Composition for preventing bacterial wilt of tobacco
A technology of tobacco bacterial wilt disease and composition, which is applied in the directions of animal repellent, plant growth regulator, botanical equipment and method, etc. The effect of less dosage and cost saving
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Embodiment 1
[0032] A preparation method of a composition for preventing tobacco bacterial wilt, characterized in that the steps are as follows:
[0033] (1) Preparation of ginger extract: Dry the ginger, crush it, extract it twice with methanol at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature for later use;
[0034] (2) The preparation of the extract of Sapindus chinensis, dry Sapindus chinensis, crush, extract three times with water at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature spare;
[0035] (3) Preparation of spinosaurus extract: Dry spinosaurus, crush, extract three times with ethanol at a ratio of 1:3, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract. Save for later use;
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Embodiment 2
[0042] A preparation method of a composition for preventing tobacco bacterial wilt, characterized in that the steps are as follows:
[0043] (1) Preparation of ginger extract: Dry the ginger, crush it, extract it twice with methanol at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature for later use;
[0044] (2) The preparation of the extract of Sapindus chinensis, dry Sapindus chinensis, crush, extract three times with water at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature spare;
[0045] (3) Preparation of spinosaurus extract: Dry spinosaurus, crush, extract three times with ethanol at a ratio of 1:3, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract. Save for later use;
[0...
Embodiment 3
[0052] A preparation method of a composition for preventing tobacco bacterial wilt, characterized in that the steps are as follows:
[0053] (1) Preparation of ginger extract: Dry the ginger, crush it, extract it twice with methanol at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature for later use;
[0054] (2) The preparation of the extract of Sapindus chinensis, dry Sapindus chinensis, crush, extract three times with water at a ratio of 1:5, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract, and store it at low temperature spare;
[0055] (3) Preparation of spinosaurus extract: Dry spinosaurus, crush, extract three times with ethanol at a ratio of 1:3, filter, and concentrate the filtrate under reduced pressure with a rotary evaporator below 30°C to obtain an extract. Save for later use;
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