Biological orchard cleaning agent for apple orchards as well as preparation method and application method of biological orchard cleaning agent
A kind of orchard and biological technology, applied in the direction of botany equipment and methods, biocides, chemicals for biological control, etc., can solve the problems of apple safety production impact, etc., to achieve transparent appearance, easy degradation, and good stability Effect
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Embodiment 1
[0038] 1. Preparation of neem extract and oleander extract
[0039] Collect mature neem fruits, remove rotten and moldy seeds, bake in an oven at 50°C for 12 hours, stir once every 2 hours, take 100g (180 mesh) of dried and crushed neem seeds in a three-necked bottle with stirring, add 60v / v 1000ml of ethanol, stirring and extracting at 60°C for 6h, filtering, adding 600v / v ethanol 600ml to the filter residue, extracting twice under the same conditions, collecting three extracts, at 45-55°C / 0.085-0.09KPa The solvent was recovered to obtain 0.715 g of neem extract.
[0040] Wear gloves to collect oleander leaves in November, dry in an oven at 40°C for 8 hours, stir once every 1 hour, take 100 g of dried and crushed oleander leaves (100 mesh) in a three-necked flask with stirring and condenser , add 1500mL of 40v / v ethanol, reflux and stir at 80°C for 5h, filter, add 800mL of 40v / v ethanol to the filter residue, extract continuously twice under the same conditions, collect the ...
Embodiment 2
[0057] 1. Preparation of neem extract and oleander extract
[0058] Collect mature neem fruits, remove rotten and moldy seeds, bake in an oven at 60°C for 14 hours, stir once every 2 hours, take 100g (150 mesh) of dried and crushed neem seeds in a three-necked bottle with stirring, add 65v / v 1000ml of ethanol, stirred and extracted at 70°C for 6h, filtered, added 600ml of 65v / v ethanol to the filter residue, extracted twice under the same conditions, collected three extracts, and recovered the solvent at 55°C / 0.085KPa to obtain 0.71g neem extract.
[0059] Wear gloves to collect oleander leaves in November, dry in an oven at 45°C for 8 hours, stir once every 1 hour, take 100 g of dried and crushed oleander leaves (100 mesh) in a three-necked flask with stirring and condenser , add 2000mL of 50v / v ethanol, reflux and stir at 85°C for 5h, filter, add 800mL of 50v / v ethanol to the filter residue, extract continuously twice under the same conditions, collect three extracts, / 0.0...
Embodiment 3
[0074] 1. Preparation of neem extract and oleander extract
[0075] Collect mature neem fruits, remove rotten and moldy seeds, bake in an oven at 55°C for 14 hours, stir once every 2 hours, take 100g (200 mesh) of dried and crushed neem seeds in a three-necked bottle with stirring, add 70v / v 1200ml of ethanol, stirred and extracted at 65°C for 8h, filtered, added 700ml of 65v / v ethanol to the filter residue, extracted twice under the same conditions, collected three extracts, and recovered the solvent at 55°C / 0.085KPa to obtain 0.72g neem extract.
[0076] Wear gloves to collect oleander leaves in November (the oleander is highly toxic), dry in an oven at 50°C for 8 hours, stir once every 1 hour, take 100 g of dried and crushed oleander leaves (150 mesh) in the belt Add 2000mL of 50v / v ethanol to the three-necked flask with stirring and condenser, reflux at 85°C for 5h and extract with stirring, filter, add 800mL of 50v / v ethanol to the filter residue, and continuously extrac...
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