Deep ploughing and soil improvement: The soil quality of the new vegetable field is generally poor. The cultivated layer is only about 15 cm, which is changed to vegetable soil. Due to the increase in the number of planting ridges and the consumption of nutrients, the tillage layer should be gradually deepened to improve its physical properties. The deep ploughing time can be arranged when the summer and autumn vegetables leave the garden, each of which is turned twice, so that the tillage layer reaches 25~40 cm.
Adding organic fertilizer: To improve the soil structure, it is necessary to have substances that can stabilize the structure, such as improvers, urban organic waste, and organic fertilizer. The application of organic fertilizer can not only supply the needs of vegetables for nitrogen, phosphorus and potassium, but also promote the formation of soil aggregate structure, improve the ability of water retention and fertilizer retention and increase the buffer capacity of soil. It is the material guarantee for fertilizing new vegetable fields. Great attention should be given.
Planting legume green manure: legume green manure fixes the nitrogen in the atmosphere. After picking the edible part, the straw is returned to the field, especially the fresh stems and leaves such as peas and broad beans are pressed to increase the soil organic matter and nitrogen content.
Reasonable rotation: continuous cropping of vegetables can lead to soil acidification, salinization and disease spread. In the area of ​​grain-changing vegetables, special attention should be paid to rational rotation, using the differences in the absorption of different varieties of vegetables, slowing the excessive consumption of certain nutrients, avoiding or alleviating the above problems, so as to give full play to the production potential of the new vegetable fields. For example, in the rotation, some mustard, peas, etc. can be used to absorb phosphorus and potassium that cannot be used by ordinary vegetables, and 14% to 34% are re-used in the soil in the available state to improve phosphorus and potassium nutrition for the sorghum vegetables. situation. There are many ways to rotate, but one season of legumes should be arranged in the rotation.
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Drug intermediates -Pharmaceutical intermediates: A material that is produced during a process step of the drug substance and must undergo further molecular changes or refining before it becomes a drug substance. The intermediates can be separated or not separated.
Active Pharmaceutical Ingredient (APIS)(or Drug Substance) : Active Pharmaceutical Ingredient (API)(or Drug Substance) : Any substance or mixture of substances intended to be used in the manufacture of pharmaceutical products and, when used in pharmaceutical products, to be an active ingredient in pharmaceutical products. Such substances have pharmacological activity or other direct effects in the diagnosis, treatment, symptom relief, management or prevention of disease, or can affect the function and structure of the body. As can be seen from the definition, the Intermediates APIS is a key product of the previous process of manufacturing the API and has a different structure from the API
Finally, for example, amoxicillin capsules are called preparations, amoxicillin is called APIS, and 6-APA is called Veterinary Intermediates APIS.
Penicillin potassium for injection is called preparation, penicillin potassium is called Veterinary raw materials, and green potassium industrial salt is called intermediate
Drug intermediates,Pharmaceutical intermediates,Intermediates APIS
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