Recently, some vegetable farmers in the southern part of Jitai Town, Shouguang City, and Tanfang Town, Qingzhou City, have discovered that there are some problems in the cultivation of the greenhouse. The pepper has been planted for nearly a month, and the stem stalks of the pepper plant are thin.
This will certainly have a negative impact on the subsequent fruiting. The vegetable farmers also think so. Therefore, after the sharp stalks of thin peppers were found, it was thought that there was a problem with the supply of fertilizer and water, and the management of fertilizers and water was adopted to solve them. Unexpectedly, the sharp pepper plants are known for a long time and the leaves become dark green, but the stems have not grown thick.
Can we say that the thin stem stalks are not the cause of malnutrition? What are the causes of these problems?
The reporter learned from the field survey that the sharp peppers had strong light and high temperatures after planting, but there were still a few vegetable farmers who took less stringent measures to cool the shade, and the thin pepper stalks were weak and the plants were not cooled in the shade. Appeared in the shed. In other words, the vegetable peasants do not take sunshade cooling measures after planting, and the high temperature and strong light are the main reasons for the thin stem stalks because they consume too much.
Asked why they did not adopt shading and cooling, some vegetable farmers said that shading and cooling had been performed in previous years, but the use of shading nets for shading during seedling periods would cause insufficient light, and organic materials produced by the leaves would be less conducive to the cultivation of sharp pepper seedlings. The late fruiting was also affected, so no measures were taken to cool the shade.
The vegetable growers did not set up shade nets. Although the light spots in the sheds were good, the high temperatures in the sheds resulted in excessive nutrient consumption in the sharp pepper plants. During the day, the sharp pepper plants undergo photorespiration in addition to photosynthesis. The light intensity at noon exceeds the light saturation point of the pepper, and the stomata in the leaves will be closed due to lack of water, and the photosynthesis will decline. However, the light breathing of the pepper will not only not Stopped, but will increase, leading to increased nutrient consumption; at night, if the night temperature is high, the respiration of the sharp pepper will be strengthened, will also consume a lot of nutrients made by the leaves, resulting in the stem stalks are not adequate nutrition supply and grow thin .
In view of this situation, it is recommended to use shade nets and other methods to shade from 10:30 to 3:00 pm. When the leaves of the pepper stopped photosynthesis at noon, the photorespiration of the peppers was reduced, and it was also beneficial to reduce the heat storage of the arch and reduce the night temperature. Reducing the consumption of nutrients by the breath, thus promoting the sharp seedlings.
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.
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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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