Plant molluscicide as well as preparation method and application thereof
The technology of a molluscicide and a plant is applied in the field of the preparation of a molluscicide for killing Fushou snails and the preparation of a plant molluscicide. The effect of low cost, low price and low toxicity of snail control
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Embodiment 1
[0049] A plant molluscicide, which consists of the following components by weight percentage:
[0050] Spirocarb 8%
[0051] The solid residue after extraction of snail carburage with tea meal is 92%.
[0052] The preparation method of above-mentioned plant molluscicide comprises the steps:
[0053] 1) Select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and use No. 6 solvent oil to remove the residual oil in the tea meal (the oil content is lower than 2%).
[0054] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to a 12% sodium hydroxide solution whose weight is 5.5 times the weight of the tea meal powder, and soak at 95°C After 4.5 hours to obtain the soaking solution, add alkaline protease with a weight of 12.5% of the soaking solution to the soaking solution, soak at 60°C for 12 hours, filter to obtain the filtrate and filter cake, dry the filter cake to obtain tea The solid residue after extracting snai...
Embodiment 10
[0110] A plant molluscicide, which consists of the following components by weight percentage:
[0111] Spirocarb 20%
[0112] 80% of the solid residue after extracting snail carburage with tea meal.
[0113] The preparation method of above-mentioned plant molluscicide comprises the steps:
[0114] 1) Select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and use No. 6 solvent oil to remove the residual oil in the tea meal (the oil content is lower than 2%).
[0115] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to an 18% sodium hydroxide solution whose weight is 5 times the weight of the tea meal powder, and soak at 105°C After 4 hours, the soaking solution was obtained, and then alkaline protease with a weight of 5% of the soaking solution was added to the soaking solution, soaked at 55°C for 14 hours, filtered to obtain the filtrate and filter cake, and the filter cake was dried to obtain tea The solid resid...
Embodiment 11
[0119] A plant molluscicide, which consists of the following components by weight percentage:
[0120] Spirocarb 40%
[0121] 60% of the solid residue after extracting snail carburage with tea meal.
[0122] The preparation method of above-mentioned plant molluscicide comprises the steps:
[0123] 1) select the tea meal whose content of pentacyclic triterpenoids is 8%-12%, and remove the residual oil in the tea meal with No. 6 solvent oil (the oil content is lower than 2%);
[0124] 2) Pulverize the degreased tea meal to obtain tea meal powder, then add the tea meal powder to a 5% sodium hydroxide solution whose weight is 6 times the weight of the tea meal powder, and soak at 85°C After 4 hours, the soaking liquid was obtained, and then alkaline protease with a weight of 20% of the weight of the soaking liquid was added to the soaking liquid, soaked at 75°C for 10 hours, filtered to obtain the filtrate and filter cake, and the filter cake was dried to obtain tea The solid r...
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