1, strengthen management, rational fertilization. Cotton fields should be controlled by nitrogen and phosphorus supplements, which can not only prevent the growth of cotton plants from over-proliferation, but also increase the disease resistance of cotton plants and prevent premature aging. Topdressing nitrogen fertilizer is best to add fulvic acid compound fertilizer, and with foliar fertilizer, such as spraying with 2% urea and 0.2% potassium dihydrogen phosphate or other foliar fertilizer. The cotton bolling period coincides with the rainy season and generally does not require irrigation. However, when it rains, it must be drained in time. 2, fine pruning, timely control. In the middle and late July, pruning should be promptly performed, empty branches, top hearts, and old leaves should be removed to increase the ventilation of the cotton fields, reduce the humidity, and reduce the occurrence of rotten bells. In line with the principle of multiple times, light weight and heavy weight, it is also effective to prevent the occurrence of debunkers in Jinhua by budding, early flowering, flowering and boll spraying, controlling cotton growth, coordinating fertilizer management, and promoting early maturing. One of the measures. 3, to strengthen the prevention and control of pests and diseases. More than 60% of cotton rotten bells are caused by diseases and insect pests. They can be sprayed with insecticides, focusing on the prevention and control of bollworm pests such as bollworms and red bollworms to reduce wounds and prevent infection by pathogens. Spraying carbendazim, A The bactericides such as stibuzucine and mancozeb include the prevention and treatment of red rot, pinkish pink disease, black fruit disease, and epidemic diseases, which reduce the chance of invading, spreading and multiplying germs and reducing the occurrence of rotten bells. 4, early picking rotten bell. During the period of the occurrence of the rotten bell, a thorough inspection of the field was conducted in time to find the rotten bells and large bells of insects, ready to be picked up and air-dried after sunny harvesting. The cotton bolls that were picked were soaked in 1% ethephon solution and then dried, which promoted rapid cracking of the bolls and improved fiber quality. The timely picking of rotten bells can not only greatly reduce the loss, but also prevent the damage of the rotten bell disease.
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.
Low Content Monomer,Rhodiola Rosea Extract,Kudzu Root Extract,Herbal Extract Apigenin Shaanxi HuiKe Botanical Development Co.,Ltd , https://www.oasis-hk.com
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.