1. Rack:
Tomato cultivation should be framed and tied in time. The scaffolding is generally carried out at a seedling height of about 30 cm, after cultivating and weeding. Insert the frame into the place 7 to 10 cm away from the plant, do not touch the root system.
The framing method includes a "human" frame, a fence frame and a "ten" shaped frame.
"People" frame. In the vicinity of the plant, a bamboo raft is inserted obliquely from the inside to the outside, so that the two opposite rows of the two bamboo rafts cross the adult shape, and then connect with a horizontal bamboo raft at the intersection. The bracket is 170 to 200 cm high. The ends of the raft can also be reinforced with a bamboo slanting support. This bracket is stable but has poor ventilation and light transmission.
Fence rack. The bamboo rafts are inserted obliquely on the inner side or the outer side of the plant row, and the two bamboo rafts are separated by about 40 cm, and the horizontal bamboo rafts are appropriately arranged on the top to form a mesh structure fence. Plants and ears are fixed on the fence. This kind of bracket has good ventilation and light transmission, but the windshield is large, and it is easy to cause the whole plant to fall under the wind.
"Ten" shaped frame. Use a 1.7-2.0-meter-long, relatively strong hedge bamboo, insert a erected bamboo along the tomato planting line every 1 meter or so, and then spread a bamboo every 30 to 40 centimeters from the ground 30-40 cm. 5 to 6 layers. This kind of bracket is better for ventilation and light transmission, but it is not stable enough. Tighten the intersections firmly with straw, twine or plastic straps.
2. Tied vines:
Tied vines are tied to the stem of the tomato. When tying the vines, the ears can also be hung on the bamboo rafts to prevent the stems from being broken due to excessive weight. The vines should be divided into several times. Each increase of the plant is 20 to 30 cm, and the vines are tied once, for a total of 4 to 5 times. The stem has an ear, which should be tied to the lower part of the ear, and the vine and the hanging ear are combined.
The vine materials include straw, hemp rope, rag strips, plastic ropes, and bandings. The method of tying the vines is to fix the vine material on the stem of the tomato, and to form an "8" shape knot between the fixed points of the bamboo raft. Tied vines should not be too tight or too loose. In order to prevent the fixed point from moving up and down, the left and right movement range is too large, and the vine material can be used for one more circle at the fixed point of the bamboo pole. When tying vines, do not bundle the flower spikes between the stems and the poles to avoid affecting the development of the ears.
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API Powder (Active Pharmaceutical Ingredient)
Active Pharmaceutical Ingredients refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly.
According to its source,Active Pharmaceutical Ingredients are divided into two categories: synthetic chemical 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 (extremely elements), such as aluminum hydroxide and magnesium trisilicate used to treat gastric and duodenal ulcers; organic synthetic drugs are mainly composed of basic organic chemical raw materials, through a series of organic Drugs made by chemical reactions (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 made by microbial fermentation, which belongs to the category of biochemistry.In recent years, many semisynthetic antibiotics are the combination of biosynthesis and chemosynthesis.Among APIs, organic synthetic drugs account for the largest proportion in variety, yield and output value, which is the main pillar of chemical pharmaceutical industry.The quality of API determines the quality of preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for its widely used API
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