0.3% matrine insecticide and its preparation method
A technology of insecticide and matrine, which is applied in the field of plant insecticide and its preparation, can solve the problems of slow effect and slow progress, and achieve the effect of advanced production technology, low toxicity contact and stomach toxicity
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Embodiment 1
[0032] The present embodiment is made up of the raw material medicine of following percentage by weight:
[0033] Sophora flavescens 30%, crane lice 15%, neem 10%,
[0034] 15% wild cotton, 15% pyrethrum, 15% saponins.
[0035] Its preparation method comprises the following steps:
[0036] a. After cleaning and pulverizing the above-mentioned Chinese herbal medicines, add them into a multi-functional extraction tank, then add three times the amount of 80% methanol solution as a solvent at a time, and carry out reflux extraction by heating with steam. When the content of medicinal materials in the extract reaches a certain specific gravity , put the extract into the storage tank, add methanol solution to the multi-functional extraction tank again for reflux extraction, repeat the above process three times and merge together for concentration;
[0037] b. The extract enters the double-effect evaporator from the extract liquid storage tank for evaporation and concentration, the...
Embodiment 2
[0040]The present embodiment is made up of the raw material medicine of following percentage by weight:
[0041] Sophora flavescens 35%, crane lice 20%, neem 15%,
[0042] 10% wild cotton, 10% pyrethrum, 10% saponins.
[0043] The preparation method of this embodiment is the same as that of Example 1.
Embodiment 3
[0045] The present embodiment is made up of the raw material medicine of following percentage by weight:
[0046] Sophora flavescens 40%, crane lice 25%, neem 20%,
[0047] 5% wild cotton, 5% pyrethrum, 5% saponins.
[0048] The preparation method of this embodiment is the same as that of Example 1.
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