Peach trees are hi-light crops, especially in the flower bud differentiation period, and the flower bud differentiation is mainly completed in July-August. There are the following methods for pruning peaches in summer: 1. Twisting tips can control prosperous growth and improve lighting. Wherever the overwhelming shoots on the extension branch of the main branch and the shoots from the upper part of the canopy and the shoots drawn from the short cuts in the winter are cut, the tips of the shoots are to be twisted; the tip of the shoot is generally 30 cm long at the shoot. Left and right, not yet lignified, and the parts are held at 15 cm long. 2, topping the heart of too strong, until the pumping to 18 to 20 cm, picking the heart, to control the top edge of the new shoots occurred in the middle of the crown, to grow to 20 cm when the picking heart, in order to promote the development of lateral branches. 3, Xia pruning On the upper part of the canopy and the outer branches of the prosperous and prosperous, adopt the method of shear strength and weakness to control, but also cut off the dense branches and useless branches, in order to improve the lighting conditions within the crown, and promote flower bud differentiation. 4, pull branches on some young Wang tree, by pulling branches can ease the tree potential, cultivate the ideal tree shape, and promote the formation of early results; pull the branch angle, generally grasped at about 80 degrees is appropriate.
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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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