Water and fertilizer management was poured back to Qingshui in early March. After the greening, the plants are bolted. At this time, two tasks must be done. First, the total onion of the onion should be removed when it is not open to promote the development and growth of the buds. If the buds are removed too early, the growth of the buds will affect the growth; Too late, flowering consumes too much nutrients and affects yield. Second, some plants are accompanied by buds when they are squirted. At this time, regardless of the flower buds, the flower buds (ie flower buds) of the plants that ejector the teeth are removed early to facilitate high yield. When removing the flower buds, be sure to protect the flowers and moss. Because the flower moss plays a role in supporting the buds of the buds, in order to prevent lodging, and is an important assimilated organ, the photosynthesis intensity is 4 times higher than that of the same leaves, and a large amount of nutrients are produced for the growth of the buds. After the end of March, pay attention to spraying ferrous sulfate, ammonium citrate, and copper sulphate 1000 times, and spray it 3 times every 8 days, which can significantly increase production. In the first ten days of April, 15 kg of urea was applied in combination with watering of 667 square meters to keep the soil dry and wet. The green onion transplanted by digging medium-sized ditch must be cultivated 1 or 2 times, and can grow about 10 cm of scallions.
Second, the control of pest and disease purple spot disease can be alternately sprayed with 1.5% bacteria 800-1000 times liquid or 1600 times solution of bacteria, and sprayed once every 7 days, even spraying 2 to 3 times. The diseased field can be compounded with two kinds of drugs. If a green onion horse occurs, it can be sprayed 1000 times with 毖nak or 1000 times with bevac. If the root radish is found, it can be irrigated with 1.1% matrine 500 times or 90% trichlorfon 600-1000 times.
Intermediate – Intermediate: A material produced during a drug substance processing step that must undergo further molecular modification or refinement to become a drug substance. Intermediates may or may not be isolated. Intermediates are the key products of the previous process of making APIs, which are different in structure from APIs.
for example:
Amoxicillin capsules are called preparations, amoxicillin is called API, and 6-APA is called intermediate.
Ceftriaxone sodium powder is called preparation, sterile ceftriaxone sodium is called API, and 7-ACA is called intermediate.
Our company specializes in providing key intermediates for various APIs
Intermediate is a very important type of fine chemical products. Its essence is a type of "semi-finished product", which is an intermediate product in the production of certain products. For example, if a product is to be produced, it can be produced from intermediates, saving costs and reducing It is widely used in the synthesis of medicines, pesticides, coatings, dyes and spices. In the field of medicine, intermediates are an important link in the industrial chain of the pharmaceutical industry. They are used for some chemical raw materials or chemical products in the process of drug synthesis. In a word, they are used to produce APIs.
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