Pesticide for being sprayed by unmanned plane and preparation method thereof

[0053] Embodiment 1: The present invention is used for the pesticide A of unmanned aerial vehicle spraying

[0054] (1) the degree of alcoholysis is 88%, and the polyvinyl alcohol raw material that average molecular weight is 2-4 ten thousand is dissolved in water, and the percentage by weight of polyvinyl alcohol in the obtained glue is 30%;

[0055] (2) The glue was left to stand for defoaming for 5 hours, poured into a mold for molding, and then demolded after drying at 100°C for 4 hours to obtain an open capsule; after testing, the thickness of the polyvinyl alcohol film on the outer layer of the capsule was 1500 μm , the tensile strength is 5MPa;

[0056] (3) 194g trichlorfon (dimethyl-(2,2,2-trichloro-1-hydroxyethyl) phosphate) powder and 6g activated carbon (200-400 μm in particle size) are mixed into a pharmaceutical composition, and The pharmaceutical composition is put into the cavity of the capsule, filled with gas and sealed, the pressure inside the capsule is 0.15-0

[0058] Embodiment 2: The present invention is used for the pesticide B of unmanned aerial vehicle spraying

[0059] (1) 150g alcoholysis degree is 95%, the average molecular weight is the polyvinyl alcohol raw material of 40,000-60,000, 2.7g butyl benzyl phthalate, 0.7g cross-linked polyvinylpyrrolidone and 7g polyoxyethylene polyoxypropylene Add water to alcohol amine ether until 1000g is dissolved to obtain glue;

[0060] (2) Leave the glue to stand for defoaming for 6 hours, pour it into a mold and mold it, dry it at 50°C for 10 hours, and demould it to obtain an open capsule; after testing, the thickness of the polyvinyl alcohol film on the outer layer of the capsule is 500 μm , the tensile strength is 4MPa;

[0061] (3) Mix 95g trichlorfon (dimethyl-(2,2,2-trichloro-1-hydroxyethyl) phosphate) powder with 5g starch to form a pharmaceutical composition, and put the drug into the cyst cavity The composition is filled with gas and sealed, the pressure inside the capsule is 0.4

[0066] Use the same type of UAV to load pesticides A-C for pesticide application. The objects of application are three farmlands with similar geographical locations and an area of ​​20 mu. Among them, pesticides A and B are sprayed while irrigating. Track and observe the application process, determine the application time, and observe the application effect.

[0067] (1) Application process:

[0068] Ⅰ. Pesticide A: Before spraying, divide each acre into four areas equally, and drones only apply pesticides at the center of each area. After the pesticide falls to the ground, the water-soluble film on its outer layer is dissolved and damaged by water, and the drug is sprayed out from the damaged part. With the spraying of the drug, the crack of the damaged part gradually grows, and finally cracks completely to spray the drug around, and the distance of the drug sprayed outward The sprayed medicine is dissolved and diluted with water, and is blocked by the crops during the spraying