CN100479661C - Environment-protective crop alimentary bacteriocide and application thereof - Google Patents

Abstract

The invention relates to an environment-friendly crop nutrition fungicide and its preparation method and application. The fungicide components include iodine, potassium iodide, salicylic acid, benzoic acid, emulsifier, solvent and the like. The fungicide can be sprayed, root-irrigated, and applied to plants. The fungicide is easy to prepare, has low cost, is green and environment-friendly, has high efficiency and broad spectrum, strong permeability, and rapid and thorough sterilization.

Description

A kind of crop nutrient fungicide and its application

1. Technical field

The invention relates to a high-efficiency and environment-friendly crop nutrition fungicide used in planting industry and its preparation method and application, belonging to the technical field of agricultural chemistry.

2. Background technology

Improving crop yields and reducing the occurrence of pests and diseases has always been a worldwide problem. The problems facing my country's agriculture are not only insufficient food, but also the decline in the quality of agricultural products caused by excessive use of chemical fertilizers, pesticides and antibiotics, and even environmental and food pollution. question. In actual production, in order to control the occurrence of various fungal, bacterial, and viral diseases and reduce the huge losses caused by diseases to agriculture, it largely depends on the use of chemically synthesized pesticides and antibiotics. On protected lands, in order to obtain immediate results, farmers often use pesticides at high frequency and in large doses, even at the expense of using highly toxic pesticides that are banned by the state. The safety of agricultural products has attracted more and more attention from the government and people. Preventing crop diseases, improving the quality of agricultural products, and solving drug residues are urgent problems in the planting industry. High-efficiency and environment-friendly crop nutrient fungicide is a biologically active agent composed of plant nutrients and organic acids. It is non-toxic, non-resistant, and has no residue. It can be used as a substitute for agricultural fungicides and antibiotics in the planting industry.

3. Contents of the invention

Aiming at the drawbacks of extensive use of pesticides and antibiotics in the planting industry, the invention provides a high-efficiency and environment-friendly crop nutrition fungicide and a preparation method thereof.

The invention provides a preparation and application method of an environment-friendly crop nutrition fungicide.

The environment-friendly crop nutrient bactericide of the present invention is made up of following components, all are percentage by weight:

Iodine 2-2.5%

Potassium iodide 1-1.2%

Salicylic acid 8-12%

Benzoic acid 8-12%

Emulsifier 8-10%

Solvent 2-6%

Surfactant 2-6%

Stabilizer 2-6%

Deionized water balance.

The above-mentioned emulsifiers are emulsifiers for acidic fungicides, such as 10204C, Nongru 6202-B;

Above-mentioned solvent is ethanol or xylene;

Above-mentioned tensio-active agent is sodium dodecylsulfonate;

The aforementioned stabilizer is urea.

The preparation method of environment-friendly type crop nutrition fungicide of the present invention, the steps are as follows:

The above-mentioned components are prepared in two reaction kettles in proportion, and the sequence is not limited.

Reactor A: Heat water and solvent to 40-55°C, then add iodine and potassium iodide, stir for at least 2 hours, and lower the temperature to room temperature for use.

Reactor B: Heat water and emulsifier to 50-65°C, then add salicylic acid and benzoic acid, stir evenly and lower to normal temperature.

The solutions in the AB reactor are mixed and stirred, and at the same time, surfactants and stabilizers are added in sequence, and the uniform solution obtained after standing still is the environmentally friendly plant nutrient fungicide.

The environment-friendly crop nutrient fungicide of the present invention can be used as a substitute for agricultural fungicides and antibiotics in planting to prevent and control diseases caused by bacteria, fungi and viruses, enhance the disease resistance of plants, and reduce the amount of nitrogen fertilizer at the same time.

The application of the above-mentioned environment-friendly nutritional fungicide is used in the following way:

(1) Spray on plant stems and leaves,

(2) root irrigation combined with spraying is applied to the roots and stems and leaves of plants,

(3) Apply to the branches of plants.

The specific usage of the product is shown in the table below:

The main diseases that the high-efficiency and environment-friendly nutritional fungicide of the present invention is used for prevention and treatment are as follows:

1. Vascular diseases of crops, such as bacterial wilt, verticillium wilt, fusarium wilt, bunchy top disease, vine blight, etc.

2. Fungal and bacterial diseases of crops, such as rice blast, rice sheath blight, cotton anthracnose, cotton blight, wheat powdery mildew, and wheat rust.

3. Viral diseases of crops, such as mosaic disease, stripe leaf blight, small leaf disease, yellowing disease, dwarfing disease, etc. Because the components of fungicides exist as anions, they can move freely in crops, and they also have the effect of chasing and killing viruses, destroying virus RNA and preventing their replication, so this product is an excellent fungicide for preventing viral diseases.

This product cannot be used for leguminous crops.

The raw material characteristic and the function that the present invention selects are as follows:

1. Iodine: Iodine is an efficient broad-spectrum disinfectant in medicine, but its poor water solubility limits its application. Iodine-containing preparations such as iodine tincture are utilized due to the high solubility of iodine in the medium, but such iodine preparations are highly irritating and poor in stability. After forming a complex with iodine through a certain co-solvent and carrier, it has excellent physical and chemical properties and biochemical properties, has a broad-spectrum bactericidal effect, and has stable and mild performance. Iodine is a beneficial element needed by crops, which can promote crop growth and improve crop quality.

2. Salicylic acid. Also known as hydroxybenzoic acid, it is generally used in industrial antifungal agents and is non-toxic to humans.

3. Benzoic acid. Also known as benzoic acid, it is generally used as a food preservative. The oral LD50 of benzoic acid in rats is 2530mg/kg. It is proved by C14 tracing that benzoic acid does not accumulate in the human body, most of it combines with glycine to form benzoylglycine and is excreted in urine within 9-15 hours, and a small amount of benzoic acid can be combined with glucuronic acid to detoxify.

The technical feature of the present invention is to optimize the compatibility ratio of components such as iodine and organic acid and the formulation of the preparation, and at the same time determine the concentration for different usage methods and purposes.

The environment-friendly nutritional fungicide of the present invention mainly has the following excellent effects:

1. Green and environment-friendly biological agents: no burning, no pollution, no pollution, no residue, no resistance. After the crops use this product for 1-3 times, the crops will enrich iodine in the form of iodide into the vegetative and reproductive tissues of the crops, thus providing safe, green and iodine-rich food for human beings. It provides a very good fungicide for green and efficient agriculture and for increasing farmers' income.

2. Efficient and broad-spectrum: This product is very close to the lowest dose (1:85000) for killing various microorganisms, and it is irreversible killing. Therefore, various diseases caused by fungi, bacteria, viruses, spores, etc. have eradicating therapeutic effects, and do not produce resistance. At a very low effective concentration (1-2.5ppm), it has a strong effect of inhibiting the reproduction and growth of pathogenic bacteria; above 5ppm, it has an excellent bactericidal effect. When applied to various crops (except legumes), this product can effectively prevent and treat more than 100 kinds of diseases, which is the theoretical basis for its broad-spectrum and wonderful functions.

3. Rapid and thorough sterilization: When the concentration of active ingredients is above 25ppm, the inhibition rate of fungi and various bacteria of each subphylum can reach more than 95% within 15 seconds, and the inhibition rate of various viruses within 25 seconds up to 95%.

4. Strong permeability and thorough treatment: it has a penetrating effect on waxes, resins, pectins, fats, phospholipids, polysaccharides, proteins, nucleic acids, etc. Therefore, it has shown good efficacy in the application of eradicating many difficult diseases. Such as apple, jujube, cherry, pear tree rot, rough skin disease; peach, cherry, plum tree gum disease; citrus and southern fruit tree resin disease, etc.

4. Specific implementation

Example 1:

The environment-friendly crop nutrient fungicide consists of the following components, all in percentages by weight:

Iodine 2%

Potassium iodide 1.1%

Salicylic Acid 8%

Benzoic Acid 12%

Emulsifier 10204C 8% (purchased from Nanjing Zhongshan Chemical Factory)

Solvent ethanol 4%

Surfactant sodium dodecyl sulfonate 3%

Stabilizer urea 3%

Deionized water The balance.

The preparation method of the environment-friendly crop nutrient fungicide comprises preparing the above-mentioned components in two reaction kettles in proportion, and the sequence is not limited.

Reaction kettle A: Heat water and solvent to 50°C, then add iodine and potassium iodide, stir for at least 2 hours, and lower the temperature to room temperature for use.

Reactor B: Heat water and emulsifier to 55°C, then add salicylic acid and benzoic acid, stir evenly and lower to normal temperature.

The solutions in A and B reactors are mixed and stirred, and at the same time, surfactants and stabilizers are added in sequence, and the uniform solution obtained after standing still is an environmentally friendly plant nutrient fungicide.

Application of environment-friendly crop nutrient fungicide: Dilute the above-mentioned environment-friendly crop nutrient fungicide 2000 times and spray on leaves to prevent the occurrence of wheat powdery mildew, and spray once at wheat seedling stage and jointing stage. The incidence rate of the wheat field sprayed with this product was 3.7%, and the incidence rate of the control field was 56%. The preventive effect is very obvious.

Example 2:

The environment-friendly crop nutrient fungicide consists of the following components, all in percentages by weight:

Iodine 2.5%

Potassium iodide 1.2%

Salicylic Acid 12%

Benzoic acid 8%

Emulsifier 10204C 10% (purchased from Nanjing Zhongshan Chemical Factory)

Solvent xylene 5%

Surfactant Sodium Lauryl Sulfonate 4%

Stabilizer urea 3%

Deionized water balance.

The preparation method is the same as in Example 1.

Application of environmental-friendly crop nutrient fungicides: Dilute the above-mentioned environmentally-friendly crop nutrient fungicides by 1000 times and spray on leaves to treat rice sheath blight, and start spraying during the disease surge period, and spray once every 15 days. The cure rate of the paddy fields sprayed with this product is 97.6%, and the cure rate of the paddy fields sprayed with Jinggangmycin is 71.2%, and the effect is obviously better than that of Jinggangmycin commonly used at present.

Claims (4)

1, a kind of crop alimentary bactericide is made up of following component, all is weight percentage:

Iodine 2-2.5%

Potassium iodide 1-1.2%

Salicylic acid 8-12%

Benzoic acid 8-12%

Emulsifier 8-10%

Solvent 2-6%

Surfactant 2-6%

Stabilizing agent 2-6%

The deionized water surplus;

Above-mentioned emulsifier is acid bactericide emulsifier 10204C;

Above-mentioned solvent is ethanol or dimethylbenzene;

Above-mentioned surfactant is a dodecyl sodium sulfate;

Above-mentioned stabilizing agent is a urea.

2, the preparation method of the crop alimentary bactericide of claim 1, step is as follows:

Each component is prepared in two reactors respectively in proportion, and order is not limit;

Reactor A: water and solvent are heated to 40-55 ℃, add iodine and potassium iodide then, stir 2h at least, it is stand-by that temperature is reduced to normal temperature;

Reactor B: water and emulsifier are heated to 50-65 ℃, add salicylic acid and benzoic acid then, stir and reduce to normal temperature;

Solution in A and the B reactor is mixed and stir, add surfactant, stabilizing agent successively simultaneously, the homogeneous solution that obtains after leaving standstill is the crop alimentary bactericide of claim 1.

3, the application of the crop alimentary bactericide of claim 1 is applied to plant husbandry as disinfectant use in agriculture and antibiotic substitute, and the disease that control is caused by bacterium, fungi, virus strengthens the resistance against diseases of plant, reduces nitrogen fertilizer amount simultaneously.

4, as the application of nutritional fungicide as described in the claim 3, it is characterized in that one of occupation mode is following:

(1) spray on axis, leaf,

(2) irritate root knot and close spray application in plant roots and cauline leaf,

(3) be applied on the limb of plant.