Special plant source insecticide for rice and preparation method for special plant source insecticide for rice
A plant-derived insecticide, insecticide technology, applied in the direction of botanical equipment and methods, insecticides, plant growth regulators, etc., can solve the problems of polluted environment, finished product residue, large amount of waste residue, etc., and achieve economic effects Obvious, fast production, simple operation effect
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Embodiment 2
[0011] Embodiment 2, the synthetic method of further preventive insecticide is: get masterbatch for stand-by, get the dry soil after sieving for use, synthesize the masterbatch for use and dry soil after sieving for use, stir Evenly constitutes a preventive pesticide. The ratio of the masterbatch to the sieved dry soil is 1:2-3. When applying, use 5 kg of masterbatch per mu and 10-15 kg of sieved dry soil Stir evenly and sprinkle into the field. The preventive insecticide can effectively prevent rice stem borer, and the killing rate of overwintering larvae is higher than 98%.
Embodiment 3
[0012] Embodiment 3, the synthetic method of further described emergency type insecticide is: send described masterbatch to tertiary pulverization workshop, after ball mill pulverizes to particle diameter ≤ 150nm, add ethanol according to material-liquid ratio 1:2 , mix well, pack, store in the indwelling room, leave still at room temperature, shading, and airtight for 16 hours, and then get the finished product of emergency insecticide, which is transferred to the finished product storage. The finished product storage is 25 ℃ constant temperature, airtight, shading , the concentration of the ethanol is 80%. When applying, the application rate of the finished product per mu is 2 kg, mixed with water at 2:45 and shaken to form a suspension solution, which can be sprayed on the insect-infested parts.
Embodiment 4
[0013] Embodiment 4, the mechanism of described emergency insecticide is the mechanism of contact stomach poisoning, the described suspension solution is well combined with the whole plant of rice, and has amplifying effect to worm body contact and stomach poisoning, adding ethanol can promote The free state total alkali dissolves, and at the same time has a fumigation effect on the insect body, and can also break the surface protective layer of the insect body,
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