The outside temperature has dropped below 5 ° C, and the greenhouse is still not covered with the insulation quilt. Once the cold current is encountered again, the greenhouse vegetables lacking the cover must be damaged by freezing. Encountered a cold current on a cloudy day, and vegetables were chilled or even frozen. After the bad weather, the price of vegetables is high.
Temperature is the basis of greenhouse vegetable growth. Eggplant fruits, melons and other vegetables are warm-loving crops. The suitable growth temperature is 20 ℃ ～ 30 ℃ during the day and 15 ℃ ～ 20 ℃ at night. Once the night temperature is lower than 10 ℃, cold damage will occur, which will obviously affect the growth of vegetables. , Increase the rate of deformed flowers, reduce vegetable yield and quality.
Insufficient heat preservation, frequent chilling damage, slow growth, low yield, and poor quality are the main problems in winter in many vegetable producing areas, and they are also the key factors affecting benefits. It is necessary to use all the resources at hand and take all necessary means to ensure that the temperature in the shed is appropriate, so as to increase the yield and efficiency of vegetables. Newly-built greenhouses have better thermal insulation in recent years. However, it is still necessary to pay attention to the selection of the covering and reasonable covering to avoid affecting the thermal insulation of the greenhouse. The old shed has relatively poor thermal insulation, especially the shed walls made of hollow bricks and other bricks. The thermal insulation performance is poor. Vegetable farmers can cover corn stalks and insulation films on the back wall and gable. Thereby enhancing the thermal insulation of the shed. Only when the temperature in the shed is high, vegetables can grow normally, and other agricultural work has room to play.
Related facilities should be checked in advance. After nearly half a year of high temperature and sun exposure, many facilities will be aging or malfunction, and must be repaired early to ensure that the insulation facilities can be put into use at any time before winter. At the end of autumn and the beginning of winter, the weather changes drastically. Once the cold current arrives, debugging the equipment is likely to delay. Many vegetable farmers are afraid that the night temperature in the back shed is too high, so they can postpone the shed time or even shed before going to bed at night. It is best not to put it in half. , Affecting the growth of the front vegetables.
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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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