The cultivation of nectarine in the greenhouse is generally carried out in the middle of December to the middle of January of the next year. The management of the shed after the shed should focus on the following measures.
First, the temperature and humidity control is closed. 1, temperature. Generally, the temperature before the shed is controlled to 0-28 °C; the germination period is 5-28 °C; the flowering period is maintained at 10-15 °C during the day (not more than 20 °C), and the nighttime is not lower than 7 °C; The nuclear period is 5-25 ° C; the fruit expansion period is 10-25 ° C; the fruit coloring period is 15-28 ° C; the harvesting period is 17-30 ° C. 2, humidity. The relative humidity of the air from the shed to the germination period is maintained at about 80%; the flowering period is controlled at 50-60%; the humidity during flowering to maturity is maintained at 60-70%.
Second, timely watering and fertilization. After the shed, the water should be poured once in time to ensure proper temperature and humidity for germination. In combination with watering, per hole of each seedling is drilled and applied with 0.5-1 kg of ternary compound fertilizer. Later, water is poured once in the fruit setting, hard core period and fruit expansion period, and watering and top dressing are combined twice in the hard core period and the fruit expansion period. After the nectarine leaves are unfolded, spray 0.2% of Hexin liquid fertilizer plus 0.1% rare earth plus 0.2% of the agricultural protection No. 1 or No. 3 liquid fertilizer every 10-15 days.
Third, pay attention to the flower and fruit. During the flowering period, artificial pollination or bee pollination is used to increase the fruit setting rate. After 3-4 weeks of flowering, the fruit will be thinned out in time, and the result will be too much, too dense and deformed, and the fruit will be removed as soon as possible. Generally, long fruit branches (30-60 cm) are reserved for 3-5 fruits, middle fruit branches (15-35 cm) for 2-3, and short fruit branches (5-15 cm) for 1-2.
Fourth, we must guard against pests and diseases. The pests and diseases of nectarine in the greenhouse are mainly anthracnose, black spot, aphids and mites. Control method: After the shed, spray the whole plant 1-2 times with 5 waves of stone sulphur mixture; spray 80% of the big m-45 or 70% thiophanate 600-800 times every 10-15 days after the falling flower The liquid is sprayed 3-5 times; when aphids and mites occur, 10% imidacloprid 2000-2500 times solution and 15% darlonone 1500 times solution can be used respectively.
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API Powder is fully defined in ICH Q7A as any substance or mixture of substances intended for use in the manufacture of pharmaceutical products and, when used in pharmaceutical products, as an active ingredient of pharmaceutical products. Such substances have pharmacological activities or other direct effects in the diagnosis, treatment, symptom relief, management or prevention of disease, or can affect the function or structure of the body. The active ingredient of a medicine. Only when an API is processed into a pharmaceutical preparation can it become a medicine for clinical application.
According to its source, apis are divided into chemical synthetic drugs and natural chemical drugs.
Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs. Inorganic synthetic drugs are inorganic compounds (very few are elements), such as aluminum hydroxide and magnesium trisilicate for the treatment of gastric and duodenal ulcer, etc. Organic synthetic drugs are mainly made of basic organic chemical raw materials, through a series of organic chemical reactions and drugs (such as aspirin, chloramphenicol, caffeine, etc.).
Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources. Antibiotics are generally produced by microbial fermentation and belong to the category of biochemistry. In recent years, a variety of semi-synthetic antibiotics are the combination of biosynthesis and chemical synthesis products. Among apis, organic synthetic drugs account for the largest proportion of variety, yield and output value, which is the main pillar of chemical pharmaceutical industry. The quality of the API determines the quality of the preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for the widely used APIS.
Specific API after processing -- pharmaceutical preparations
The term API is used mainly in relation to the finished product. Mainly raw materials obtained by chemical processing means, supply raw materials for the production of finished drugs. For example, cefpirome sulfate for injection is a drug, then cefpirome sulfate is an API
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