Pear psylla nymph control composition based on plant source composite synergism and preparation method thereof

Abstract

The invention relates to the field of plant protection, in particular to a psylla chinensis nymph prevention and control composition based on plant source composite synergism and a preparation method thereof.The psylla chinensis nymph prevention and control composition specifically comprises cottonseed oil, an organosilicon surfactant, glycerol, white granulated sugar and ethyl alcohol, and the formula proportion of all the components is as follows: the use concentration of the cottonseed oil is 2-3.3 ml / L, the use concentration of the organosilicon surfactant is 1-3 ml / L, and the use concentration of the glycerol is 1-3 ml / L; the use concentration of the organic silicon surfactant is 100-300mL / L, the use concentration of the glycerol is 0.5-1mL / L, the use concentration of the white granulated sugar is 0.3-0.5 g / L, and the use concentration of the ethanol is 0.25-0.45 ml / L. The bactericidal composition is non-toxic, harmless to human, livestock and tree bodies after being used, remarkable in control effect on psylla chinensis, and has a certain cleaning effect on honeydew secreted by psylla chinensis. The pesticide is green, environment-friendly, free of residues and pollution and good in prevention and treatment effect.

Description

Technical Field

[0001] The invention relates to the field of plant protection, in particular to a pear psylla nymph control composition based on plant-based composite synergy and a preparation method thereof. Background Art

[0002] Pear psyllid belongs to the order Hemiptera, the family Psyllidae, and the genus Psyllid. It is a special pest of pear trees and has a significant impact on the yield and quality of pear trees. The adults and nymphs of pear psyllid suck the sap of pear trees, causing the leaves of pear trees to be deformed or curled, weakening the tree and affecting the normal growth of the plant. During the process of pear psyllid damage, a large amount of honeydew is secreted, which often wraps the nymphs of pear psyllid. By analyzing the breathing mechanism of pear psyllid nymphs in honeydew, it is found that the spiracles of pear psyllid nymphs have a hairy hydrophobic structure around their valves. The bubble membrane carried by the hydrophobic hairs allows them to breathe in the honeydew for a long time, making it impossible for the pesticide to penetrate the honeydew and contact the insect body, thereby reducing the control effect. In addition, honeydew is easily infected with mildew, which affects the photosynthesis of pear tree leaves and the commerciality of fruits. Due to the above characteristics of pear psyllid, chemical pesticides have to be used frequently and in high concentrations in production. The use of large amounts of chemical pesticides will not only increase environmental pollution and fruit safety risks, but also affect the survival of other organisms. The invention develops a formula targeting the breathing characteristics of pear psylla nymphs in honeydew. The formula, while cleaning the honeydew on pear tree leaves or branches, destroys the hydrophobicity of the hydrophobic hairs around the spiracles of the pear psylla nymphs, making it impossible for them to carry air films and forcing them to leave the honeydew. In addition, the formula contains ingredients that can block the spiracles of the pear psylla nymphs, causing them to suffocate and die. The formula is green, environmentally friendly, has no residue, no pollution, and has a high prevention effect on the pear psylla nymphs. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a pear psylla nymph control composition based on plant-based composite synergistics and a preparation method thereof, which is harmless to humans, livestock and trees, has a significant control effect on pear psylla, and has a certain cleaning effect on the honeydew secreted by pear psylla. While controlling pear psylla, the occurrence of mildew is reduced.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a pear psylla nymph control composition based on plant-based composite synergistic composition, the raw materials include cottonseed oil, silicone surfactant, white sugar, glycerol and ethanol, calculated according to the use concentration: Cottonseed oil 2-3.3ml / L, silicone surfactant 100-300mL / L, glycerol concentration 0.5-1mL / L, white sugar 0.3-0.5g / L, ethanol 0.25-0.45ml / L.

[0005] Preferably, calculated according to the use concentration, the following raw materials are included: Cottonseed oil 2ml / L, silicone surfactant 100mL / L, glycerol 0.5 mL / L, white sugar 0.3g / L, ethanol 0.25ml / L.

[0006] Preferably, calculated according to the use concentration, the following raw materials are included: Cottonseed oil 2.5ml / L; silicone surfactant 200mL / L, glycerol 0.75 mL / L, white sugar 0.4g / L, ethanol 0.35ml / L.

[0007] Preferably, calculated according to the use concentration, the following raw materials are included: Cottonseed oil 3.3ml / L; silicone surfactant 300mL / L, glycerol 1mL / L, white sugar 0.5g / L, ethanol 0.45ml / L.

[0008] A method for preparing a pear psylla nymph control composition based on plant-based composite synergistic effect comprises the following steps: a. After determining the amount of water used for spraying, add silicone surfactant at a concentration of 100-300 / L, glycerol at a concentration of 0.5-1mL / L, white sugar 0.3-0.5g / L, and ethanol 0.25-0.45ml / L to the water and mix to obtain mixture A; b. When used in field operations, add 2-3.3 ml / L cottonseed oil to the mixture A prepared in step 1 and use it immediately.

[0009] Compared with the prior art, the present invention has the following technical effects: the present invention is non-toxic, harmless to humans, livestock and trees after use, has a significant control effect on pear psylla, and has a certain cleaning effect on the honeydew secreted by pear psylla. The present invention is green, environmentally friendly, has no residue, no pollution, and has a good control effect. DETAILED DESCRIPTION

[0010] The technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the implementation cases of the present invention.

[0011] Example 1: Prepare 1L of water, add 2mL of cottonseed oil, 100mL of silicone surfactant, 0.3g of white sugar, 0.5ml of glycerol and 0.25ml of ethanol, and mix well to form the final insecticide formula.

[0012] Example 2: Prepare 1L of water, add 2.5ml of cottonseed oil, 2001mL of silicone surfactant, 0.4g of white sugar, 0.75ml of propylene glycol and 0.35ml of ethanol, and mix well to form an insecticide formulation.

[0013] Example 3: Prepare 1L of water, add 3.3ml of cottonseed oil, 3001mL of silicone surfactant, 0.5g of white sugar, 1ml of propylene glycol and 0.45ml of ethanol, and mix well to form an insecticide formula.

[0014] The above is only an embodiment of the present invention. It should be pointed out that, in the technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. For example, changing the type of vegetable oil, the dilution multiple of the vegetable oil, and the concentration of the silicone surfactant should also be regarded as the protection scope of the present invention.

Claims

1. A pear psylla nymph control composition based on plant-derived composite synergistic effect, characterized in that: The raw materials include cottonseed oil, silicone surfactant, white sugar, glycerol and ethanol, calculated according to the usage concentration: Cottonseed oil 2-3.3ml / L, silicone surfactant 100-300mL / L, glycerol concentration 0.5-1mL / L, white sugar 0.3-0.5g / L, ethanol 0.25-0.45ml / L.

2. The pear psylla nymph control composition based on plant-derived composite synergistic effect according to claim 1, characterized in that: Calculated according to the usage concentration, including the following raw materials: Cottonseed oil 2ml / L, silicone surfactant 100mL / L, glycerol 0.5 mL / L, white sugar 0.3g / L, ethanol 0.25ml / L.

3. The pear psylla nymph control composition based on plant-derived composite synergistic effect according to claim 1, characterized in that: Calculated according to the usage concentration, including the following raw materials: Cottonseed oil 2.5ml / L; silicone surfactant 200mL / L, glycerol 0.75 mL / L, white sugar 0.4g / L, ethanol 0.35ml / L.

4. The pear psylla nymph control composition based on plant-derived composite synergistic effect according to claim 1, characterized in that: Calculated according to the usage concentration, including the following raw materials: Cottonseed oil 3.3ml / L; silicone surfactant 300mL / L, glycerol 1mL / L, white sugar 0.5g / L, ethanol 0.45ml / L.

5. A method for preparing a plant-based composite synergistic pear psylla nymph control composition according to any one of claims 1 to 4, characterized in that: The following steps are included: a. After determining the amount of water used for spraying, add silicone surfactant at a concentration of 100-300 / L, glycerol at a concentration of 0.5-1mL / L, white sugar 0.3-0.5g / L, and ethanol 0.25-0.45ml / L to the water to obtain mixture A; b. When used in field operations, add 2-3.3 ml / L cottonseed oil to the mixture A prepared in step 1 and use it immediately after preparation.