1. Clear seedlings. That is, when the peanut seedlings are basically released. Remove the weeds around the peanut seedlings first, then open the soil and expose the cotyledons to the ground. Be careful not to hurt the roots.
2. Fill the buried hole. About half a month after clearing, fill the hole again. The soil that was dumped at the time of clearing was buried back. Because at this time the nutrients in the cotyledons have been basically consumed.
3. Weeding and weed control: Peanuts are most afraid of mulch. They not only compete with peanut seedlings for nutrients, but also affect flower needles and affect yield. Therefore, one cultivator weeding and weeding should be carried out at the seedling stage, the planting stage, and the flowering stage, respectively. Grasp the principle of "shallow, deep and shallow", pay attention to prevent pressure seedlings of cultivator soil in seedling stage, damage to fruit needles in cultivator during flowering period.
4. Earthing: earthing after half an hour of flowering is conducive to the formation of flowers and needles under the needle, but not too thick, 3cm is appropriate.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Herbal Medicine,Ginger Extract Powder,Hawthorn Berry Extract,Lycium Berry Fruit Extract
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