroxyadenine, adenine, and attapulgite to 60 mesh respectively.

[0030] 2) Weigh the products obtained in step 1) according to the weight ratio, mix them thoroughly, and then add them to an extrusion granulator for granulation. The particle size of the granulated particles should be 2-6 mm. Dry them until the moisture content is below 10% to obtain the finished product of Trichoderma harzianum organic fertilizer.

[0031] Example 3

[0032] A method for preparing Trichoderma harzianum organic fertilizer, characterized in that the formula contains the following raw materials in weight percentage: Trichoderma harzianum 30%, cow dung 30%, potassium humate 6%, ammonium humate 6%, wood ash 15%, hydroxyadenine 0.08%, adenine 0.02%, and bentonite to make up 100%.

[0033] The above-mentioned method for preparing Trichoderma harzianum organic fertilizer is as follows:

[0034] 1) Pulverize Trichoderma harzianum, cow dung, potassium humate, ammonium humate, wood ash, hydroxyadenine, adenine, and bentonite to 60 mesh respectively;

[0035] 2) Weigh the products obtained in step 1) according to the weight ratio, mix them thoroughly, and then add them to an extrusion granulator for granulation. The particle size of the granulated particles should be 2-6 mm. Dry them until the moisture content is below 10% to obtain the finished product of Trichoderma harzianum organic fertilizer.

[0036] The following is a further effect test on the Trichoderma harzianum organic fertilizer prepared in the above examples, focusing on its impact on vegetable (tomato) growth, disease resistance, and pest resistance.

[0037] Equal amounts of Trichoderma harzianum organic fertilizer prepared in Examples 1-3 were applied to tomato cultivation. A control group (CK) was set up with no fertilizer applied. Organic fertilizer made from traditional animal excrement was used as Comparative Example 1, and organic fertilizer made from traditional crop straw was used as Comparative Example 2 (the amount of fertilizer applied to the comparative examples was the same as that in Examples 1-3). All experimental groups used tomato seedlings with similar growth and were cultivated under the same conditions. After 30 days of cultivation, the survival rate, plant height, disease incidence, and pest incidence of tomatoes were detected and statistically analyzed.

[0038]

[0039] Table 1. Effects of the Trichoderma harzianum organic fertilizer of this invention on the growth of vegetables (tomatoes)

[0040] As can be seen from Table 1, the Trichoderma harzianum organic fertilizer prepared by this invention can significantly improve the survival rate of tomatoes, promote tomato growth, and reduce the incidence of tomato diseases and pests.

[0041] The above embodiments are only used to explain the present invention. The implementation of the present invention is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and are included within the protection scope of the present invention.

Claims

1. A Trichoderma harzianum organic fertilizer and its preparation method, characterized in that, The formula, by weight percentage, is as follows: 20%-30% Trichoderma harzianum, 20%-30% cow dung, 5%-25% potassium humate, 5%-25% ammonium humate, 10%-30% wood ash, 0.01%-1% hydroxyadenine, 0.01%-1% adenine, and binder to make up to 100%.

2. The method for preparing Trichoderma harzianum organic fertilizer according to claim 1, comprising the following steps: (1) Pulverize Trichoderma harzianum, cow dung, potassium humate, ammonium humate, wood ash, hydroxyadenine, adenine, and adhesive separately; (2) Weigh each product obtained in step (1) according to the weight percentage, mix them thoroughly, and then add them to a granulator for granulation. The particle size of the granulated particles should be 2-6 mm. Dry the particles until the moisture content is below 10% to obtain the finished product of Trichoderma harzianum organic fertilizer.

3. The method for preparing Trichoderma harzianum organic fertilizer according to claim 1, characterized in that: The adhesive is bentonite or attapulgite.

4. The method for preparing Trichoderma harzianum organic fertilizer according to claim 2, characterized in that: In step (1), Trichoderma harzianum, cow dung, wood ash, ammonium humate, potassium humate, hydroxyadenine, adenine, and adhesive are pulverized to 60 mesh.

5. The method for preparing Trichoderma harzianum organic fertilizer according to claim 2, characterized in that: The granulator in step (2) is an extrusion granulator or a drum granulator.

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