Farmers in Shouguang City and Qingzhou City in Shandong province generally leave four main branches when pruning and leaving branches for sweet peppers. Recently, when the reporter interviewed Mengjiazhuang, Baocheng Street, Changle County, Shandong Province, he discovered that many vegetable farmers also kept four main branches, which was the same management method. However, the reporter found that when local farmers planted sweet peppers, they planted 1200-1500 acres of land, while farmers in Shouguang City and Qingzhou City had about 2,000 farmers per acre.
The difference in the density of sweet pepper colonization is large, and the number of main branches is the same, which intangibly reduces the yield. Because the same four branches are kept on each bell pepper, and 2000 trees and 1,200 trees are planted in one mu of land, the yield is worse on these 800 trees. Therefore, if 1200 bell peppers are to catch up with or exceed 2,000 trees in production, they must leave 1-2 root branches on the basis of leaving four main branches, so as to ensure production.
The sweet peppers are pruned to improve the ventilation and light conditions in the field, increase the photosynthetic efficiency, and promote the robust growth of the main branch. The nutrients can concentrate the supply of the resulting shoots, which is beneficial to the multi-junction peppers and the big peppers and improve the commercial quality of the pepper fruits. At the same time, it is also to allow each pepper branch and each fruit to have a reasonable growth space, ensuring that the sweet pepper is of good quality and high yield. Especially for the color pepper, fruit shape and coloring are directly related to the price and the income, which is very important. Therefore, in the sweet pepper management, reasonable pruning and leaving branches are indispensable.
Therefore, the pruning of sweet peppers first depends on the planting density, and cannot be applied to other people's experience. The growth space of sweet pepper on the land per mu is certain, and the number of shoots suitable for growing is also certain. The practice of planting shows that the number of main branches of sweet pepper per mu is kept between 5000-7000. In other words, when the planting density is 2000 plants, it is appropriate to leave 3-4 main branches per plant; when planting 1200 plantings per acre, two strong branches are left on the basis of leaving 4 main branches per plant.
Low content monomer plant extract, main content 1%-50%. Including but not limited to Pu-erh tea extract 40%, rhodiola rosea extract 1%, 3%, pueraria root extract 30%, 40%, celery extract 5%, salvia miltiorrhiza extract 5%, 10%, burdock seed extract, salicin 5%, aloe vera extract, gynost' pentaphyllum extract 20%, green tea extract, ginseng extract, chlorogenic acid extract.
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.
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